Java Netbeans Jlabel 隐藏和显示
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Java Netbeans Jlabel Hide and Show
提问by MyCloud
I have a Jframe form and once this form runs i would like some specfeic labels become invisble until the user press on the "Submit button" they become visible.
我有一个 Jframe 表单，一旦这个表单运行，我希望一些特定的标签变得不可见，直到用户按下“提交按钮”它们变得可见。
Assuming that i have 2 JLabels named Label1 and Label2
假设我有 2 个 JLabel，分别命名为 Label1 和 Label2
The idea in my mind would be to go for the constructor of the JFrame class and write
我的想法是寻找 JFrame 类的构造函数并编写
Label1.setVisible(false);
Label2.setVisible(false);
Then at the ActionPerformedfunction of the Submit button
然后在ActionPerformed提交按钮的功能
Label1.setVisible(true);
Label2.setVisible(true);
But this option does not work and netbeans keeps showing several errors, the question is does my idea is not the proper way to do it or i'm just doing it wrong?
但是这个选项不起作用，netbeans 不断显示几个错误，问题是我的想法不是正确的方法还是我只是做错了？
采纳答案by Ahmad Vatani
make sure that you put
确保你把
Label1.setVisible(false);
Label2.setVisible(false);
after the initComponents();method call!
for example if your JFrame name is: NewJFrame you should change constructor with this code:
在initComponents();方法调用之后！例如，如果您的 JFrame 名称是：NewJFrame，您应该使用以下代码更改构造函数：
public NewJFrame() {
initComponents();
Label1.setVisible(false);
Label2.setVisible(false);
}
回答by Stenart
Have you tried typing Label1.setVisible(true);for example? (Notice the ';' mark)
Label1.setVisible(true);例如，您是否尝试过打字？（注意';'标记）
Or check what errors comes up and post it here.
或者检查出现了什么错误并将其张贴在这里。
