Java JPanel从其原始位置动态生成外部
我在Java JPanel从其原始位置动态生成外部,java,swing,jpanel,jtabbedpane,dynamically-generated,Java,Swing,Jpanel,Jtabbedpane,Dynamically Generated,我在JPanel中动态生成一些文本框和标签,但当我将该面板放置在JTabbedPane中时,它不会在其原始位置内生成。它总是去别的地方 类构造函数中的代码JFrameclass构造函数: panel = jPanel1; panel.setLayout(new FlowLayout()); add(panel, BorderLayout.LINE_START); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel
中动态生成一些文本框和标签,但当我将该面板放置在JTabbedPane
中时,它不会在其原始位置内生成。它总是去别的地方
类构造函数中的代码JFrame
class构造函数:
panel = jPanel1;
panel.setLayout(new FlowLayout());
add(panel, BorderLayout.LINE_START);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
JButton中的代码
:
JLabel lbl = new JLabel();
lbl.setText("Label");
panel.add(lbl);
JTextField txt = new JTextField(12);
txt.setText("Text field");
panel.add(txt);
panel.revalidate();
validate();
该按钮用于动态生成文本框和标签jPanel1
是放置在框架内的面板。它可以完美地直接放置在一个框架内,但当它被放置在一个选项卡式窗格内后,它就乱来了
在生成面板内部的组件后,是否有方法刷新面板并删除其中的组件
以下是完整的Jframe类:
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.LayoutManager;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author sajithru
*/
public class DynamicTextboxes extends javax.swing.JFrame {
/**
* Creates new form DynamicTextboxes
*/
private JPanel panel;
public DynamicTextboxes() {
initComponents();
panel = jPanel1;
panel.setLayout(new FlowLayout());
add(panel, BorderLayout.LINE_START);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jButton1 = new javax.swing.JButton();
jTabbedPane1 = new javax.swing.JTabbedPane();
jPanel1 = new javax.swing.JPanel();
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 jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 206, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 258, Short.MAX_VALUE)
);
jTabbedPane1.addTab("tab1", jPanel1);
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(190, 190, 190)
.addComponent(jButton1)
.addContainerGap(216, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jTabbedPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 211, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(16, 16, 16)
.addComponent(jTabbedPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 286, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1)
.addContainerGap(40, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
JLabel lbl = new JLabel();
lbl.setText("Label");
panel.add(lbl);
JTextField txt = new JTextField(12);
txt.setText("Text field");
panel.add(txt);
panel.revalidate();
validate();
}
/**
* @param args the command line arguments
*/
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(DynamicTextboxes.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(DynamicTextboxes.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(DynamicTextboxes.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(DynamicTextboxes.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 DynamicTextboxes().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JPanel jPanel1;
private javax.swing.JTabbedPane jTabbedPane1;
// End of variables declaration
}
导入java.awt.BorderLayout;
导入java.awt.FlowLayout;
导入java.awt.GridLayout;
导入java.awt.LayoutManager;
导入javax.swing.JFrame;
导入javax.swing.JLabel;
导入javax.swing.JPanel;
导入javax.swing.JTextField;
/*
*要更改此模板,请选择工具|模板
*然后在编辑器中打开模板。
*/
/**
*
*@作者sajithru
*/
公共类DynamicTextBox扩展了javax.swing.JFrame{
/**
*创建新表单DynamicTextBox
*/
私人JPanel小组;
公共动态文本框(){
初始化组件();
面板=jPanel1;
panel.setLayout(新的FlowLayout());
添加(面板、边框布局、线条开始);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(真);
}
/**
*从构造函数中调用此方法来初始化表单。
*警告:不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告(“未选中”)
//
私有组件(){
jButton1=newjavax.swing.JButton();
jTabbedPane1=newjavax.swing.JTabbedPane();
jPanel1=newjavax.swing.JPanel();
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 jPanel1Layout=新的javax.swing.GroupLayout(jPanel1);
setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0,206,短。最大值)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0,258,短.MAX_值)
);
jTabbedPane1.addTab(“tab1”,jPanel1);
javax.swing.GroupLayout=newjavax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(190190190)
.addComponent(jButton1)
.addContainerGap(216,简称最大值))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING,layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT\u SIZE,Short.MAX\u值)
.addComponent(jTabbedPane1,javax.swing.GroupLayout.PREFERRED\u SIZE,211,javax.swing.GroupLayout.PREFERRED\u SIZE)
.addGap(18、18、18))
);
layout.setVerticalGroup(
createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(16,16,16)
.addComponent(jTabbedPane1,javax.swing.GroupLayout.PREFERRED_SIZE,286,javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1)
.addContainerGap(40,简称最大值))
);
包装();
}//
私有void jButton1ActionPerformed(java.awt.event.ActionEvent evt){
//TODO在此处添加您的处理代码:
JLabel lbl=新的JLabel();
lbl.setText(“标签”);
面板。添加(lbl);
JTextField txt=新的JTextField(12);
txt.setText(“文本字段”);
panel.add(txt);
panel.revalidate();
验证();
}
/**
*@param指定命令行参数
*/
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){
java.util.logging.Logger.getLogger(dynamicTextBox.class.getName()).log(java.util.logging.Level.severy,null,ex);
}catch(实例化异常){
java.util.logging.Logger.getLogger(dynamicTextBox.class.getName()).log(java.util.logging.Level.severy,null,ex);
}捕获(非法访问例外){
java.util.logging.Logger.getLogger(dynamicTextBox.class.getName()).log(java.util.logging.Level.severy,null,ex);
}catch(javax.swing.UnsupportedLookAndFeelException ex){
java.util.logging.Logge
import java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
/**
* @see https://stackoverflow.com/a/17165034/230513
*/
public class DynamicTextboxes extends javax.swing.JFrame {
/**
* Creates new form DynamicTextboxes
*/
public DynamicTextboxes() {
initComponents();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
private void initComponents() {
jButton1 = new javax.swing.JButton();
jTabbedPane1 = new javax.swing.JTabbedPane();
jPanel1 = new javax.swing.JPanel(new GridLayout(0, 1));
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jPanel1.add(createPanel());
jTabbedPane1.addTab("tab1", jPanel1);
add(jTabbedPane1);
JPanel p = new JPanel();
p.add(jButton1);
add(p, BorderLayout.SOUTH);
pack();
setLocationByPlatform(true);
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
jPanel1.add(createPanel());
pack();
}
private JPanel createPanel() {
JPanel p = new JPanel();
JLabel lbl = new JLabel();
lbl.setText("Label");
p.add(lbl);
JTextField txt = new JTextField(12);
txt.setText("Text field");
p.add(txt);
return p;
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new DynamicTextboxes().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JPanel jPanel1;
private javax.swing.JTabbedPane jTabbedPane1;
// End of variables declaration
}