我正在尝试使用NetBeans中的全局String填充jLabel文本，但每次我尝试打印除String字符之外的任何内容时，它都不会打印任何内容。我已经尝试过直接打印String，我最近的尝试使用了get（）方法。
到目前为止，这是代码，我在第73行填充标签：
public class ChatWindow extends javax.swing.JFrame {
private Integer userID;
private String otherPerson = "";
/**
* Creates new form ChatWindow
* @param id
*/
public ChatWindow(int id) {
initComponents();
userID = id;
otherPerson = userID.toString();
this.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() {
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jTextField1 = new javax.swing.JTextField();
otherPersonLabel = new javax.swing.JLabel();
menuBar = new javax.swing.JMenuBar();
fileMenu = new javax.swing.JMenu();
openMenuItem = new javax.swing.JMenuItem();
saveMenuItem = new javax.swing.JMenuItem();
saveAsMenuItem = new javax.swing.JMenuItem();
exitMenuItem = new javax.swing.JMenuItem();
editMenu = new javax.swing.JMenu();
cutMenuItem = new javax.swing.JMenuItem();
copyMenuItem = new javax.swing.JMenuItem();
pasteMenuItem = new javax.swing.JMenuItem();
deleteMenuItem = new javax.swing.JMenuItem();
helpMenu = new javax.swing.JMenu();
contentsMenuItem = new javax.swing.JMenuItem();
aboutMenuItem = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
jTextArea1.setBackground(new java.awt.Color(248, 248, 248));
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jTextArea1.setText("ContactName: FloopyNoops\nYou: Yes, floopynoops");
jScrollPane1.setViewportView(jTextArea1);
jButton1.setText("Send");
jButton2.setText("Save");
jTextField1.setText("jTextField1");
otherPersonLabel.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
otherPersonLabel.setText(getLabelText());
fileMenu.setMnemonic('f');
fileMenu.setText("File");
openMenuItem.setMnemonic('o');
openMenuItem.setText("Open");
fileMenu.add(openMenuItem);
saveMenuItem.setMnemonic('s');
saveMenuItem.setText("Save");
fileMenu.add(saveMenuItem);
saveAsMenuItem.setMnemonic('a');
saveAsMenuItem.setText("Save As ...");
saveAsMenuItem.setDisplayedMnemonicIndex(5);
fileMenu.add(saveAsMenuItem);
exitMenuItem.setMnemonic('x');
exitMenuItem.setText("Exit");
exitMenuItem.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
exitMenuItemActionPerformed(evt);
}
});
fileMenu.add(exitMenuItem);
menuBar.add(fileMenu);
editMenu.setMnemonic('e');
editMenu.setText("Edit");
cutMenuItem.setMnemonic('t');
cutMenuItem.setText("Cut");
editMenu.add(cutMenuItem);
copyMenuItem.setMnemonic('y');
copyMenuItem.setText("Copy");
editMenu.add(copyMenuItem);
pasteMenuItem.setMnemonic('p');
pasteMenuItem.setText("Paste");
editMenu.add(pasteMenuItem);
deleteMenuItem.setMnemonic('d');
deleteMenuItem.setText("Delete");
editMenu.add(deleteMenuItem);
menuBar.add(editMenu);
helpMenu.setMnemonic('h');
helpMenu.setText("Help");
contentsMenuItem.setMnemonic('c');
contentsMenuItem.setText("Contents");
helpMenu.add(contentsMenuItem);
aboutMenuItem.setMnemonic('a');
aboutMenuItem.setText("About");
helpMenu.add(aboutMenuItem);
menuBar.add(helpMenu);
setJMenuBar(menuBar);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jTextField1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addComponent(otherPersonLabel)
.addGap(0, 0, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(5, 5, 5)
.addComponent(otherPersonLabel)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 202, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void exitMenuItemActionPerformed(java.awt.event.ActionEvent evt) {
this.dispose();
}
private String getLabelText(){
return otherPerson;
}
// Variables declaration - do not modify
private javax.swing.JMenuItem aboutMenuItem;
private javax.swing.JMenuItem contentsMenuItem;
private javax.swing.JMenuItem copyMenuItem;
private javax.swing.JMenuItem cutMenuItem;
private javax.swing.JMenuItem deleteMenuItem;
private javax.swing.JMenu editMenu;
private javax.swing.JMenuItem exitMenuItem;
private javax.swing.JMenu fileMenu;
private javax.swing.JMenu helpMenu;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JMenuBar menuBar;
private javax.swing.JMenuItem openMenuItem;
private javax.swing.JLabel otherPersonLabel;
private javax.swing.JMenuItem pasteMenuItem;
private javax.swing.JMenuItem saveAsMenuItem;
private javax.swing.JMenuItem saveMenuItem;
// End of variables declaration
}
答案 0 :(得分：0)
我相信构造函数是你的问题。
public ChatWindow(int id) {
initComponents(); //otherPerson = "";
userID = id;
otherPerson = userID.toString(); //otherPerson = id;
this.setVisible(true);
}
在设置otherPerson之前初始化组件。设置otherPerson后移动initComponents，它应该再次起作用。
答案 1 :(得分：0)
您正在呼叫＆＃34; initcomponent＆＃34;首先，然后初始化＆＃34; otherPerson＆＃34;班级成员。这样做：
public ChatWindow(int id)
{
userID = id;
otherPerson = userID.toString();
initComponents();
this.setVisible(true);
}