本文介绍了JOptionPane是或否窗口的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试使用是或否按钮创建消息。然后会出现一个窗口,其中包含某条消息,该消息取决于用户是否单击是或否。
I am trying to create a message with a Yes or No button. Then a window will appear with a certain message that depends on if the user clicked Yes or No.
这是我的代码:
public class test{ public static void main(String[] args){ //default icon, custom title int n = JOptionPane.showConfirmDialog( null, "Would you like green eggs and ham?", "An Inane Question", JOptionPane.YES_NO_OPTION); if(true){ JOptionPane.showMessageDialog(null, "HELLO"); } else { JOptionPane.showMessageDialog(null, "GOODBYE"); } System.exit(0); } }现在无论是否按是打印HELLO或者。当用户选择否时如何让它显示GOODBYE?
Right now it prints HELLO whether or not you press Yes or No. How do I get it to show GOODBYE when the user chooses No?
推荐答案if(true)将永远是真的,它永远不会成为别的。如果你想让它正常工作,你必须这样做:
"if(true)" will always be true and it will never make it to the else. If you want it to work correctly you have to do this:
int reply = JOptionPane.showConfirmDialog(null, message, title, JOptionPane.YES_NO_OPTION); if (reply == JOptionPane.YES_OPTION) { JOptionPane.showMessageDialog(null, "HELLO"); } else { JOptionPane.showMessageDialog(null, "GOODBYE"); System.exit(0); }更多推荐
JOptionPane是或否窗口
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