package mail.org;
import java.io.Console;
public class PasswordDemo {
public static void main(String[] args) {
Console console = System.console();
while (true) {
System.out.print("输入姓名:");
String name = console.readLine();
System.out.print("输入密码:");
char[] passwd = console.readPassword();
String password = new String(passwd);
if ("zhnag".equals(name) && "123456".equals(password)) {
System.out.println("huan yin nin !");
break;
} else {
System.out.println("shu ru cuo wu !qing chong xin shu ru !");
}
}
}
}
以下是bug
Exception in thread "main" java.lang.NullPointerException
输入姓名: at mail.org.PasswordDemo.main(PasswordDemo.java:10)