用Java实现JVM第八章《数组和字符串》

爱被打了一巴掌 2023-01-07 12:24 77阅读 0赞

## 案例介绍 ##

本章主要介绍如何实现让虚拟机处理数组和字符串，在虚拟机功能增强后，我们可以执行数组类型计算和输出字符串。本章需要新增实现数组指令；newarray、anewarray、arraylength、aload、astore、multianewarray、ldc，同时需要需要开发字符串池方法等。

> 数组在Java虚拟机中是给比较特殊的概念，主要有以下原因；

> 首先，数组类和普通的类是不同的。普通的类从class文件中加载，但是数组类由Java虚拟机在运行时生成。数组的类名是左括号(\[)+数组元素的类型描述符；数组的类型描述符就是类名本身。例如，int\[\]的类名是\[I，int\[\]\[\]的类名是\[\[I，Object\[\]的类名是\[Ljava/lang/Object;，String\[\]\[\]的类名是\[\[java/lang/String;，等等。

> 其次，创建数组的方式和创建普通对象的方式不同。普通对象new指令创建，然后由构造函数初始化。基本类型数组由newarray指令创建；引用类型数组由anewarray指令创建；另外还有一个专门的mulitianewarray指令用于创建多维数组。

> 最后，很显然，数组和普通对象存在的数据也是不同的。普通对象中存放的是实例变量，通过putfield和getfield指令存取。数组对象中存放的则是数组元素，通过aload和astore系列指令按索引存取。其中可以是a、b、c、d、f、i、l或者s，分别用于存取引用、byte、char、double、float、int、long或者shore类型的数组。另外，还有一个arraylength指令，用于获取数组长度。

## 环境准备 ##

jdk 1.8.0  
IntelliJ IDEA Community Edition 2018.3.1 x64

## 配置信息 ##

调试配置  
配置位置：Run/Debug Configurations -> program arguments  
配置内容（执行数组计算）：-Xjre “C:\\Program Files\\Java\\jdk1.8.0\_161\\jre” E:\\itstack\\git\\istack-demo\\itstack-demo-jvm\\itstack-demo-jvm-08\\target\\test-classes\\org\\itstack\\demo\\test\\BubbleSortTest  
配置内容（字符串的输出）：-Xjre “C:\\Program Files\\Java\\jdk1.8.0\_161\\jre” E:\\itstack\\git\\istack-demo\\itstack-demo-jvm\\itstack-demo-jvm-08\\target\\test-classes\\org\\itstack\\demo\\test\\HelloWorld -verbose true -args 你好，java版虚拟机v1.0，欢迎你的到来。

