Java 无法从JFrame打开JPanel
我想做的是,在netbeans中,我有一个大型机类扩展了JFrame。 因为我有一个按钮,在该按钮的操作上,我想打开我的Panel类ExtendesJPanel 我该怎么办 MainFrame.java:Java 无法从JFrame打开JPanel,java,swing,jframe,jpanel,Java,Swing,Jframe,Jpanel,我想做的是,在netbeans中,我有一个大型机类扩展了JFrame。 因为我有一个按钮,在该按钮的操作上,我想打开我的Panel类ExtendesJPanel 我该怎么办 MainFrame.java: public class MainFrame extends javax.swing.JFrame { public MainFrame() { initComponents(); } @SuppressWarnings("unchecked")
public class MainFrame extends javax.swing.JFrame {
public MainFrame() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(160, 160, 160)
.addComponent(jButton1)
.addContainerGap(167, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(138, 138, 138)
.addComponent(jButton1)
.addContainerGap(139, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
System.out.println("Clicked");
}
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 | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
MainFrame frm = new MainFrame();
frm.setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
// End of variables declaration
}
公共类大型机扩展了javax.swing.JFrame{
公共主机(){
初始化组件();
}
@抑制警告(“未选中”)
//
私有组件(){
jButton1=newjavax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setText(“jButton1”);
jButton1.addActionListener(新java.awt.event.ActionListener(){
public void actionPerformed(java.awt.event.ActionEvent evt){
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout=newjavax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(160、160、160)
.addComponent(jButton1)
.addContainerGap(167,简称最大值))
);
layout.setVerticalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(138、138、138)
.addComponent(jButton1)
.addContainerGap(139,简称最大值))
);
包装();
}//
私有void jButton1ActionPerformed(java.awt.event.ActionEvent evt){
System.out.println(“单击”);
}
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
}
}
}catch(ClassNotFoundException |实例化Exception | IllegalacessException | javax.swing.UnsupportedLookAndFeelException ex){
getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE,null,ex);
}
//
/*创建并显示表单*/
invokeLater(new Runnable()){
@凌驾
公开募捐{
大型机frm=新的大型机();
frm.setVisible(真);
}
});
}
//变量声明-不修改
私有javax.swing.JButton jButton1;
//变量结束声明
}
TestPanel.java:
public class TestPanel extends javax.swing.JPanel {
public TestPanel() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel1.setText("Panel");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(155, 155, 155)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(202, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(120, 120, 120)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(144, Short.MAX_VALUE))
);
}// </editor-fold>
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
// End of variables declaration
}
公共类测试面板扩展了javax.swing.JPanel{
公共测试面板(){
初始化组件();
}
@抑制警告(“未选中”)
//
私有组件(){
jLabel1=newjavax.swing.JLabel();
jLabel1.setText(“面板”);
javax.swing.GroupLayout=newjavax.swing.GroupLayout(this);
这个.setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(155155155)
.addComponent(jLabel1,javax.swing.GroupLayout.PREFERRED\u SIZE,43,javax.swing.GroupLayout.PREFERRED\u SIZE)
.addContainerGap(202,简称最大值))
);
layout.setVerticalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(120120120)
.addComponent(jLabel1,javax.swing.GroupLayout.PREFERRED\u SIZE,36,javax.swing.GroupLayout.PREFERRED\u SIZE)
.addContainerGap(144,简称最大值))
);
}//
//变量声明-不修改
私有javax.swing.JLabel jLabel1;
//变量结束声明
}
我得到的解决方案是
this.setContentPane(new FormFillPanel());
对不起,我犯了一些错误…作为新手…我得到的解决方案是
this.setContentPane(new FormFillPanel());
对一些错误感到抱歉…作为新手…很高兴知道您得到了问题的答案,尽管这只是一条建议-这是Swing最基本的功能。难道你不认为你在追求的过程中跑得太快了,你错过了真实事物最基本的部分吗。花点时间,在开始学习之前先阅读基础知识。你不会后悔的:-)+1回答这个问题。提供您自己的答案并将其标记为正确,而不仅仅是更新标题:-)很高兴知道您得到了查询的答案,尽管这只是一条建议-这是Swing的基础。难道你不认为你在追求的过程中跑得太快了,你错过了真实事物最基本的部分吗。花点时间,在开始学习之前先阅读基础知识。你不会后悔的:-)+1回答这个问题。提供您自己的答案并将其标记为正确,而不是仅更新标题:-)