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我正在开发一个具有多个文本字段的图形用户界面,用户可以在其中输入数据。当程序打开时,我有关于用户应该在设置为“文本”的文本字段中输入的内容的说明。我将它设置为当用户单击文本字段时,文本将消失,但我无法弄清楚如何在切换到下一个 jtextfield 时让它消失。我希望用户能够单击第一个文本字段,而不必再次使用鼠标,也不必疯狂地使用退格键或删除键。谢谢
/*
* ArcheryProgramView.java
*/
package archeryprogram;
import org.jdesktop.application.Action;
import org.jdesktop.application.ResourceMap;
import org.jdesktop.application.SingleFrameApplication;
import org.jdesktop.application.FrameView;
import org.jdesktop.application.TaskMonitor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyEvent;
import javax.swing.Timer;
import javax.swing.Icon;
import javax.swing.JDialog;
import javax.swing.JFrame;
/**
* The application's main frame.
*/
public class ArcheryProgramView extends FrameView {
public ArcheryProgramView(SingleFrameApplication app) {
super(app);
initComponents();
// status bar initialization - message timeout, idle icon and busy animation, etc
ResourceMap resourceMap = getResourceMap();
int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");
messageTimer = new Timer(messageTimeout, new ActionListener() {
public void actionPerformed(ActionEvent e) {
statusMessageLabel.setText("");
}
});
messageTimer.setRepeats(false);
int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");
for (int i = 0; i < busyIcons.length; i++) {
busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i + "]");
}
busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {
public void actionPerformed(ActionEvent e) {
busyIconIndex = (busyIconIndex + 1) % busyIcons.length;
statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);
}
});
idleIcon = resourceMap.getIcon("StatusBar.idleIcon");
statusAnimationLabel.setIcon(idleIcon);
progressBar.setVisible(false);
// connecting action tasks to status bar via TaskMonitor
TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());
taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
public void propertyChange(java.beans.PropertyChangeEvent evt) {
String propertyName = evt.getPropertyName();
if ("started".equals(propertyName)) {
if (!busyIconTimer.isRunning()) {
statusAnimationLabel.setIcon(busyIcons[0]);
busyIconIndex = 0;
busyIconTimer.start();
}
progressBar.setVisible(true);
progressBar.setIndeterminate(true);
} else if ("done".equals(propertyName)) {
busyIconTimer.stop();
statusAnimationLabel.setIcon(idleIcon);
progressBar.setVisible(false);
progressBar.setValue(0);
} else if ("message".equals(propertyName)) {
String text = (String)(evt.getNewValue());
statusMessageLabel.setText((text == null) ? "" : text);
messageTimer.restart();
} else if ("progress".equals(propertyName)) {
int value = (Integer)(evt.getNewValue());
progressBar.setVisible(true);
progressBar.setIndeterminate(false);
progressBar.setValue(value);
}
}
});
}
@Action
public void showAboutBox() {
if (aboutBox == null) {
JFrame mainFrame = ArcheryProgramApp.getApplication().getMainFrame();
aboutBox = new ArcheryProgramAboutBox(mainFrame);
aboutBox.setLocationRelativeTo(mainFrame);
}
ArcheryProgramApp.getApplication().show(aboutBox);
}
/** 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() {
mainPanel = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jTextField1 = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jLabel4 = new javax.swing.JLabel();
jTextField4 = new javax.swing.JTextField();
jButton2 = new javax.swing.JButton();
jLabel5 = new javax.swing.JLabel();
jTextField5 = new javax.swing.JTextField();
jTextField6 = new javax.swing.JTextField();
jTextField7 = new javax.swing.JTextField();
jTextField8 = new javax.swing.JTextField();
menuBar = new javax.swing.JMenuBar();
javax.swing.JMenu fileMenu = new javax.swing.JMenu();
javax.swing.JMenuItem exitMenuItem = new javax.swing.JMenuItem();
javax.swing.JMenu helpMenu = new javax.swing.JMenu();
javax.swing.JMenuItem aboutMenuItem = new javax.swing.JMenuItem();
statusPanel = new javax.swing.JPanel();
javax.swing.JSeparator statusPanelSeparator = new javax.swing.JSeparator();
