java - 异常后继续执行

Question

我有这两个类:

public class TryException {
    int a=0;

    TryException(int c) {
        a = c;
    }

    public boolean operation() //just example
    {
        if(a!=10)
        {
            System.out.println(a);
            return true;
        }else{
            throw new RuntimeException("display something");
        }

    }

}

和主要的:

public class Test {
    static public void main(String args[])
    {
        int val =20;
        TryException ex = new TryException(val);

        try{
            while(ex.operation()){
                ex.a = --val;
            }

        }catch(RuntimeException e)
        {
            System.out.println("try exception");
        }
    }
}

当我运行这个程序时，当它检测到异常时就停止执行。如何在异常发生后继续执行相同的while？

Answer 1

将 try-catch 移到循环内。

 boolean run = true;
 while(run){
    ex.a = --val;
    try{
       run = ex.operation();
    }catch(RuntimeException e){
        System.out.println("try exception");
    }    
 }

您需要决定何时将 run 设置为 false...