## 代码示例 ##

itstack-demo-jvm-08
    ├── pom.xml
    └── src
        └── main
        │    └── java
        │        └── org.itstack.demo.jvm
        │             ├── classfile
        │             │   ├── attributes   {BootstrapMethods/Code/ConstantValue...}
        │             │   ├── constantpool {CONSTANT_TAG_CLASS/CONSTANT_TAG_FIELDREF/CONSTANT_TAG_METHODREF...}
        │             │   ├── ClassFile.java
        │             │   ├── ClassReader.java
        │             │   └── MemberInfo.java   
        │             ├── classpath
        │             │   ├── impl
        │             │   │   ├── CompositeEntry.java
        │             │   │   ├── DirEntry.java 
        │             │   │   ├── WildcardEntry.java 
        │             │   │   └── ZipEntry.java    
        │             │   ├── Classpath.java
        │             │   └── Entry.java   
        │             ├── classpath
        │             │   ├── base
        │             │   │   ├── BytecodeReader.java
        │             │   │   ├── ClassInitLogic.java
        │             │   │   ├── Instruction.java
        │             │   │   ├── InstructionBranch.java
        │             │   │   ├── InstructionIndex8.java
        │             │   │   ├── InstructionIndex16.java
        │             │   │   ├── InstructionNoOperands.java	
        │             │   │   └── MethodInvokeLogic.java
        │             │   ├── comparisons
        │             │   ├── constants
        │             │   ├── control
        │             │   ├── conversions
        │             │   ├── extended
        │             │   ├── loads
        │             │   ├── math
        │             │   ├── references
        │             │   │   ├── ANEW_ARRAY.java
        │             │   │   ├── ARRAY_LENGTH.java
        │             │   │   ├── CHECK_CAST.java
        │             │   │   ├── GET_FIELD.java
        │             │   │   ├── GET_STATIC.java
        │             │   │   ├── INSTANCE_OF.java
        │             │   │   ├── INVOKE_INTERFACE.java
        │             │   │   ├── INVOKE_SPECIAL.java
        │             │   │   ├── INVOKE_STATIC.java
        │             │   │   ├── INVOKE_VIRTUAL.java
        │             │   │   ├── MULTI_ANEW_ARRAY.java
        │             │   │   ├── NEW.java
        │             │   │   ├── NEW_ARRAY.java
        │             │   │   ├── PUT_FIELD.java
        │             │   │   └── PUT_STATIC.java
        │             │   ├── stack
        │             │   ├── store
        │             │   │   └── xastore
        │             │   │       ├── AASTORE.java	
        │             │   │       ├── BASTORE.java	
        │             │   │       ├── CASTORE.java	
        │             │   │       ├── DASTORE.java
        │             │   │       ├── FASTORE.java
        │             │   │       ├── IASTORE.java
        │             │   │       ├── LASTORE.java	
        │             │   │       └── SASTORE.java		
        │             │   └── Factory   
        │             ├── rtda
        │             │   ├── heap
        │             │   │   ├── constantpool
        │             │   │   ├── methodarea
        │             │   │   │   ├── Class.java    
        │             │   │   │   ├── ClassMember.java  
        │             │   │   │   ├── Field.java    
        │             │   │   │   ├── Method.java 
        │             │   │   │   ├── MethodDescriptor.java 
        │             │   │   │   ├── MethodDescriptorParser.java 
        │             │   │   │   ├── MethodLookup.java 	
        │             │   │   │   ├── Object.java   
        │             │   │   │   ├── Slots.java   
        │             │   │   │   └── StringPool.java	
        │             │   │   └── ClassLoader.java  
        │             │   ├── Frame.java
        │             │   ├── JvmStack.java
        │             │   ├── LocalVars.java
        │             │   ├── OperandStack.java
        │             │   ├── Slot.java 
        │             │   └── Thread.java
        │             ├── Cmd.java
        │             ├── Interpret.java    
        │             └── Main.java
        └── test
             └── java
                 └── org.itstack.demo.test
    			     ├── BubbleSortTest.java
                     └── HelloWorld.java

代码片段

ANEW\_ARRAY.java

package org.itstack.demo.jvm.instructions.references;
    
    import org.itstack.demo.jvm.instructions.base.InstructionIndex16;
    import org.itstack.demo.jvm.rtda.Frame;
    import org.itstack.demo.jvm.rtda.OperandStack;
    import org.itstack.demo.jvm.rtda.heap.constantpool.ClassRef;
    import org.itstack.demo.jvm.rtda.heap.constantpool.RunTimeConstantPool;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Class;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Object;
    
    /**
     * http://www.itstack.org
     * create by fuzhengwei on 2019/4/29
     * create new array of reference
     */
    public class ANEW_ARRAY extends InstructionIndex16 {
    
        @Override
        public void execute(Frame frame) {
            
            RunTimeConstantPool runTimeConstantPool = frame.method().clazz().constantPool();
            ClassRef classRef = (ClassRef) runTimeConstantPool.getConstants(this.idx);
            Class componentClass = classRef.resolvedClass();
    
            OperandStack stack = frame.operandStack();
            int count = stack.popInt();
            if (count < 0) {
                throw new NegativeArraySizeException();
            }
    
            Class arrClass = componentClass.arrayClass();
            Object arr = arrClass.newArray(count);
            stack.pushRef(arr);
    
        }
    
    }

ARRAY\_LENGTH.java

package org.itstack.demo.jvm.instructions.references;
    
    import org.itstack.demo.jvm.instructions.base.InstructionNoOperands;
    import org.itstack.demo.jvm.rtda.Frame;
    import org.itstack.demo.jvm.rtda.OperandStack;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Object;
    
    /**
     * http://www.itstack.org
     * create by fuzhengwei on 2019/4/29
     * get length of array
     */
    public class ARRAY_LENGTH extends InstructionNoOperands {
    
