应用程序在 netbeans 7.0 中的 java swing 中关闭 Jframe 时退出
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5993244/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Application exits on closing of Jframe in java swing in netbeans 7.0
提问by zoheb
i am actually developing GUI application whwn i run this application a login window comes i have a button on it when after successful login i have MDI application form i have menu in that in menu i have menu items when i click menu items Jframe opens upto here i am haing no problem
我实际上是在开发 GUI 应用程序，当我运行这个应用程序时，会出现一个登录窗口 我有一个按钮，成功登录后我有 MDI 应用程序表单 我在菜单中有菜单 我在单击菜单项时有菜单项 Jframe 在这里打开我没问题
but when i close Jframe form entire application exits
但是当我关闭 Jframe 表单时，整个应用程序退出
LOGIN FORM Code
登录表格代码
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Login().setVisible(true);
}
});
BUTTON CODE
按钮代码
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
NewMDIApplication n = new NewMDIApplication();
n.show();
this.setVisible(false);
}
MDIApplication form code
MDI申请表代码
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
IVITEM i = new IVITEM();---- this is that form that opens inside the MDI appliaction
i.show();
}
回答by MOHAMED FATHEI
in the IVITEM class add this code
在 IVITEM 类中添加此代码
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
and in the main menu in main window add menu item "exit" and in it's action use
并在主窗口的主菜单中添加菜单项“退出”并在其操作中使用
System.exit(0);
this will close all child windows
这将关闭所有子窗口
回答by Hovercraft Full Of Eels
Your login form is behaving as a dialog and so shouldn't be a JFrame at all but rather a dialog window such as a JDialog, and what's more, should be one that is modalto the main application window (which is likely a JFrame). Many don't realize (and I don't know if this includes you or not) that JDialogs can hold complex GUIs, as complex as any held by a JFrame.
您的登录表单表现为一个对话框，因此根本不应该是 JFrame，而是一个对话框窗口，例如 JDialog，而且，应该是主应用程序窗口（可能是 JFrame）的模态窗口. 许多人没有意识到（我不知道这是否包括您）JDialogs 可以保存复杂的 GUI，就像 JFrame 所保存的一样复杂。
回答by Dapeng
in the JFrame properties panel, set the defaultCloseOperation to DISPOSE
在 JFrame 属性面板中，将 defaultCloseOperation 设置为 DISPOSE
