Java游戏开发中如何暂停和恢复线程
我需要知道如何暂停线程并在检查条件后恢复它Java游戏开发中如何暂停和恢复线程,java,multithreading,wait,notify,Java,Multithreading,Wait,Notify,我需要知道如何暂停线程并在检查条件后恢复它 Thread t = new Thread () { public void run() { while(true) { update(); repaint(); try { Thread.sleep(50); } catch(InterruptedException e){} } } }; 上面的代码是我的游戏循环，我需要这是暂停和恢
Thread t = new Thread () {
public void run() {
while(true) {
update();
repaint();
try {
Thread.sleep(50);
} catch(InterruptedException e){}
}
}
};
suspend（）resume（）// all imports goes here /** Bouncing Ball (Animation) via custom thread */
public class JavaApplication12 extends JFrame implements KeyListener{
// Define named-constants
private static final int CANVAS_WIDTH = 640;
private static final int CANVAS_HEIGHT = 600;
private static final int UPDATE_INTERVAL = 10;
milliseconds int xx = 200; int yy = 500;
Shape a1; Shape a2; float das[] = {10.0f}; int f = 20;
boolean r = true;
Font font = new Font("Arial",Font.ROMAN_BASELINE,f);
BasicStroke color = new BasicStroke (10,BasicStroke.CAP_ROUND,BasicStroke.JOIN_BEVEL,10.0f,das,0.0f);
GradientPaint dash = new GradientPaint(0,0,Color.BLUE,100,0,Col or.CYAN);
Rectangle2D a3;
Rectangle2D a12;
Rectangle2D a4;
Rectangle2D a5;
Rectangle2D a6;
Rectangle2D a7;
Rectangle2D a8;
Rectangle2D a9;
Rectangle2D a10;
Rectangle2D a11; Rectangle2D a13;
Rectangle2D a14;
Rectangle2D a15; Rectangle2D a16;
Rectangle2D a17; Rectangle2D a18;
Rectangle2D a19; Rectangle2D a20;
Rectangle2D a21; Rectangle2D a22;
Rectangle2D a23;
Rectangle2D a25;
ArrayList s = new ArrayList();
Color c2 = Color.RED;
private DrawCanvas canvas; //the drawing canvas (extends JPanel)
// Attributes of moving object
// top-left (x, y)
private int x = 200;
private int y = 480;
//width and height
private int size = 20;
//moving speed in x and y directions
private int xSpeed = 3;
//displacement per step in x and y
private int ySpeed = 5;
/** Constructor to setup the GUI components */
public JavaApplication12() {
canvas = new DrawCanvas();
canvas.setPreferredSize(new Dimension(CANVAS_WIDTH, CANVAS_HEIGHT));
this.setContentPane(canvas);
this.setDefaultCloseOperation(EXIT_ON_ CLOSE);
this.pack();
this.setTitle("Bouncing Ball");
this.setVisible(true); addKeyListener(this);
fun();
}
Thread updateThread = new Thread() { @Override public void run() {
while (r) { update(); // update the (x, y) position
repaint(); // Refresh the JFrame. Called back paintComponent()
try { // Delay and give other thread a chance to run
Thread.sleep(UPDATE_INTERVAL); //milliseconds
} catch (InterruptedException ignore) {} } }
};
/** Update the (x, y) position of the moving object */
public void update() {
x += xSpeed; y += ySpeed;
if (x > CANVAS_WIDTH - size || x < 0) { xSpeed = -xSpeed; }
if (y > CANVAS_HEIGHT - 80 || y < 0) { ySpeed = -ySpeed; }
}
@Override public void keyTyped(KeyEvent ke) { }
@Override
@SuppressWarnings({"deprecation", "deprecation"})
public void keyPressed(KeyEvent ke) {
int keycode = ke.getKeyCode();
if(keycode == KeyEvent.VK_LEFT) { xx = xx-15; }
if(keycode == KeyEvent.VK_SPACE) {
if(r == true) {
//r = false;
updateThread.start();
}
}
if(keycode == KeyEvent.VK_ESCAPE) { }
if(keycode == KeyEvent.VK_RIGHT) { xx = xx+15; }
}
@Override public void keyReleased(KeyEvent ke) {