        @Override
        public void execute(Frame frame) {
    
            OperandStack stack = frame.operandStack();
            Object arrRef = stack.popRef();
            if (null == arrRef){
                throw new NullPointerException();
            }
    
            int arrLen = arrRef.arrayLength();
            stack.pushInt(arrLen);
        }
    
    }

NEW\_ARRAY.java

package org.itstack.demo.jvm.instructions.references;
    
    import org.itstack.demo.jvm.instructions.base.BytecodeReader;
    import org.itstack.demo.jvm.instructions.base.Instruction;
    import org.itstack.demo.jvm.rtda.Frame;
    import org.itstack.demo.jvm.rtda.OperandStack;
    import org.itstack.demo.jvm.rtda.heap.ClassLoader;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Class;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Object;
    
    /**
     * http://www.itstack.org
     * create by fuzhengwei on 2019/4/29
     */
    public class NEW_ARRAY implements Instruction {
    
        private byte atype;
    
        @Override
        public void fetchOperands(BytecodeReader reader) {
            this.atype = reader.readByte();
        }
    
        @Override
        public void execute(Frame frame) {
            OperandStack stack = frame.operandStack();
            int count = stack.popInt();
            if (count < 0) {
                throw new NegativeArraySizeException();
            }
    
            ClassLoader classLoader = frame.method().clazz().loader();
            Class arrClass = getPrimitiveArrayClass(classLoader, this.atype);
            Object arr = arrClass.newArray(count);
            stack.pushRef(arr);
    
        }
    
        private Class getPrimitiveArrayClass(ClassLoader loader, byte atype){
            switch (atype) {
                case ArrayType.AT_BOOLEAN:
                    return loader.loadClass("[Z");
                case ArrayType.AT_BYTE:
                    return loader.loadClass("[B");
                case ArrayType.AT_CHAR:
                    return loader.loadClass("[C");
                case ArrayType.AT_SHORT:
                    return loader.loadClass("[S");
                case ArrayType.AT_INT:
                    return loader.loadClass("[I");
                case ArrayType.AT_LONG:
                    return loader.loadClass("[J");
                case ArrayType.AT_FLOAT:
                    return loader.loadClass("[F");
                case ArrayType.AT_DOUBLE:
                    return loader.loadClass("[D");
                default:
                    throw new RuntimeException("Invalid atype!");
            }
        }
    
        static class ArrayType {
            static final byte AT_BOOLEAN = 4;
            static final byte AT_CHAR = 5;
            static final byte AT_FLOAT = 6;
            static final byte AT_DOUBLE = 7;
            static final byte AT_BYTE = 8;
            static final byte AT_SHORT = 9;
            static final byte AT_INT = 10;
            static final byte AT_LONG = 11;
        }
    
    }

IASTORE.java

package org.itstack.demo.jvm.instructions.stores.xastore;
    
    import org.itstack.demo.jvm.instructions.base.InstructionNoOperands;
    import org.itstack.demo.jvm.rtda.Frame;
    import org.itstack.demo.jvm.rtda.OperandStack;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Object;
    
    /**
     * http://www.itstack.org
     * create by fuzhengwei on 2019/4/29
     */
    public class IASTORE extends InstructionNoOperands {
    
        @Override
        public void execute(Frame frame) {
            OperandStack stack = frame.operandStack();
            int val = stack.popInt();
            int idx = stack.popInt();
            Object arrRef = stack.popRef();
    
            checkNotNull(arrRef);
            int[] ints = arrRef.ints();
            checkIndex(ints.length, idx);
            ints[idx] = val;
    
        }
    
    }

StringPool.java

package org.itstack.demo.jvm.rtda.heap.methodarea;
    
    import org.itstack.demo.jvm.rtda.heap.ClassLoader;
    
    import java.util.HashMap;
    import java.util.Map;
    
    /**
     * http://www.itstack.org
     * create by fuzhengwei on 2019/4/29
     */
    public class StringPool {
    
        private static Map<String, Object> internedStrs = new HashMap<>();
    
        public static Object jString(ClassLoader loader, String goStr) {
            Object internedStr = internedStrs.get(goStr);
            if (null != internedStr) return internedStr;
    
            char[] chars = goStr.toCharArray();
            Object jChars = new Object(loader.loadClass("[C"), chars);
            