statusMessageLabel = new javax.swing.JLabel();
statusAnimationLabel = new javax.swing.JLabel();
progressBar = new javax.swing.JProgressBar();
org.jdesktop.application.ResourceMap resourceMap = org.jdesktop.application.Application.getInstance(archeryprogram.ArcheryProgramApp.class).getContext().getResourceMap(ArcheryProgramView.class);
mainPanel.setBackground(resourceMap.getColor("mainPanel.background")); // NOI18N
mainPanel.setName("mainPanel"); // NOI18N
jScrollPane1.setName("jScrollPane1"); // NOI18N
jTextArea1.setBackground(resourceMap.getColor("jTextArea1.background")); // NOI18N
jTextArea1.setColumns(20);
jTextArea1.setFont(resourceMap.getFont("jTextArea1.font")); // NOI18N
jTextArea1.setForeground(resourceMap.getColor("jTextArea1.foreground")); // NOI18N
jTextArea1.setRows(5);
jTextArea1.setText(resourceMap.getString("jTextArea1.text")); // NOI18N
jTextArea1.setName("jTextArea1"); // NOI18N
jScrollPane1.setViewportView(jTextArea1);
jTextField1.setText(resourceMap.getString("jTextField1.text")); // NOI18N
jTextField1.setName("jTextField1"); // NOI18N
jTextField1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField1MouseClicked(evt);
}
});
jLabel1.setText(resourceMap.getString("jLabel1.text")); // NOI18N
jLabel1.setName("jLabel1"); // NOI18N
jLabel2.setText(resourceMap.getString("jLabel2.text")); // NOI18N
jLabel2.setName("jLabel2"); // NOI18N
jLabel3.setText(resourceMap.getString("jLabel3.text")); // NOI18N
jLabel3.setName("jLabel3"); // NOI18N
jTextField2.setText(resourceMap.getString("jTextField2.text")); // NOI18N
javax.swing.ActionMap actionMap = org.jdesktop.application.Application.getInstance(archeryprogram.ArcheryProgramApp.class).getContext().getActionMap(ArcheryProgramView.class, this);
jTextField2.setAction(actionMap.get("clear")); // NOI18N
jTextField2.setName("jTextField2"); // NOI18N
jTextField2.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField2MouseClicked(evt);
}
});
jTextField3.setText(resourceMap.getString("jTextField3.text")); // NOI18N
jTextField3.setName("jTextField3"); // NOI18N
jTextField3.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField3MouseClicked(evt);
}
});
jTextField3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField3ActionPerformed(evt);
}
});
jTextField3.addInputMethodListener(new java.awt.event.InputMethodListener() {
public void caretPositionChanged(java.awt.event.InputMethodEvent evt) {
jTextField3CaretPositionChanged(evt);
}
public void inputMethodTextChanged(java.awt.event.InputMethodEvent evt) {
}
});
jTextField3.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyReleased(java.awt.event.KeyEvent evt) {
jTextField3KeyReleased(evt);
}
});
jButton1.setAction(actionMap.get("weight")); // NOI18N
jButton1.setText(resourceMap.getString("jButton1.text")); // NOI18N
jButton1.setName("jButton1"); // NOI18N
jLabel4.setText(resourceMap.getString("jLabel4.text")); // NOI18N
jLabel4.setName("jLabel4"); // NOI18N
jTextField4.setText(resourceMap.getString("jTextField4.text")); // NOI18N
jTextField4.setName("jTextField4"); // NOI18N
jTextField4.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField4MouseClicked(evt);
}
});
jButton2.setText(resourceMap.getString("jButton2.text")); // NOI18N
jButton2.setName("jButton2"); // NOI18N
jLabel5.setText(resourceMap.getString("jLabel5.text")); // NOI18N
jLabel5.setName("jLabel5"); // NOI18N
jTextField5.setText(resourceMap.getString("jTextField5.text")); // NOI18N
jTextField5.setName("jTextField5"); // NOI18N
jTextField5.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField5MouseClicked(evt);
}
});
jTextField6.setText(resourceMap.getString("jTextField6.text")); // NOI18N
jTextField6.setName("jTextField6"); // NOI18N
jTextField6.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField6MouseClicked(evt);
}
});
jTextField7.setText(resourceMap.getString("jTextField7.text")); // NOI18N
jTextField7.setName("jTextField7"); // NOI18N
jTextField7.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField7MouseClicked(evt);
}
});
