java 关键字、标识符、自动类型转换

Myth丶恋晨 2023-10-12 09:30 3阅读 0赞

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自动类型转换，将类型范围小的转到类型范围大的变量  
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package com.ithema.spedkey;
    
    public class demo4 {
        
        public static void main(String[] args) {
        
            // 目标：理解自动类型转换
            byte a = 20;
            int b = a;
            System.out.println(a);
            System.out.println(b);
    
            int age = 12;
            double db = age;
            System.out.println(age);
            System.out.println(db);
    
            char ch = 'a';
            int code = ch;
            System.out.println(ch);
            System.out.println(code);
        }
    }

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