            Object jStr = loader.loadClass("java/lang/String").newObject();
            jStr.setRefVal("value", "[C", jChars);
    
            internedStrs.put(goStr, jStr);
            return jStr;
        }
    
        public static String goString(Object jStr) {
            Object charArr = jStr.getRefVar("value", "[C");
            return new String(charArr.chars());
        }
    
    }

Interpret.java

package org.itstack.demo.jvm;
    
    import com.alibaba.fastjson.JSON;
    import org.itstack.demo.jvm.instructions.Factory;
    import org.itstack.demo.jvm.instructions.base.BytecodeReader;
    import org.itstack.demo.jvm.instructions.base.Instruction;
    import org.itstack.demo.jvm.rtda.Frame;
    import org.itstack.demo.jvm.rtda.Thread;
    import org.itstack.demo.jvm.rtda.heap.ClassLoader;
    import org.itstack.demo.jvm.rtda.heap.methodarea.*;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Class;
    import org.itstack.demo.jvm.rtda.heap.methodarea.Object;
    
    
    //指令集解释器
    class Interpret {
    
        Interpret(Method method, boolean logInst, String args) {
            Thread thread = new Thread();
            Frame frame = thread.newFrame(method);
            thread.pushFrame(frame);
    
            if (null != args){
                Object jArgs = createArgsArray(method.clazz().loader(), args.split(" "));
                frame.localVars().setRef(0, jArgs);
            }
    
            loop(thread, logInst);
        }
    
        private Object createArgsArray(ClassLoader loader, String[] args) {
            Class stringClass = loader.loadClass("java/lang/String");
            Object argsArr = stringClass.arrayClass().newArray(args.length);
            Object[] jArgs = argsArr.refs();
            for (int i = 0; i < jArgs.length; i++) {
                jArgs[i] = StringPool.jString(loader, args[i]);
            }
            return argsArr;
        }
    
        private void loop(Thread thread, boolean logInst) {
            BytecodeReader reader = new BytecodeReader();
            while (true) {
                Frame frame = thread.currentFrame();
                int pc = frame.nextPC();
                thread.setPC(pc);
    
                reader.reset(frame.method().code, pc);
                byte opcode = reader.readByte();
                Instruction inst = Factory.newInstruction(opcode);
                if (null == inst) {
                    System.out.println("Unsupported opcode " + byteToHexString(new byte[]{opcode}));
                    break;
                }
                inst.fetchOperands(reader);
                frame.setNextPC(reader.pc());
    
                if (logInst) {
                    logInstruction(frame, inst, opcode);
                }
    
                //exec
                inst.execute(frame);
    
                if (thread.isStackEmpty()) {
                    break;
                }
            }
        }
    
        private static void logInstruction(Frame frame, Instruction inst, byte opcode) {
            Method method = frame.method();
            String className = method.clazz().name();
            String methodName = method.name();
            String outStr = (className + "." + methodName + "() \t") +
                    "寄存器(指令)：" + byteToHexString(new byte[]{opcode}) + " -> " + inst.getClass().getSimpleName() + " => 局部变量表：" + JSON.toJSONString(frame.operandStack().getSlots()) + " 操作数栈：" + JSON.toJSONString(frame.operandStack().getSlots());
            System.out.println(outStr);
        }
    
        private static String byteToHexString(byte[] codes) {
            StringBuilder sb = new StringBuilder();
            sb.append("0x");
            for (byte b : codes) {
                int value = b & 0xFF;
                String strHex = Integer.toHexString(value);
                if (strHex.length() < 2) {
                    strHex = "0" + strHex;
                }
                sb.append(strHex);
            }
            return sb.toString();
        }
    
    }
    BubbleSortTest.java
    
    package org.itstack.demo.test;
    
    /**
     * -Xjre "C:\Program Files\Java\jdk1.8.0_161\jre" E:\itstack\git\istack-demo\itstack-demo-jvm\itstack-demo-jvm-08\target\test-classes\org\itstack\demo\test\BubbleSortTest -verbose true
     */
    public class BubbleSortTest {
        
        public static void main(String[] args) {
            int[] arr = {
                22, 84, 77, 11, 95,  9, 78, 56, 
                36, 97, 65, 36, 10, 24 ,92, 48
            };
    