jTextField8.setText(resourceMap.getString("jTextField8.text")); // NOI18N
jTextField8.setName("jTextField8"); // NOI18N
javax.swing.GroupLayout mainPanelLayout = new javax.swing.GroupLayout(mainPanel);
mainPanel.setLayout(mainPanelLayout);
mainPanelLayout.setHorizontalGroup(
mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addGap(19, 19, 19)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(193, 193, 193))
.addGroup(mainPanelLayout.createSequentialGroup()
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 218, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, 163, Short.MAX_VALUE)
.addGap(83, 83, 83))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, mainPanelLayout.createSequentialGroup()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 89, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 92, Short.MAX_VALUE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(mainPanelLayout.createSequentialGroup()
.addGap(144, 144, 144)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(26, 26, 26)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, 79, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jTextField8, javax.swing.GroupLayout.PREFERRED_SIZE, 76, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(30, 30, 30)
.addComponent(jButton1))
.addComponent(jButton2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5))
.addGap(191, 191, 191))
);
mainPanelLayout.setVerticalGroup(
mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(70, 70, 70)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel3)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4)
.addComponent(jButton1)
.addComponent(jTextField8, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(18, 18, 18)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5)
.addComponent(jButton2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jLabel2)
.addContainerGap(258, Short.MAX_VALUE))
);
menuBar.setName("menuBar"); // NOI18N
fileMenu.setText(resourceMap.getString("fileMenu.text")); // NOI18N
fileMenu.setName("fileMenu"); // NOI18N
exitMenuItem.setAction(actionMap.get("quit")); // NOI18N
exitMenuItem.setName("exitMenuItem"); // NOI18N
fileMenu.add(exitMenuItem);
menuBar.add(fileMenu);
helpMenu.setText(resourceMap.getString("helpMenu.text")); // NOI18N
helpMenu.setName("helpMenu"); // NOI18N
aboutMenuItem.setAction(actionMap.get("showAboutBox")); // NOI18N
aboutMenuItem.setName("aboutMenuItem"); // NOI18N
helpMenu.add(aboutMenuItem);
menuBar.add(helpMenu);
statusPanel.setName("statusPanel"); // NOI18N
statusPanelSeparator.setName("statusPanelSeparator"); // NOI18N
statusMessageLabel.setName("statusMessageLabel"); // NOI18N
statusAnimationLabel.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
statusAnimationLabel.setName("statusAnimationLabel"); // NOI18N
progressBar.setName("progressBar"); // NOI18N
javax.swing.GroupLayout statusPanelLayout = new javax.swing.GroupLayout(statusPanel);
statusPanel.setLayout(statusPanelLayout);
statusPanelLayout.setHorizontalGroup(
statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(statusPanelSeparator, javax.swing.GroupLayout.DEFAULT_SIZE, 1162, Short.MAX_VALUE)
.addGroup(statusPanelLayout.createSequentialGroup()
.addContainerGap()
.addComponent(statusMessageLabel)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 992, Short.MAX_VALUE)
.addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(statusAnimationLabel)
.addContainerGap())
);
statusPanelLayout.setVerticalGroup(
statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(statusPanelLayout.createSequentialGroup()
.addComponent(statusPanelSeparator, javax.swing.GroupLayout.PREFERRED_SIZE, 2, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(statusMessageLabel)
.addComponent(statusAnimationLabel)
.addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(3, 3, 3))
);
setComponent(mainPanel);
setMenuBar(menuBar);
setStatusBar(statusPanel);
}// </editor-fold>
private void jTextField2MouseClicked(java.awt.event.MouseEvent evt) {
