异常常见类型处理分析

浅浅的花香味﹌ 2022-08-06 09:10 265阅读 0赞

**package cyb.lxf.staring.test;  
public class TestMyException \{  
public static void main(String\[\] args) \{  
TestMyException.ex5();  
\}  
public static void ex1() \{  
try \{  
int tmp = 1 / 0;  
\} catch (Exception e) \{  
System.out.println("ex occur!");  
\} finally \{  
System.out.println("finally hadle...");  
\}  
/\*\*  
\* ex occur!  
\* finally hadle...  
\*/  
\}  
public static void ex2() \{  
try \{  
int tmp = 1 / 0;  
System.out.println("after ex.");//异常后的语句不会执行  
return ;  
\} catch (Exception e) \{  
System.out.println("ex occur!");  
\} finally \{  
System.out.println("finally hadle...");  
\}  
/\*\*  
\* ex occur!  
\* finally hadle...  
\*/  
\}  
public static void ex3() \{  
try \{  
int tmp = 1 / 0;  
System.out.println("after ex.");//异常后的语句不会执行  
return ;  
\} catch (Exception e) \{  
System.exit(0);  
System.out.println("ex occur!");  
\} finally \{  
System.out.println("finally hadle...");  
\}  
/\*\*  
\* 无输出  
\*   
\*/  
\}  
public static void ex4() \{  
try \{  
int tmp = 1 / 0;  
System.out.println("after ex.");//异常后的语句不会执行  
return ;  
\} catch (Exception e) \{  
System.out.println("ex occur!");  
System.exit(0);//程序非、正常退出，导致finally无法正常处理  
\} finally \{  
System.out.println("finally hadle...");  
\}  
/\*\*  
\* ex occur!  
\*   
\*/  
\}  
public static void ex5() \{  
try \{  
int tmp = 1 / 0;  
System.out.println("after ex.");//异常后的语句不会执行  
return ;  
\} catch (Exception e) \{  
System.out.println("ex occur!");  
return ;//不会影响finally无法正常处理  
\} finally \{  
System.out.println("finally hadle...");  
\}  
/\*\*  
\* ex occur!  
\* finally hadle...  
\*/  
\}  
public static void ex6() \{  
try \{  
int tmp = 1 / 0;  
System.out.println("after ex.");//异常后的语句不会执行  
return ;  
\} catch (Exception e) \{  
System.out.println("ex occur!");  
return ;//不会影响finally无法正常处理  
//System.out.println("ex occur!");//语法不通过，return 后的语句永远不会被执行到。  
\} finally \{  
return ;  
//System.out.println("finally hadle...");//语法不通过，return 后的语句永远不会被执行到。  
\}  
/\*\*  
\* ex occur!  
\* finally hadle...  
\*/  
\}  
//任何单位语句块中，return后边的语句都不能被执行。  
\}**