// throw new UnsupportedOperationException("Not supported yet.");
}
/** DrawCanvas (inner class) is a JPanel used for custom drawing */
class DrawCanvas extends JPanel {
private static final long serialVersionUID = 1L;
int i=0;
int liv = 3;
@Override
public void paintComponent(Graphics g) { super.paintComponent(g); //paint parent's background Graphics2D d = (Graphics2D)g;
a1 = new Ellipse2D.Double(x,y,size,size);
d.drawLine(0,540,640,540);
for(Rectangle2D r : s){
d.setStroke(color);
//d.setPaint(dash);
d.draw(r);
}
a25 = new Rectangle2D.Double(0,540,1000,10);
d.draw(a25);
setBackground(Color.WHITE);
d.setColor(Color.BLUE);
a2 = new RoundRectangle2D.Double(xx,yy,120,10,2 0,20);
d.fill(a1); d.setPaint(c2);
d.fill(a2); d.setFont(font);
d.drawString("Score : "+i,5,575);
d.drawString("Life : "+liv,550,575);
if(a1.intersects(a25.getBounds())) {
if(liv>0) { liv = liv-1;}
if(liv == 0) { //JOptionPane.showMessageDialog(null, "","",0);
} }
if(s.contains(a3) && a1.intersects(a3.getBounds())) {
i = i+10; s.remove(a3);
ySpeed = -ySpeed;
try { m(); }
catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a4) && a1.intersects(a4.getBounds())) { i = i+10; s.remove(a4);ySpeed = -ySpeed;
try { m();
} catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a5) && a1.intersects(a5.getBounds())) { i = i+10; s.remove(a5);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a6) && a1.intersects(a6.getBounds())) { i = i+10; s.remove(a6);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a7) && a1.intersects(a7.getBounds())) { i = i+10; s.remove(a7);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a8) && a1.intersects(a8.getBounds())) { i = i+10; s.remove(a8);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); }
} if(s.contains(a9) && a1.intersects(a9.getBounds())) { i = i+10; s.remove(a9);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a10) && a1.intersects(a10.getBounds())) { i = i+10; s.remove(a10);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a11) && a1.intersects(a11.getBounds())) { i = i+10; s.remove(a11);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a12) && a1.intersects(a12.getBounds())) { i = i+10; s.remove(a12);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a13) && a1.intersects(a13.getBounds())) { i = i+10; s.remove(a13);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a14) && a1.intersects(a14.getBounds())) { i = i+10; s.remove(a14);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } } if(s.contains(a15) && a1.intersects(a15.getBounds())) { i = i+10; s.remove(a15);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
if(s.contains(a16) && a1.intersects(a16.getBounds())) { i = i+10; s.remove(a16);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
if(s.contains(a17) && a1.intersects(a17.getBounds())) { i = i+10; s.remove(a17);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
if(s.contains(a18) && a1.intersects(a18.getBounds())) { i = i+10; s.remove(a18);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
if(s.contains(a19) && a1.intersects(a19.getBounds())) { i = i+10; s.remove(a19);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
if(s.contains(a20) && a1.intersects(a20.getBounds())) { i = i+10; s.remove(a20);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
