我的目的是让文本框中的数字在点击button1的时候开始滚动，点击button2的时候停止。
这个源码大家不用细看，只要粘下来，然后调试着在里面加方法就行。
见解：我觉的是用线程，不过已经有继承了，所以估计要实现Rannable接口。
- Java code
public class NewJFrame extends javax.swing.JFrame{ public NewJFrame() { initComponents(); } @SuppressWarnings("unchecked") private void initComponents() { button1 = new java.awt.Button(); button2 = new java.awt.Button(); textField1 = new java.awt.TextField(); textField2 = new java.awt.TextField(); textField3 = new java.awt.TextField(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); button1.setLabel("button1"); button1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { button1ActionPerformed(evt); } }); button2.setLabel("button2"); button2.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { button2ActionPerformed(evt); } }); // textField1.setText("textField1"); // // textField2.setText("textField2"); // // textField3.setText("textField3"); javax.swing.GroupLayout layout = new javax.swing.GroupLayout( getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup( layout.createSequentialGroup() .addGroup( layout.createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING) .addGroup( layout.createSequentialGroup() .addGap(107, 107, 107) .addComponent( button1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(47, 47, 47) .addComponent( button2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGroup( layout.createSequentialGroup() .addGap(51, 51, 51) .addComponent( textField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(53, 53, 53) .addComponent( textField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(56, 56, 56) .addComponent( textField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))) .addContainerGap(60, Short.MAX_VALUE))); layout.setVerticalGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup( layout.createSequentialGroup() .addGap(58, 58, 58) .addGroup( layout.createParallelGroup( javax.swing.GroupLayout.Alignment.TRAILING) .addComponent( textField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent( textField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent( textField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addPreferredGap( javax.swing.LayoutStyle.ComponentPlacement.RELATED, 121, Short.MAX_VALUE) .addGroup( layout.createParallelGroup( javax.swing.GroupLayout.Alignment.LEADING) .addComponent( button2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addComponent( button1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(73, 73, 73))); pack(); }// </editor-fold> private void button1ActionPerformed(java.awt.event.ActionEvent evt) { System.out.println("点击开始"); int x = (int) (Math.random() * 10); int y = (int) (Math.random() * 10); int z = (int) (Math.random() * 10); textField1.setText(Integer.toString(x)); textField2.setText(Integer.toString(y)); textField3.setText(Integer.toString(z)); } private void button2ActionPerformed(java.awt.event.ActionEvent evt) { System.out.println("点击关闭"); } /** * @param args * the command line arguments */ public static void main(String args[]) { 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(NewJFrame.class.getName()).log( java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log( java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log( java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log( java.util.logging.Level.SEVERE, null, ex); } java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new NewJFrame().setVisible(true); } }); } // Variables declaration - do not modify private java.awt.Button button1; private java.awt.Button button2; private java.awt.TextField textField1; private java.awt.TextField textField2; private java.awt.TextField textField3; // End of variables declaration}