我有一个Scanner,我从控制台得到一周中的一天,然后我想用JOptionPane.showMessageDialog方法显示一天,但它不起作用。public class TestClass {
Scanner scan = new Scanner(System.in);
JOptionPane.showMessageDi
下面将找到方法规范和我为匹配这些方法而编写的方法: * This method prompts the user for a number, verifies that it is between* Do not create an instance of Scanner in this method, pass the reference * @param in The reference to the instance of Scanner
我的意图是用字符串打印所有字符。我想检查一个字符是"q“还是"Q",只需中断循环并结束程序。假设我使用"Hello“作为输入,则输出只能是Exception in thread "main" java.util.NoSuchElementException
at java.base/java.util.<em