线程的生命周期:新建，就绪，运行，阻塞，死亡
public class Demo01 {
/**
* 线程的生命周期:
*
*/
public static void main(String[] args) {
MyT1 myt1=new MyT1();
Thread t1=new Thread(myt1,"aaa");
Thread t2=new Thread(myt1,"bbb");
for(int i=1;i<1000;i++)
{
if(i==100)
{
t1.start();
t2.start();
}
System.out.println(Thread.currentThread().getName()+"---i="+i);
}
}
static class MyT1 implements Runnable{
@Override
public void run() {
for(int s=0;s<1000;s++)
{
System.out.println(Thread.currentThread().getName()+"----s="+s);
}
}
}
}
创建不断的线程对当前屏幕进行截屏
public class Demo02 extends JFrame {
/**
* 创建不断的线程截屏
*
*/
private boolean isrun=false;
private JButton but=new JButton("start");
private int step=1;
private CaptureScreen sc=null;
public Demo02()
{
super("Demo02");
//组件，弹出来的小方框的宽度和高度
this.setSize(400,300);
this.setLocation(200,200);
this.add(but);
//设置该组件是否为可见的
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//建立一个监听事件
but.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if(isrun)
{
isrun=false;
sc.interrupt();
but.setText("start");
}
else
{
isrun=true;
sc=new CaptureScreen();
sc.start();
but.setText("stop");
}
}
});
}
class CaptureScreen extends Thread {
Toolkit tool = Toolkit.getDefaultToolkit();
Dimension dim = null;
Robot robot = null;
Rectangle rec = null;
@Override
public void run() {
while (isrun) {
try {
dim = tool.getScreenSize();
robot = new Robot();
//构造一个新的Rectangle，左上角为(0,0),其宽度和高度右
//Dimension参数指定
rec = new Rectangle(dim);
BufferedImage img = robot.createScreenCapture(rec);
System.out.println(img.getRGB(23, 23));
ImageIO.write(img, "jpg", new File("F:\\imag" + (step++) + ".jpg"));
Thread.sleep(300);
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (AWTException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
new Demo02();
}
}