if(s.contains(a21) &&a1.intersects(a21)) { i = i+10; s.remove(a21);ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
if(s.contains(a22) && a1.intersects(a22)) { i = i+10; s.remove(a22); ySpeed = -ySpeed; try { m(); } catch (UnsupportedAudioFileException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (IOException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } catch (LineUnavailableException ex) {
Logger.getLogger(JavaApplication12.cla ss.getName()).log (Level.SEVERE, null, ex); } }
collide(); } public void m() throws UnsupportedAudioFileException, IOException, LineUnavailableException { String a = "chimes.wav"; AudioInputStream aa = AudioSystem.getAudioInputStream(new File (a).getAbsoluteFile()); Clip c = AudioSystem.getClip(); c.open(aa); c.start(); }
}
public final void fun() {
a3 = new Rectangle2D.Double(20,15,100,20);
a4 = new Rectangle2D.Double(150,15,100,20);
a5 = new Rectangle2D.Double(280,15,100,20);
a6 = new Rectangle2D.Double(400,15,100,20);
a7 = new Rectangle2D.Double(530,15,100,20);
a8 = new Rectangle2D.Double(20,50,100,20);
a9 = new Rectangle2D.Double(150,50,100,20);
a10 = new Rectangle2D.Double(280,50,100,20);
a12 = new Rectangle2D.Double(400,50,100,20);
a11 = new Rectangle2D.Double(530,50,100,20);
a13 = new Rectangle2D.Double(20,85,100,20);
a14 = new Rectangle2D.Double(150,85,100,20);
a15 = new Rectangle2D.Double(280,85,100,20);
a16 = new Rectangle2D.Double(400,85,100,20);
a17 = new Rectangle2D.Double(530,85,100,20);
a18 = new Rectangle2D.Double(20,120,100,20);
a19 = new Rectangle2D.Double(150,120,100,20);
a20 = new Rectangle2D.Double(280,120,100,20);
a21 = new Rectangle2D.Double(400,120,100,20);
a22 = new Rectangle2D.Double(530,120,100,20);
s.add(a3); s.add(a4); s.add(a5); s.add(a6);
s.add(a7); s.add(a8); s.add(a9); s.add(a10);
s.add(a11); s.add(a12);
s.add(a13); s.add(a14); s.add(a15); s.add(a16);
s.add(a17); s.add(a18);
s.add(a19); s.add(a20); s.add(a21); s.add(a22); }
public void collide() {
if(a2.intersects(a1.getBounds())) {
xSpeed = xSpeed; ySpeed = -ySpeed;
} }
public static void main(String[] args) {
// Run GUI codes in Event-Dispatching thread for thread safety
SwingUtilities.invokeLater(new Runnable() {
@Override public void run() {
new JavaApplication12(); // Let the constructor do the job
}
});
}
}
//所有导入都在此处进行/**通过自定义线程反弹球（动画）*/
公共类JavaApplication12扩展JFrame实现KeyListener{
//定义命名常量
专用静态最终整型画布宽度=640；
专用静态最终整型画布高度=600；
私有静态最终整数更新间隔=10；
毫秒整数xx=200；整数yy=500；
形状a1；形状a2；浮点das[]={10.0f}；整数f=20；
布尔r=真；
Font Font=新字体（“Arial”，Font.ROMAN_基线，f）；
基本行程颜色=新的基本行程（10，基本行程圆盖，基本行程连接斜面，10.0f，das，0.0f）；
GradientPaint破折号=新的GradientPaint（0,0，颜色。蓝色，100,0，颜色或青色）；
矩形2D a3；
矩形2D a12；
矩形；
矩形；
矩形2D a6；
矩形2D a7；
矩形2D a8；
矩形2D a9；
矩形2D a10；
矩形2D a11；矩形2D a13；
矩形2D a14；
矩形2D a15；矩形2D a16；
矩形2D a17；矩形2D a18；
矩形2D a19；矩形2D a20；
矩形2D a21；矩形2D a22；
矩形2D a23；
矩形2D a25；
ArrayList s=新的ArrayList（）；
颜色c2=颜色。红色；
私有DrawCanvas；//绘图画布（扩展JPanel）
//运动对象的属性
//左上角（x，y）
私有整数x=200；
私人int y=480；
//宽度和高度
私有整数大小=20；
//x和y方向上的移动速度
私有int xSpeed=3；
//x和y中每一步的位移
私人互联网速度=5；
/**构造函数来设置GUI组件*/
公共JavaApplication12（）{
画布=新的DrawCanvas（）；
setPreferredSize（新维度（画布宽度、画布高度））；
这个.setContentPane（画布）；
此.setDefaultCloseOperation（关闭时退出）；
