小编wak*_*fus的帖子

我试图从Java 6中的键盘输入文本输入.我是该语言的新手,每当我运行以下代码时,我都会收到此错误:

package test1;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
    boolean quit = false;
    while (!quit){
        Scanner keyIn;
        String c = "x";
        while (c != "y" && c != "n") {
            keyIn = new Scanner(System.in);
            c = keyIn.next();
            keyIn.close();
        }
        if (c == "n")
            quit = true;
    }
 }
}


Exception in thread "main" java.util.NoSuchElementException
at java.util.Scanner.throwFor(Scanner.java:838)
at java.util.Scanner.next(Scanner.java:1347)
at test1.Test.main(Test.java:11)

我错误地使用了next()方法吗？我认为它会等待用户输入,但它看起来不是,并抛出异常说扫描仪中没有任何东西.