jTextField2.setText("");// TODO add your handling code here:
}
private void jTextField3MouseClicked(java.awt.event.MouseEvent evt) {
jTextField3.setText(""); // TODO add your handling code here:
}
private void jTextField1MouseClicked(java.awt.event.MouseEvent evt) {
jTextField1.setText(""); // TODO add your handling code here:
}
private void jTextField4MouseClicked(java.awt.event.MouseEvent evt) {
jTextField4.setText(""); // TODO add your handling code here:
}
private void jTextField3KeyReleased(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
}
private void jTextField3CaretPositionChanged(java.awt.event.InputMethodEvent evt) {
// TODO add your handling code here:
}
private void jTextField5MouseClicked(java.awt.event.MouseEvent evt) {
jTextField5.setText(""); // TODO add your handling code here:
}
private void jTextField6MouseClicked(java.awt.event.MouseEvent evt) {
jTextField6.setText(""); // TODO add your handling code here:
}
private void jTextField7MouseClicked(java.awt.event.MouseEvent evt) {
jTextField7.setText(""); // TODO add your handling code here:
}
private void jTextField3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jTextField3FocusGained(java.awt.event.FocusEvent evt) {
jTextField3.setText(null);
}
@Action
public void weight() {
float gpi= Float.parseFloat(jTextField2.getText());
float weight= Float.parseFloat(jTextField3.getText());
float novanes= Float.parseFloat(jTextField5.getText());
float vaneweight= Float.parseFloat(jTextField6.getText());
float nock= Float.parseFloat(jTextField7.getText());
float point= Float.parseFloat(jTextField8.getText());
float totalvane= novanes*vaneweight;
float totalweight= (gpi*weight)+totalvane+nock+point;
System.out.println("totalweight = "+totalweight);
jLabel4.setText(""+totalweight+" grains");
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
private javax.swing.JTextField jTextField6;
private javax.swing.JTextField jTextField7;
private javax.swing.JTextField jTextField8;
private javax.swing.JPanel mainPanel;
private javax.swing.JMenuBar menuBar;
private javax.swing.JProgressBar progressBar;
private javax.swing.JLabel statusAnimationLabel;
private javax.swing.JLabel statusMessageLabel;
private javax.swing.JPanel statusPanel;
// End of variables declaration
private final Timer messageTimer;
private final Timer busyIconTimer;
private final Icon idleIcon;
private final Icon[] busyIcons = new Icon[15];
private int busyIconIndex = 0;
private JDialog aboutBox;
}
最佳答案
右键单击您的文本字段组件并转到“事件”,然后转到“焦点”,然后选择“获得焦点”,代码将显示为 private void
jTextField1FocusGained(java.awt.event.FocusEvent evt) {
// TODO add your handling code here:
}
现在编辑//TODO 在此处添加您的处理代码:并将其设置为:
jTextField1FocusGained(java.awt.event.FocusEvent evt) {
jtextField.setText("");
}
所以当你按下 tab 时它会获得焦点(如果你从另一个 tab 按下)
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我一直在阅读有关 的文档标签,我似乎无法理解它与简单地使用 有何不同那是 display: none; 文档:template tag 例子 对比 例子
我需要一个脚本来复制当开关按钮打开时标记,当开关按钮关闭时删除标记。我需要一个简单的方法。这是开关按钮: 我试过这个: var change
JSF 是一个 MVC 框架,但我很困惑为什么我们已经有了这么多 HTML 标签还需要 JSF 标签。毫无疑问,JSF 简化了很多事情。我想进一步了解 JSF 中的模型 View 和 Controll
我在这个 website 上看到了那些 html 代码: Homepa
我添加了 photoswipe 插件,可以使用 搜索我的所有照片。标签,如果点击,照片就会变成全屏。我让它工作了,但现在我的导航栏(有 标签)在点击时会触发 photoswipe 插件。 在 ph
标签
我正在尝试截断显示自 的文本标签,但它不工作。我将样式应用于其他标签样式并且它确实有效(我看到的示例中没有一个使用 标签)。我想知道是否有人可以向我解释为什么会这样(我不是最擅长 HTML/CSS
HTML 是这样的: Menu 1 Menu 2 Sub menu 2
我可以更改 TextInputLayout 的位置 float 标签(底部 float 标签)吗?我需要为波纹管 float 标签设置正确的位置。 最佳答案 我解决了我的问题,这是我的 xml:
我的代码是 printMsg : function(data) { $("#message").html(data.bodyText); ... } 这里 data.body
我是 Scrapy 和 Xpath 的初学者,我正在寻找解析具有以下结构的网站 cat1 value1 value2
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我必须从 xml 中解析数据。这是我的 xml- 或者它的 url 是:http://mobileecommerce.site247365.com/admin/catdata.xml News f
如何创建应该允许多行数据的标记。不要说使用textarea标签。我知道,但我只想 标记因为标签具有 value 属性。所以当我从 xml 文件获取值时,我应该使用 jquery 语法动态获取.. 最佳
我有一个页面使用我定义的某些样式。 在同一页面上,我刚刚导入了一个使用自己样式的外部 jQuery 插件,例如,包括 。被我自己覆盖的标签样式。 如何确保我的样式表中的样式不会覆盖 jQuery 插件
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