1、sleep(long millis): 指定线程睡眠毫秒数。sleep是静态方法,哪个线程执行sleep方法那么就是哪个线程睡眠
2、currentThread(): 返回当前的线程对象,currentThread是静态方法,哪个线程执行了currentThread()代码就返回那个线程的对象
代码：
public class CustomThread extends Thread {
public static void main(String[] args) {
//创建线程对象
CustomThread customThread = new CustomThread("customThread");
//启动线程
customThread.start();
//currentThread(): 返回当前的线程对象
System.out.println("main线程:" + Thread.currentThread()); //main线程:Thread[main,5,main]
}
@Override
public void run() {
System.out.println("this:" + this); //this:Thread[customThread,5,main]
System.out.println("CustomThread:" + Thread.currentThread()); //CustomThread:Thread[customThread,5,main]
}
public CustomThread(String name) {
super(name);
}
}
截图：
3、getPrority() : 返回当前线程对象的优先级,默认线程的优先级为5
public class CustomThread extends Thread {
public static void main(String[] args) {
//创建线程对象
CustomThread customThread = new CustomThread();
//getPrority(): 返回当前线程对象的优先级,默认线程的优先级为5
System.out.println("自定义线程的优先级:" + customThread.getPriority()); //自定义线程的优先级:5
System.out.println("主线程的优先级为:" + Thread.currentThread().getPriority()); //主线程的优先级为:5
}
}
4、setPrority(int newPriority): 设置线程的优先级
代码：
public class CustomThread extends Thread {
public static void main(String[] args) {
//创建线程对象
CustomThread customThread = new CustomThread();
//优先级的范围是[1,10],优先级的数字越大,优先级越高
customThread.setPriority(10);
//开启线程
customThread.start();
for (int i = 0; i < 10; i++) {
System.out.println(Thread.currentThread().getName() + ":" + i);
}
}
@Override
public void run() {
for(int i = 0; i < 10; i++) {
System.out.println(Thread.currentThread().getName() + ":" + i);
}
}
}
截图：