            //printArray(arr);
            bubbleSort(arr);
            //System.out.println(123456789);
            printArray(arr);
        }
        
        private static void bubbleSort(int[] arr) {
            boolean swapped = true;
            int j = 0;
            int tmp;
            while (swapped) {
                swapped = false;
                j++;
                for (int i = 0; i < arr.length - j; i++) {
                    if (arr[i] > arr[i + 1]) {
                        tmp = arr[i];
                        arr[i] = arr[i + 1];
                        arr[i + 1] = tmp;
                        swapped = true;
                    }
                }
            }
        }
        
        private static void printArray(int[] arr) {
            for (int i : arr) {
                System.out.println(i);
            }
        }
        
    }

HelloWorld.java

package org.itstack.demo.test;
    
    /**
     * -Xjre "C:\Program Files\Java\jdk1.8.0_161\jre" E:\itstack\git\istack-demo\itstack-demo-jvm\itstack-demo-jvm-08\target\test-classes\org\itstack\demo\test\HelloWorld -verbose true -args 你好，java版虚拟机v1.0，欢迎你的到来。
     */
    public class HelloWorld {
    
        public static void main(String[] args) {
            for (String str : args) {
                System.out.println(str);
            }
        }
    
    }

测试结果一；执行数组

-Xjre "C:\Program Files\Java\jdk1.8.0_161\jre" E:\itstack\git\istack-demo\itstack-demo-jvm\itstack-demo-jvm-08\target\test-classes\org\itstack\demo\test\BubbleSortTest -verbose true
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":0},{"num":0},{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0},{"num":0},{"num":0}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0xbc -> NEW_ARRAY => 局部变量表：[{"num":16},{"num":0},{"num":0},{"num":0}] 操作数栈：[{"num":16},{"num":0},{"num":0},{"num":0}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":0},{"num":0},{"num":0}] 操作数栈：[{"num":16,"ref":{}},{"num":0},{"num":0},{"num":0}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x03 -> ICONST_0 => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":0}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":0}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":0}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":0}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":22}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":22}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":0},{"num":22}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":0},{"num":22}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x04 -> ICONST_1 => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":22}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":0},{"num":22}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":1},{"num":22}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":1},{"num":22}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":1},{"num":84}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":1},{"num":84}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":1},{"num":84}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":1},{"num":84}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x05 -> ICONST_2 => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":1},{"num":84}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":1},{"num":84}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":2},{"num":84}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":2},{"num":84}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":2},{"num":77}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":2},{"num":77}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":2},{"num":77}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":2},{"num":77}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x06 -> ICONST_3 => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":2},{"num":77}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":2},{"num":77}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":3},{"num":77}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":3},{"num":77}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":3},{"num":11}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":3},{"num":11}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":3},{"num":11}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":3},{"num":11}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x07 -> ICONST_4 => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":3},{"num":11}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":3},{"num":11}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":4},{"num":11}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":4},{"num":11}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":4},{"num":95}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":4},{"num":95}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":4},{"num":95}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":4},{"num":95}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x08 -> ICONST_5 => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":4},{"num":95}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":4},{"num":95}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":5},{"num":95}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":5},{"num":95}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":5},{"num":9}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":5},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":5},{"num":9}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":5},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":5},{"num":9}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":5},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":6},{"num":9}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":6},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":6},{"num":78}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":6},{"num":78}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":6},{"num":78}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":6},{"num":78}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":6},{"num":78}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":6},{"num":78}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":7},{"num":78}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":7},{"num":78}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":7},{"num":56}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":7},{"num":56}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":7},{"num":56}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":7},{"num":56}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":7},{"num":56}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":7},{"num":56}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":8},{"num":56}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":8},{"num":56}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":8},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":8},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":8},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":8},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":8},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":8},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":9},