检查下面的代码: class E1 extends Exception{ } class E2 extends E1 { } public class Test{ public static void main(String[] args){ try{ throw new E1(); } // --X-- } } 下列语句,哪些可以放到--X--位置,而且保证编译成功。A.catch(Exception x){ }B.catch(Test x) { }C.catch(E1 x){ }D.catch(E2 x){ }
检查下面的代码: class E1 extends Exception{ } class E2 extends E1 { } public class Test{ public static void main(String[] args){ try{ throw new E1(); } // --X-- } } 下列语句,哪些可以放到--X--位置,而且保证编译成功。
A.catch(Exception x){ }
B.catch(Test x) { }
C.catch(E1 x){ }
D.catch(E2 x){ }
参考答案和解析
catch(Exception x){};catch(El x){}
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