Enthuware

akassem wrote:I understand that the while loop is an infinite loop. But since it calls getX() each time, shouldn't this lead to a StackOverflowError eventually?

Note that looper() declares an automatic variable x, which shadows the instance variable x. So when x = m; is executed, it is the local variable x that is changed not the instance field x. So getX() never returns 0. If you remove int x = 0; from looper(), it will print 0 and end.

admin wrote:Did you read the explanation? It explains exactly what you are asking.

Note that looper() declares an automatic variable x, which shadows the instance variable x. So when x = m; is executed, it is the local variable x that is changed not the instance field x. So getX() never returns 0. If you remove int x = 0; from looper(), it will print 0 and end.

If you remove the automatic variable x, then there will be no shadowing of the instance field x and x = m will affect the instance field x.

Also, please read the post by "crux terminatus" above.

public class TestClass{
        int x = 5;
        int getX(){ return x; }

        public static void main(String args[]) throws Exception{
            TestClass tc = new TestClass();
            tc.looper();
            System.out.println(tc.x);
        }
        public void looper(){
            int x = 0;
            while( (this.x = getX()) != 0 ){
                for(int m = 10; m>=0; m--){
                    [b]this.[/b]x = m;
                }
            }
       }     
}

admin wrote:What happened when you tried it out?

Javier wrote:Hi!!

I would like to know if an infinite loop generate some kind of exception or error, is there no problem with the memory or the hard disk?