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我有一個Java課程的最終項目，它是青蛙跳躍遊戲。這裏是來形容它的視頻：如何在Java/Swing中使用JLabel製作動畫？
https://www.youtube.com/watch?v=NxWWP9cK24o
我不知道如何使用定時器，我只知道的Thread.sleep。但它不起作用。
這裏我的代碼：
import java.awt.event.ActionListener;
import javax.swing.Timer;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author gamekvnn
*/
public class FrogGame extends javax.swing.JFrame {
/**
* Creates new form ba
*/
public FrogGame() {
initComponents();
}
Timer time;
/**
* 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() {
jPanel1 = new javax.swing.JPanel();
frog1 = new javax.swing.JLabel();
frog2 = new javax.swing.JLabel();
frog3 = new javax.swing.JLabel();
fr0g2 = new javax.swing.JLabel();
fr0g1 = new javax.swing.JLabel();
fr0g3 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
background = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setLayout(null);
frog1.setIcon(new javax.swing.ImageIcon("/home/gamekvnn/NetBeansProjects/Project/src/frog1.png")); // NOI18N
jPanel1.add(frog1);
frog1.setBounds(10, 310, 80, 80);
frog2.setIcon(new javax.swing.ImageIcon("/home/gamekvnn/NetBeansProjects/Project/src/frog1.png")); // NOI18N
jPanel1.add(frog2);
frog2.setBounds(110, 310, 80, 80);
frog3.setIcon(new javax.swing.ImageIcon("/home/gamekvnn/NetBeansProjects/Project/src/frog1.png")); // NOI18N
jPanel1.add(frog3);
frog3.setBounds(210, 310, 80, 80);
fr0g2.setIcon(new javax.swing.ImageIcon("/home/gamekvnn/NetBeansProjects/Project/src/frog2.png")); // NOI18N
jPanel1.add(fr0g2);
fr0g2.setBounds(510, 310, 80, 80);
fr0g1.setIcon(new javax.swing.ImageIcon("/home/gamekvnn/NetBeansProjects/Project/src/frog2.png")); // NOI18N
jPanel1.add(fr0g1);
fr0g1.setBounds(610, 310, 80, 80);
fr0g3.setIcon(new javax.swing.ImageIcon("/home/gamekvnn/NetBeansProjects/Project/src/frog2.png")); // NOI18N
jPanel1.add(fr0g3);
fr0g3.setBounds(410, 310, 80, 80);
jButton1.setText("Start");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jPanel1.add(jButton1);
jButton1.setBounds(520, 20, 100, 29);
background.setIcon(new javax.swing.ImageIcon("/home/gamekvnn/NetBeansProjects/Project/src/UZKEjzG.png")); // NOI18N
jPanel1.add(background);
background.setBounds(0, 0, 710, 440);
background.getAccessibleContext().setAccessibleName("background");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, 708, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, 442, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
frog3.setLocation(frog3.getX()+100, frog3.getY());
repaint();
try {
Thread.sleep(100);; //1000 milliseconds is one second.
} catch(InterruptedException ex) {
Thread.currentThread().interrupt();
}
fr0g3.setLocation(fr0g3.getX()-200, fr0g3.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
fr0g2.setLocation(fr0g2.getX()-100, fr0g2.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
frog3.setLocation(frog3.getX()+200, frog3.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
frog2.setLocation(frog2.getX()+200, frog2.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
frog1.setLocation(frog1.getX()+100, frog1.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
fr0g3.setLocation(fr0g3.getX()-200, fr0g3.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
fr0g2.setLocation(fr0g2.getX()-200, fr0g2.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
fr0g1.setLocation(fr0g1.getX()-200, fr0g1.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
frog3.setLocation(frog3.getX()+100, frog3.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
frog2.setLocation(frog2.getX()+200, frog2.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
frog1.setLocation(frog1.getX()+200, frog1.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
fr0g2.setLocation(fr0g2.getX()-100, fr0g2.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
fr0g1.setLocation(fr0g1.getX()-200, frog1.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
frog1.setLocation(frog1.getX()+100, frog1.getY());
repaint();
try {
Thread.sleep(100);;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
/**
* @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(FrogGame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(FrogGame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(FrogGame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(FrogGame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new FrogGame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel background;
private javax.swing.JLabel fr0g1;
private javax.swing.JLabel fr0g2;
private javax.swing.JLabel fr0g3;
private javax.swing.JLabel frog1;
private javax.swing.JLabel frog2;
private javax.swing.JLabel frog3;
private javax.swing.JButton jButton1;
private javax.swing.JPanel jPanel1;
// End of variables declaration
}
（1-）'但我不知道如何使用計時器 - - 以搜索論壇或網絡爲例。不要期望我們讀你的代碼來試圖理解你在做什麼。我們不會爲你重寫代碼。您也可以閱讀Swing教程中關於[如何使用Swing Timers]（）的部分以獲取信息和示例。「Tightight是我的最後期限」 - 與問題無關。你需要更好地規劃你的時間。 – camickr