Java检测字符串

Question

我试图制作一个程序，如果你输入＆＃34;打开＆＃34;它以java控制台结束。

当我输入open时，下面的if语句不会运行。

            if(input=="open") {
                System.out.println("You escaped!!");
                break;
            }

我也试过.equals但它仍然无法正常工作

    if(input.equals("open")) {
        System.out.println("You escaped!!");
        break;
    }

但是，当我打印输出如下所示时，输入打开。这没有任何意义，因为如果输入是打开的，那么上面的if语句应该已经运行。

            else{
                //otherwise check what was written
                System.out.println(input);
            }

这是我的完整代码：

class Password {
    public static void main(String args[]) throws java.io.IOException {
        //holds letters put in
        char letter;

        //holds full line of input
        String input;


        for(;;){
            input="";

            //makes the input equal what was inputed on the line
            for(;;){
                //gets next char
                letter=(char) System.in.read(); //get a char
                //if the line hasn't ended then add that char to input
                if(letter!='\n'){
                    input+=String.valueOf(letter);
                }else{
                    //other wise line has ended so input is finished
                    break;
                }
            }
            //if open was typed in then end the program
            if(input.equals("open")) {
                System.out.println("You escaped!!");
                break;
            }else{
                //otherwise check the input
                System.out.println(input);
            }
        }
    }

}