The main content learned today:
1.获取线程相关信息
2.线程的优先级
3.线程的串行
4.线程休眠
Get thread-related information:
Thread类中提供了一个名为currentThread()的静态方法。
将这个方法写入某个线程就可以获得该线程的对象的引用。
getName()方法可以用来获得线程对象的名称。
The priority of the thread:
优先级顾名思义谁的优先级高就先调用谁。
我们用数字1~10来表示优先级。
主线程的缺省优先级默认是5，子线程的优先级与父线程有相同的优先级。
getPriority()获得当前线程对象的优先级。
setPriority()设置当前线程对象的优先级。
优先级的静态整型常量：
Thread.MIN_PRIORITY; 优先级为1
Thread.NORM_PRIORITY; 优先级为5
Thread.MAX_PRIORITY; 优先级为10
Serial of threads:
就像串联电路一样，一个线程需要前一个线程运行完毕的结果才能运行时，就出现了了线程串行化这种东西。
join()方法可以使调用它的线程先执行完毕。
线程串行相关方法：
public final void join()
public final void join(long millis)
public final void join(long millis, int nonas)
Thread sleep:
休眠方法有：
public static void sleep(long millis)
public static void sleep(long millis, int nanos)
sleep()方法提供的暂停时间不够精确，要精确一点的话用上面第二种方法。
ThreadTest02 class (test to obtain thread information, priority):
package LessonForThread03;
class Thread01 extends Thread
{
public void run()
{
Thread t1 = Thread.currentThread();
t1.setName("ZLM");
System.out.println("Thread's Name:"+t1.getName()+" Thread's ID:"
+t1.getId()+" Thread's priority:"+t1.getPriority());
}
}
class Thread02 implements Runnable
{
@Override
public void run()
{
Thread t2 = Thread.currentThread();
System.out.println("Thread's Name:"+t2.getName()+" Thread's ID:"
+t2.getId()+" Thread's priority:"+t2.getPriority());
}
}
public class ThreadTest02
{
public static void main(String[] args)
{
Thread main_thread = Thread.currentThread();
System.out.println("Thread's Name:"+main_thread.getName()+" Thread's ID:"
+main_thread.getId()+" Thread's priority:"+main_thread.getPriority());
//---------------------------------------------------------------------------------------------------
Thread01 t11 = new Thread01();
t11.setPriority(Thread.MAX_PRIORITY);
t11.start();
//---------------------------------------------------------------------------------------------------
Thread02 t21 = new Thread02();
Thread t1 = new Thread(t21,"ZYH");
t1.start();
//---------------------------------------------------------------------------------------------------
}
}
ThreadTest03 class (test serial and hibernation):
package LessonForThread03;
class MyThread01 extends Thread
{
@Override
public void run()
{
int i;
for (i=0; i<10; i++)
{
try
{
Thread.sleep(200);
System.out.println("This is MyThread01 run number ->" + i);
} catch (InterruptedException e)
{
e.printStackTrace();
}
}
}
}
class MyThread02 implements Runnable
{
@Override
public void run()
{
int i;
for (i=0; i<10; i++)
{
try
{
Thread.sleep(200);
System.out.println("This is MyThread02 run number ->" + i);
} catch (InterruptedException e)
{
e.printStackTrace();
}
}
}
}
public class ThreadTest03
{
public static void main(String[] args)
{
int i;
MyThread01 mt1 = new MyThread01();
try
{
mt1.start();
mt1.join();//先执行完MyThread01线程再去执行别的线程。
} catch (InterruptedException e1)
{
e1.printStackTrace();
}
//----------------------------------------------------------------------------------
MyThread02 mt2 = new MyThread02();
Thread t1 = new Thread(mt2);
try
{
t1.start();
t1.join();
} catch (InterruptedException e1)
{
e1.printStackTrace();
}
//----------------------------------------------------------------------------------
for (i=0; i<10; i++)
{
try
{
Thread.sleep(200);
System.out.println("This is MainThread run number ->" + i);
} catch (InterruptedException e)
{
e.printStackTrace();
}
}
}
}
本篇部分文字来源于：
咕嘟咖啡杨海滨老师 — 《java编程语言高级特性》
在这里十分感谢老师能够给我带来学习的激情。
2020.10.21
可以转载我的学习日记但请注明出处,谢谢。
本文章是本人学习笔记，不进行任何商用！也请别拿去商用！只为记录本人学习历程。
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