Thread: When i run the Program, the CPU usage become very high

Hi!
I have written a program in Java, but when i run it the CPU usage become very high, if it run in a slow CPU computer, then the Computer become very very slow, why it is like this....Please tell me the reason
Thank You!

Thank you for you reply!
The code which has this problem is very long about 3000 lines in many classes, i will tell you the design which i have done, it like this: I have written one ATM System in three Languages, if i run only in one Language the problem is not very big, if run it in three Languages then the CPU usage goes to 100, the Computer become very slow, even it not working normally.... the code which i collected three languages in one frame i can post it：


package com.ustb;

import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;

import javax.swing.*;
import javax.swing.border.Border;

public class AllInOneFrame extends JFrame implements ActionListener, MouseListener {
private static final long serialVersionUID = 1L;

static JPanel cards;

private JPanel panel1, panel2, panel3;

private static JPanel panel4 = new JPanel();
private JButton englishButton = new JButton("English");
private JButton chinesehButton = new JButton("中文");
private JButton persianhButton = new JButton("فارسی");

private ImageIcon Up = new ImageIcon(getClass().getResource("image/Up.png"));
private ImageIcon Up2 = new ImageIcon(getClass().getResource(
"image/Up2.png"));
private ImageIcon Do = new ImageIcon(getClass().getResource("image/Do.png"));
private ImageIcon Do2 = new ImageIcon(getClass().getResource(
"image/Do2.png"));
private JLabel lableAdvertizeUp = new JLabel(Up);
private JLabel lableAdvertizeDo = new JLabel(Do);
private JLabel label = new JLabel();
Border border = BorderFactory.createRaisedBevelBorder();

ATMEnglish english = new ATMEnglish();
ATMChinese chinese = new ATMChinese();
ATMPersian persian = new ATMPersian();

static boolean error;
static boolean reSet = false;
static ArrayList<String> errorIDList = new ArrayList<String>();

Border border1 = BorderFactory.createLoweredBevelBorder();

public AllInOneFrame() {
panel1 = new JPanel(new FlowLayout());
panel1.add(englishButton);
panel1.add(chinesehButton);
panel1.add(persianhButton);
englishButton.setBackground(Color.decode("#800000" ));
chinesehButton.setBackground(Color.decode("#800000 "));
persianhButton.setBackground(Color.decode("#800000 "));
englishButton.setBorder(border1);
chinesehButton.setBorder(border1);
persianhButton.setBorder(border1);
MyFonts.setLabelFont(englishButton, Color.WHITE, 40);
MyFonts.setLabelFont(chinesehButton, Color.WHITE, 40);
MyFonts.setLabelFont(persianhButton, Color.WHITE, 40);
MyFonts.setComponentFont(panel1, "#0000A0", Color.BLACK, null, 0);

JLabel eng = new JLabel("Please Select Your Language", JLabel.CENTER);
JLabel chn = new JLabel("请选择语言", JLabel.CENTER);
JLabel per = new JLabel("لطفاً زبان خودرا انتخاب کنید", JLabel.CENTER);
panel2 = new JPanel(new GridLayout(3, 0));
panel2.add(eng);
panel2.add(chn);
panel2.add(per);
MyFonts.setLabelFont(eng, Color.YELLOW, 50);
MyFonts.setLabelFont(chn, Color.YELLOW, 50);
MyFonts.setLabelFont(per, Color.YELLOW, 50);
MyFonts.setComponentFont(panel2, "#0000A0", Color.BLACK, null, 0);

panel3 = new JPanel(new BorderLayout());
panel3.add(panel2, BorderLayout.NORTH);
panel3.add(panel1, BorderLayout.CENTER);

panel4 = new JPanel(new BorderLayout());
panel4.add(panel3, BorderLayout.CENTER);

cards = new JPanel();
cards.setLayout(new CardLayout());
cards.add("first", label);
cards.add("center", panel4);
cards.add("one", english.englishPanel());
cards.add("two", chinese.chinesePanel());
cards.add("three", persian.persianPanel());

this.add(lableAdvertizeUp, BorderLayout.NORTH);
this.add(cards, BorderLayout.CENTER);
this.add(lableAdvertizeDo, BorderLayout.SOUTH);
this.setSize(800, 600);
this.setTitle("Auto Transfere Money");
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLocationRelativeTo(null);
this.setResizable(false);
this.setVisible(true);

englishButton.addActionListener(this);
chinesehButton.addActionListener(this);
persianhButton.addActionListener(this);
englishButton.addMouseListener(this);
chinesehButton.addMouseListener(this);
persianhButton.addMouseListener(this);
label.addMouseListener(this);
panel4.addMouseListener(this);

new Thread(new MyAnimations.MyAnimation2(lableAdvertizeUp,
lableAdvertizeDo, Up, Do, Up2, Do2)).start();
MyAnimations anim2 = new MyAnimations();
MyAnimations.MyAnimation3 animation2 = anim2.new MyAnimation3(label,"pic", 3);
new Thread(animation2).start();
new Thread(new WrongPasswordLocker()).start();
}

public static void main(String[] args) {
new AllInOneFrame();

}

public class WrongPasswordLocker implements Runnable {

public void run() {
try {
while (true) {
for (int i = 1; i <= 60; i++) {
Thread.sleep(1000);
if(error) {
i = 1;
error = false;
}
}
if(errorIDList.size() == 0)
continue;
else {
errorIDList.clear();
}
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}

}

public void actionPerformed(ActionEvent e) {
if(e.getSource() == englishButton) {
english.startSeytem = true;
reSet = true;
((CardLayout) cards.getLayout()).show(cards, "one");
}
if(e.getSource() == chinesehButton) {
chinese.startSeytem = true;
reSet = true;
((CardLayout) cards.getLayout()).show(cards, "two");
}
if(e.getSource() == persianhButton) {
persian.startSeytem = true;
reSet = true;
((CardLayout) cards.getLayout()).show(cards, "three");
}
}

static void addListener() {
//panel4.addMouseListener(this);
}

public void mouseClicked(MouseEvent e) {

}

public void mouseEntered(MouseEvent e) {
if(e.getSource() == englishButton) {
englishButton.setBackground(Color.decode("#000000" ));
}
else if(e.getSource() == chinesehButton) {
chinesehButton.setBackground(Color.decode("#000000 "));
}
else if(e.getSource() == persianhButton) {
persianhButton.setBackground(Color.decode("#000000 "));
}
else if(e.getSource() == label)
((CardLayout) cards.getLayout()).show(cards, "center");
}

public void mouseExited(MouseEvent e) {
if(e.getSource() == englishButton)
englishButton.setBackground(Color.decode("#800000" ));
else if(e.getSource() == chinesehButton)
chinesehButton.setBackground(Color.decode("#800000 "));
else if(e.getSource() == persianhButton)
persianhButton.setBackground(Color.decode("#800000 "));
else if(e.getSource() == panel4)
((CardLayout) cards.getLayout()).show(cards, "first");

}

public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub

}

public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub

}

}