异常捕获的测试

异常处理 :

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定义几个异常 :

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public class ExceptionA extends Exception

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public class ExceptionB extends ExceptionA

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测试代码:?

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public class ExceptionTest {public static void main(String[] args){try{throw new ExceptionA();}catch (ExceptionB e) {// TODO: handle exceptionSystem.out.println("ExceptionB");}catch (ExceptionA e) {// TODO: handle exceptionSystem.out.println("ExceptionA");}}}

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运行结果:

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ExceptionB

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public class ExceptionTest {public static void main(String[] args){try{throw new ExceptionA();}catch (ExceptionA e) {// TODO: handle exceptionSystem.out.println("ExceptionB");}catch (ExceptionB e) {        -----------------报错// TODO: handle exceptionSystem.out.println("ExceptionA");}}}

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