在Java编程中，如何使用重载方法处理异常？

此示例显示如何使用重载方法来处理异常。需要在每个方法中使用try catch块。

package com.yiibai;

public class ExceptionWithOverloadedMethods { double method(int i) throws Exception { return i / 0; } boolean method(boolean b) { return !b; } static double method(int x, double y) throws Exception { return x + y; } static double method(double x, double y) { return x + y - 3; } public static void main(String[] args) { ExceptionWithOverloadedMethods mn = new ExceptionWithOverloadedMethods(); try { System.out.println(method(110, 120.0)); System.out.println(method(110.0, 120)); System.out.println(method(110.0, 120.0)); System.out.println(mn.method(110)); } catch (Exception ex) { System.out.println("exception occoure: " + ex); } } } 

上述代码示例将产生以下结果 -

230.0
227.0
227.0
exception occoure: java.lang.ArithmeticException: / by zero

示例-2

以下是在Java中使用重载方法处理异常的另一个示例

package com.yiibai;

class NewClass1 { void msg() throws Exception { System.out.println("this is parent"); } } public class ExceptionWithOverloadedMethods2 extends NewClass1 { ExceptionWithOverloadedMethods2() { } void msg() throws ArithmeticException { System.out.println("This is child"); } public static void main(String args[]) { ExceptionWithOverloadedMethods2 n = new ExceptionWithOverloadedMethods2(); try { n.msg(); } catch (Exception e) { } } } 

上述代码示例将产生以下结果 -

This is child