一步一步掌握java的线程机制(一)----创建线程

public class SwingTypeTester extends JFrame implements CharacterSource{
    protected RandomCharacterGenerator producer;
    private CharacterDisplayCanvas displayCanvas;
    private CharacterDisplayCanvas feedbackCanvas;
    private JButton quitButton;
    private JButton startButton;
    private CharacterEventHandler handler;

    public SwingTypeTester() {
        initComponents();
    }

    private void initComponents() {
        handler = new CharacterEventHandler();
        displayCanvas = new CharacterDisplayCanvas();
        feedbackCanvas = new CharacterDisplayCanvas();
        quitButton = new JButton();
        startButton = new JButton();
        add(displayCanvas, BorderLayout.NORTH);
        add(feedbackCanvas, BorderLayout.CENTER);
        JPanel p = new JPanel();
        startButton.setLabel("Start");
        quitButton.setLabel("Quit");
        p.add(startButton);
        p.add(quitButton);
        
        add(p, BorderLayout.SOUTH);
        addWindowListener(new WindowAdapter(){
            public void windowClosing(WindowEvent evt){
                quit();
            }
        });
        
        feedbackCanvas.addKeyListener(new KeyAdapter(){
            public void keyPressed(KeyEvent ke){
                char c = ke.getKeyChar();
                if(c != KeyEvent.CHAR_UNDEFINED){
                    newCharacter((int)c);
                }
            }
        });
        
        startButton.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent arg0) {
                 producer = new RandomCharacterGenerator();
                 displayCanvas.setCharacterSource(producer);
                 producer.start();
                 startButton.setEnabled(false);
                 feedbackCanvas.setEnabled(true);
                 feedbackCanvas.requestFocus();
            }
        });
        
        quitButton.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent e) {
                 quit();
            }
        });
        pack();
    }
    
    private void quit(){
        System.exit(0);
    }
    
    public void addCharacterListener(CharacterListener cl){
        handler.addCharacterListener(cl);
    }
    
    public void removeCharacterListener(CharacterListener cl){
        handler.removeCharacterListener(cl);
    }
    
    public void newCharacter(int c){
        handler.fireNewCharacter(this,  c);
    }
    
    public void nextCharacter(){
        throw new IllegalStateException("We don't produce on demand");
    }
    
    public static void main(String[] args){
        new SwingTypeTester().show();
    }
}

public class RandomCharacterGenerator extends Thread implements CharacterSource {
    static char[] chars;
    static String charArray = "abcdefghijklmnopqrstuvwxyz0123456789";
    static {
        chars = charArray.toCharArray();
    }

    Random random;
    CharacterEventHandler handler;

    public RandomCharacterGenerator() {
        random = new Random();
        handler = new CharacterEventHandler();
    }

    public int getPauseTime() {
        return (int) (Math.max(1000, 5000 * random.nextDouble()));
    }

    @Override
    public void addCharacterListener(CharacterListener cl) {
        handler.addCharacterListener(cl);
    }

    @Override
    public void removeCharacterListener(CharacterListener cl) {
        handler.removeCharacterListener(cl);
    }

    @Override
    public void nextCharacter() {
        handler.fireNewCharacter(this,
                (int) chars[random.nextInt(chars.length)]);
    }

    public void run() {
        for (;;) {
            nextCharacter();
            try {
                Thread.sleep(getPauseTime());
            } catch (InterruptedException ie) {
                return;
            }
        }
    }
}

Thread thread = new Thread(new Runnable(){
       @Override
       public void run(){
          ...
       }
});

ExecutorService exec = Executors.newCachedThreadPool();
exec.executor(new RunnableClass);

ExecutorService exec = Executors.newFixedThreadPool(5);

public void main(String[] args){
     ExecutorService cachedExec = Executors.newCachedThreadPool();
     for(int i = 0; i < 5; i++){
        cachedExec.execute(new RunnableClass);
     }
     cachedExec.shutdown();

     ExecutorService fixedExec = Executors.newFixedThreadPool(3);
     for(int i = 0; i < 5; i++){
         fixedExec.execute(new RunnableClass);
     }
     fixedExec.shutdown();
}