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":9},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":9},{"num":97}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":9},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":9},{"num":97}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":9},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":9},{"num":97}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":9},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":10},{"num":97}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":10},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":10},{"num":65}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":10},{"num":65}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":10},{"num":65}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":10},{"num":65}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":10},{"num":65}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":10},{"num":65}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":11},{"num":65}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":11},{"num":65}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":11},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":11},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":11},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":11},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":11},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":11},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":12},{"num":36}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":12},{"num":36}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":12},{"num":10}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":12},{"num":10}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":12},{"num":10}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":12},{"num":10}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":12},{"num":10}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":12},{"num":10}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":13},{"num":10}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":13},{"num":10}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":13},{"num":24}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":13},{"num":24}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":13},{"num":24}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":13},{"num":24}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":13},{"num":24}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":13},{"num":24}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":14},{"num":24}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":14},{"num":24}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":14},{"num":92}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":14},{"num":92}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x59 -> DUP => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":14},{"num":92}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":14},{"num":92}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":14},{"num":92}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":14},{"num":92}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x10 -> BIPUSH => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":15},{"num":92}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":15},{"num":92}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4f -> IASTORE => 局部变量表：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":15},{"num":48}] 操作数栈：[{"num":16,"ref":{}},{"num":16,"ref":{"$ref":"$[0].ref"}},{"num":15},{"num":48}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x4c -> ASTORE_1 => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":15},{"num":48}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":15},{"num":48}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0x2b -> ALOAD_1 => 局部变量表：[{"num":16},{"num":16},{"num":15},{"num":48}] 操作数栈：[{"num":16},{"num":16},{"num":15},{"num":48}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0xb8 -> INVOKE_STATIC => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":15},{"num":48}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":15},{"num":48}]
    java/lang/Object.<clinit>() 	寄存器(指令)：0xb8 -> INVOKE_STATIC => 局部变量表：null 操作数栈：null
    java/lang/Object.<clinit>() 	寄存器(指令)：0xb1 -> RETURN => 局部变量表：null 操作数栈：null
    ... ...
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xb2 -> GET_STATIC => 局部变量表：[{"num":9},{"num":0}] 操作数栈：[{"num":9},{"num":0}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x15 -> ILOAD => 局部变量表：[{"num":9},{"num":0}] 操作数栈：[{"num":9},{"num":0}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xb6 -> INVOKE_VIRTUAL => 局部变量表：[{"num":9},{"num":9}] 操作数栈：[{"num":9},{"num":9}]
    9
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x84 -> IINC => 局部变量表：[{"num":9},{"num":9}] 操作数栈：[{"num":9},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xa7 -> GOTO => 局部变量表：[{"num":9},{"num":9}] 操作数栈：[{"num":9},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x1d -> ILOAD_3 => 局部变量表：[{"num":9},{"num":9}] 操作数栈：[{"num":9},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x1c -> ILOAD_2 => 局部变量表：[{"num":1},{"num":9}] 操作数栈：[{"num":1},{"num":9}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xa2 -> IF_ICMPGE => 局部变量表：[{"num":1},{"num":16}] 操作数栈：[{"num":1},{"num":16}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x2b -> ALOAD_1 => 局部变量表：[{"num":1},{"num":16}] 操作数栈：[{"num":1},{"num":16}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x1d -> ILOAD_3 => 局部变量表：[{"num":1,"ref":{}},{"num":16}] 操作数栈：[{"num":1,"ref":{}},{"num":16}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x2e -> IALOAD => 局部变量表：[{"num":1,"ref":{}},{"num":1}] 操作数栈：[{"num":1,"ref":{}},{"num":1}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x36 -> ISTORE => 局部变量表：[{"num":10},{"num":1}] 操作数栈：[{"num":10},{"num":1}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xb2 -> GET_STATIC => 局部变量表：[{"num":10},{"num":1}] 操作数栈：[{"num":10},{"num":1}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x15 -> ILOAD => 局部变量表：[{"num":10},{"num":1}] 操作数栈：[{"num":10},{"num":1}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xb6 -> INVOKE_VIRTUAL => 局部变量表：[{"num":10},{"num":10}] 操作数栈：[{"num":10},{"num":10}]
    10
    11
    22
    24
    36
    36
    48
    56
    65
    77
    78
    84
    92
    95
    97
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x84 -> IINC => 局部变量表：[{"num":97},{"num":97}] 操作数栈：[{"num":97},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xa7 -> GOTO => 局部变量表：[{"num":97},{"num":97}] 操作数栈：[{"num":97},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x1d -> ILOAD_3 => 局部变量表：[{"num":97},{"num":97}] 操作数栈：[{"num":97},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0x1c -> ILOAD_2 => 局部变量表：[{"num":16},{"num":97}] 操作数栈：[{"num":16},{"num":97}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xa2 -> IF_ICMPGE => 局部变量表：[{"num":16},{"num":16}] 操作数栈：[{"num":16},{"num":16}]
    org/itstack/demo/test/BubbleSortTest.printArray() 	寄存器(指令)：0xb1 -> RETURN => 局部变量表：[{"num":16},{"num":16}] 操作数栈：[{"num":16},{"num":16}]
    org/itstack/demo/test/BubbleSortTest.main() 	寄存器(指令)：0xb1 -> RETURN => 局部变量表：[{"num":16,"ref":{}},{"num":16},{"num":15},{"num":48}] 操作数栈：[{"num":16,"ref":{}},{"num":16},{"num":15},{"num":48}]
    
