如何摆脱这样的无限循环[重复]

如何摆脱这个无休止的循环

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main1 {
    static String s;
    public static void main(String[] args) {
        System.out.println("Input password:");
        for (;;){
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            try {
                s=br.readLine();
            }catch (Exception e){}
            System.out.println("error");
            if (s=="stop")
                break;
        }
        System.out.println("exit");
    }
}