Java 如何在不使用默认方法的情况下关闭JFrame?
我正在使用NetBeans IDE创建一个框架,默认情况下框架是关闭的。我修改了默认行为,如关闭时退出,关闭时不做任何事。我想手动关闭 如何在不使用默认方法的情况下关闭Java 如何在不使用默认方法的情况下关闭JFrame?,java,swing,jframe,Java,Swing,Jframe,我正在使用NetBeans IDE创建一个框架,默认情况下框架是关闭的。我修改了默认行为,如关闭时退出,关闭时不做任何事。我想手动关闭 如何在不使用默认方法的情况下关闭JFrame 这是我的密码: public class FrameClose extends javax.swing.JFrame { public FrameClose() { initComponents(); } @SuppressWarnings("unchecked")
JFrame
这是我的密码:
public class FrameClose extends javax.swing.JFrame {
public FrameClose() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.DO_NOTHING_ON_CLOSE);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 300, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new FrameClose().setVisible(true);
}
});
}
// Variables declaration - do not modify
// End of variables declaration
}
public类FrameClose扩展了javax.swing.JFrame{
公共框架关闭(){
初始化组件();
}
@抑制警告(“未选中”)
//
私有组件(){
setDefaultCloseOperation(javax.swing.WindowConstants.DO\u NOTHING\u ON\u CLOSE);
javax.swing.GroupLayout=newjavax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0,400,短。最大值)
);
layout.setVerticalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0,300,短。最大值)
);
包装();
}//
公共静态void main(字符串参数[]){
/*设置Nimbus的外观和感觉*/
//
/*如果Nimbus(在JavaSE6中引入)不可用,请使用默认的外观。
*详情请参阅http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
试一试{
for(javax.swing.UIManager.LookAndFeelInfo:javax.swing.UIManager.getInstalledLookAndFeels()){
if(“Nimbus”.equals(info.getName())){
setLookAndFeel(info.getClassName());
打破
}
}
}捕获(ClassNotFoundException ex){
getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}catch(实例化异常){
getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}捕获(非法访问例外){
getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}catch(javax.swing.UnsupportedLookAndFeelException ex){
getLogger(FrameClose.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}
//
/*创建并显示表单*/
invokeLater(new Runnable()){
公开募捐{
新建FrameClose().setVisible(true);
}
});
}
//变量声明-不修改
//变量结束声明
}
可以对帧对象使用dispose()方法,
例如:
JFrame frame = new JFrame();
frame.dispose();
您可以尝试使用WindowListener
addWindowListener(new WindowListener() {
@Override
public void windowActivated(WindowEvent arg0) { }
@Override
public void windowClosed(WindowEvent arg0) { }
@Override
public void windowClosing(WindowEvent arg0) { }
@Override
public void windowDeactivated(WindowEvent arg0) { }
@Override
public void windowDeiconified(WindowEvent arg0) { }
@Override
public void windowIconified(WindowEvent arg0) { }
@Override
public void windowOpened(WindowEvent arg0) { }
});
使用此方法而不是调用setDefaultCloseOperation()
,然后只使用哪种方法最适合您想要做的事情
或者,如果要在代码中关闭框架,请使用
setVisible(false)
隐藏框架或使用dispose()
清除整个框架请参见。您想手动关闭是什么意思?是的,问题一点也不清楚。您希望避免的“默认方法”是什么?“手动关闭”是什么意思?另外,由于您正在学习Swing,我强烈建议您不要使用windows builder实用程序,而是使用Swing教程作为指南手工编写代码,直到您学习该库。请参见。SendWINDOW\u CLOSING
,如图所示。