java - 如果条件为真则停止代码

Question

问题出在while循环上，有注释

BufferedReader user = new BufferedReader(new FileReader(
        "C:\\Users\\Ionut\\workspace\\tBot\\persoane.txt"));

String line;
while ((line = user.readLine()) != null) {
    if (line.toLowerCase().contains(nume.toLowerCase())) {
        System.out.println("Ce mai faci " + nume + "?");
        ceva = scanIn.nextLine(); //here i want to stop if the condition is true, but it will show the message and go ahead and execute the rest of the code
    }
}

Answer 1

基本上有两种常见的解决方案:

1-使用break:

while ((line = user.readLine()) != null) {
    if (line.toLowerCase().contains(nume.toLowerCase())) {
        System.out.println("Ce mai faci " + nume + "?");
        ceva = scanIn.nextLine(); 
        break;  // exists the closest loop
    }
}

2- 使用 boolean 标志:

boolean stop = false;
while (!stop && (line = user.readLine()) != null) {
    if (line.toLowerCase().contains(nume.toLowerCase())) {
        System.out.println("Ce mai faci " + nume + "?");
        ceva = scanIn.nextLine();
        stop = true;
    }
}