divbyzeroexception.java

包中给出了关于除零异常的程序

class DivExceptionTest{
    public static void main(String args[]){
    	double d1=0.0;
    	double d2=0.0;
    	try{
    	   d1=new DivExceptionTest().div(10,2);
    	   d2=new DivExceptionTest().div(10,0);
    	}
    	catch(MyException e){
    		System.out.println(e);
    	}
    	System.out.println(d1);
    	System.out.println(d2);
    }
    double div(double a,double b) throws MyException{
    	if (b==0)
    		throw new MyException();
    	else
    		return a/b;
    }
}
class MyException extends Exception{
    public String toString(){
	return "除数不能为零!";
    }
}