这个包（）；
这是setTitle（“弹跳球”）；
this.setVisible（true）；addKeyListener（this）；
乐趣（）；
}
Thread updateThread=new Thread（）{@Override public void run（）{
while（r）{update（）；//更新（x，y）位置
repaint（）；//刷新JFrame。回调paintComponent（）
尝试{//延迟并给其他线程一个运行的机会
Thread.sleep（更新间隔）；//毫秒
}catch（InterruptedException忽略）{}
};
/**更新移动对象的（x，y）位置*/
public void update（）{
x+=x速度；y+=y速度；
如果（x>CANVAS|u WIDTH-size | x<0）{xSpeed=-xSpeed；}
如果（y>CANVAS_HEIGHT-80 | | y<0）{ySpeed=-ySpeed；}
}
@重写公共void keyTyped（KeyEvent ke）{}
@凌驾
@SuppressWarnings（{“弃用”、“弃用”}）
按下公共无效键（KeyEvent ke）{
int keycode=ke.getKeyCode（）；
如果（keycode==KeyEvent.VK_LEFT）{xx=xx-15；}
如果（keycode==KeyEvent.VK_SPACE）{
如果（r==true）{
//r=假；
updateThread.start（）；
}
}
如果（keycode==KeyEvent.VK_ESCAPE）{}
如果（keycode==KeyEvent.VK_RIGHT）{xx=xx+15；}
}
@覆盖公共无效密钥释放（KeyEvent ke）{
//抛出新的UnsupportedOperationException（“尚未支持”）；
}
/**DrawCanvas（内部类）是用于自定义绘图的JPanel*/
类DrawCanvas扩展了JPanel{
私有静态最终长serialVersionUID=1L；
int i=0；
int-liv=3；
@凌驾
public void paintComponent（Graphics g）{super.paintComponent（g）；//绘制父对象的背景Graphics2D=（Graphics2D）g；
a1=新的椭圆E2D双精度（x，y，尺寸，尺寸）；
d、 抽绳（0540640540）；
对于（矩形：s）{
d、 设定行程（颜色）；
//d、 设置油漆（破折号）；
d、 抽签（r）；
}
a25=新矩形2D.双（05401000,10）；
d、 抽签（a25）；
挫折地面（颜色：白色）；
d、 setColor（Color.BLUE）；
a2=新的圆形矩形2D.双（xx，yy，120,10,20,20）；
d、 填充（a1）；d.设置油漆（c2）；
d、 填写（a2）；d.设置字体（font）；
d、 抽绳（分数：+i，5575）；
d、 抽绳（寿命：+liv，550575）；
if（a1.相交（a25.getBounds（）））{
如果（liv>0）{liv=liv-1；}
如果（liv==0）{//JOptionPane.showMessageDialog（null，“，”，0）；
} }
如果（s.contains（a3）&&a1.intersects（a3.getBounds（））{
i=i+10；s.移除（a3）；
ySpeed=-ySpeed；
试试{m（）；}
捕获（不支持DaudioFileException ex）{
Logger.getLogger（JavaApplication12.cla ss.getName（））.log（Level.SEVERE，null，ex）；}catch（IOException ex）{
Logger.getLogger（JavaApplication12.cla ss.getName（））.log（Level.SEVERE，null，ex）；}catch（LineUnavailableException ex）{
Logger.getLogger（JavaApplication12.cla ss.getName（））.log（Level.SEVERE，null，ex）；}}if（s.contains（a4）和&a1.intersects（a4.getBounds（））{i=i+10；s.remove（a4）；ySpeed=-ySpeed；
试试{m（）；
}捕获（不支持DaudioFileException ex）{
Logger.getLogger（JavaApplication12.cla ss.getName（））.log（Level.SEVERE，null，ex）；}catch（IOException ex）{
Logger.getLogger（JavaApplication12.cla ss.getName（））.log（Level.SEVERE，null，ex）；}catch（LineUnavailableException ex）{
//in Foo class
synchronized void doStuffAndWait() throws InterruptedException {
//do stuff
while(!someCondition) {
wait();
System.out.println("I woke up!");
}
//in Bar class;
synchronized void wakeFooUp(Foo foo){
foo.someCondition = true;
foo.notify();
}
JavaApplication12 extends JFrame implements KeyListener {
...
AtomicBoolean is_running(true);
...
Thread updateThread = new Thread() {
@Override public void run() {
while (r) {
synchronized(is_running) {
if(!is_running.get()) {
is_running.wait();
continue;
}
}
update(); // update the (x, y) position
repaint(); // Refresh the JFrame. Called back paintComponent()
try { // Delay and give other thread a chance to run
Thread.sleep(UPDATE_INTERVAL); //milliseconds
} catch (InterruptedException ignore) {}
}
}
};
...
@SuppressWarnings({"deprecation", "deprecation"}) public void keyPressed(KeyEvent ke) {
...
} if(keycode == KeyEvent.VK_ESCAPE) {
synchronized(is_running)
is_running.set(!is_running.get());
is_running.notify_all();
}
}
...
}