修复包含计数器的while循环

Question

我试图使用while循环向我的程序添加一个计数器,但还没有能够使它工作.有人可以告诉我我哪里出错了,我让它工作了一点但如果我输入一个正确的值,"错误的"文本仍然会出现,它不会突破循环.

public class Username {
    public static void main (String[]args) {    
        Scanner kb = new Scanner (System.in);
        String [] name = {"barry", "matty", "olly","joey"};
        int j = 0;

        while (j < 3) {
            System.out.println("Enter your name");
            String name1 = kb.nextLine();
            boolean b = true;
            for (int i = 0; i < name.length; i++) {
                if (name[i].equals(name1)) {
                    System.out.println("you are verified you may use the lift");
                    break; // To stop loop checking names
                }
            }
            System.out.println("wrong");
            j++;        
        }
    }
}

Answer 1

外部循环,while用于允许的尝试.你需要一种额外的方式来发出信号来断开,因为break你的声明只是从for循环中断开.一种方法是使用booleanidicator:

boolean found = false;
int attempts = 0;
while (!found && attempts < 3) {
    System.out.println("Enter your name");
    String name1 = kb.nextLine();

    for (int i = 0; i < name.length; i++) {
        if (name[i].equals(name1)) {
            System.out.println("you are verified you may use the lift");
            found = true;
            break;// to stop loop checking names
        }
    }
    if (!found) {
        System.out.println("wrong");
    }
    ++attempts;
}