    Process finished with exit code 0

测试结果二；输出字符

org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x2a -> ALOAD_0 => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x4c -> ASTORE_1 => 局部变量表：[{"num":0,"ref":{}},{"num":0}] 操作数栈：[{"num":0,"ref":{}},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x2b -> ALOAD_1 => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xbe -> ARRAY_LENGTH => 局部变量表：[{"num":0,"ref":{}},{"num":0}] 操作数栈：[{"num":0,"ref":{}},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x3d -> ISTORE_2 => 局部变量表：[{"num":1},{"num":0}] 操作数栈：[{"num":1},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x03 -> ICONST_0 => 局部变量表：[{"num":1},{"num":0}] 操作数栈：[{"num":1},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x3e -> ISTORE_3 => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x1d -> ILOAD_3 => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x1c -> ILOAD_2 => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xa2 -> IF_ICMPGE => 局部变量表：[{"num":0},{"num":1}] 操作数栈：[{"num":0},{"num":1}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x2b -> ALOAD_1 => 局部变量表：[{"num":0},{"num":1}] 操作数栈：[{"num":0},{"num":1}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x1d -> ILOAD_3 => 局部变量表：[{"num":0,"ref":{}},{"num":1}] 操作数栈：[{"num":0,"ref":{}},{"num":1}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x32 -> AALOAD => 局部变量表：[{"num":0,"ref":{}},{"num":0}] 操作数栈：[{"num":0,"ref":{}},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x3a -> ASTORE => 局部变量表：[{"num":0,"ref":{}},{"num":0}] 操作数栈：[{"num":0,"ref":{}},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xb2 -> GET_STATIC => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    java/lang/Object.<clinit>() 	寄存器(指令)：0xb8 -> INVOKE_STATIC => 局部变量表：null 操作数栈：null
    java/lang/Object.<clinit>() 	寄存器(指令)：0xb1 -> RETURN => 局部变量表：null 操作数栈：null
    java/lang/System.<clinit>() 	寄存器(指令)：0xb8 -> INVOKE_STATIC => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0x01 -> ACONST_NULL => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0xb3 -> PUT_STATIC => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0x01 -> ACONST_NULL => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0xb3 -> PUT_STATIC => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0x01 -> ACONST_NULL => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0xb3 -> PUT_STATIC => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0x01 -> ACONST_NULL => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0xb3 -> PUT_STATIC => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0x01 -> ACONST_NULL => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0xb3 -> PUT_STATIC => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    java/lang/System.<clinit>() 	寄存器(指令)：0xb1 -> RETURN => 局部变量表：[{"num":0}] 操作数栈：[{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xb2 -> GET_STATIC => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x19 -> ALOAD => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xb6 -> INVOKE_VIRTUAL => 局部变量表：[{"num":0},{"num":0,"ref":{}}] 操作数栈：[{"num":0},{"num":0,"ref":{}}]
    
    你好，java版虚拟机v1.0，欢迎你的到来。
    
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x84 -> IINC => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xa7 -> GOTO => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x1d -> ILOAD_3 => 局部变量表：[{"num":0},{"num":0}] 操作数栈：[{"num":0},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0x1c -> ILOAD_2 => 局部变量表：[{"num":1},{"num":0}] 操作数栈：[{"num":1},{"num":0}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xa2 -> IF_ICMPGE => 局部变量表：[{"num":1},{"num":1}] 操作数栈：[{"num":1},{"num":1}]
    org/itstack/demo/test/HelloWorld.main() 	寄存器(指令)：0xb1 -> RETURN => 局部变量表：[{"num":1},{"num":1}] 操作数栈：[{"num":1},{"num":1}]