java--threading and multi-threaded graphics

A single-task flow in a "thread" Java program. We do this by placing each task in a relatively separate thread. Main is the main thread

Concurrent completes multiple tasks at the same time. Program execution steps are sequential, but many times we need to deal with a problem in parallel instead of dealing with a problem sequentially
"Multithreaded" threads are also considered objects, multithreading refers to multiple thread objects
"Thread-supported classes in the API" Java.lang.Thread. The object of the thread class is the threading object
Practice one, initialize thread objects, print threads

Package Pkg3;public class Test3 implements runnable{   Thread Th1;   Public Test3 () {//2       th1=new thread (this);//2-1 initialized Thread Object       th1.start ();//2-2 started the thread object and automatically called the Run method   }   public static void Main (string[] args) {       new test3 ();//1. Starting from the main thread, calling construction method   } @Overridepublic void Run () {    //3// TODO auto-generated Method Stub    System.out.println ("thread ran");//3-1 print Thread, "Run"}}

Practice the life cycle of a thread: new, runnable, not runnable, dead

Package Pkg3;public class Test3 implements runnable{   Thread Th1;   Public Test3 () {//2       th1=new thread (this);//2-1 initialized Thread Object       th1.start ();//2-2 started the thread object and automatically called the Run method   }   public static void Main (string[] args) {       new test3 ();//1. Starting from the main thread, calling construction method   } @Overridepublic void Run () {    //3// TODO auto-generated Method Stub while    (True) {    System.out.println ("thread ran"),//3-1 print thread, "run"    try {        Th1.sleep (500);//Force Sleep 500 MS, enter non-running status not runnable (sleep, jam, queue)    } catch (Interruptedexception e) {        //TODO Auto-generated Catch block        e.printstacktrace ();}}}    

Practice three, multithreading

Package Pkg3;public class Test3 implements runnable{   Thread th1,th2;   Public Test3 () {//2       th1=new thread (this);//2-1 initializes thread object Th2=new thread       (this);       Th1.start ();//2-2 initiates a thread object, automatically calls the Run method       Th2.start ();   }   public static void Main (string[] args) {       new test3 ();//1. Starting from the main thread, calling construction method   } @Overridepublic void Run () {    //3// TODO auto-generated Method Stub    /*while (True) {    System.out.println ("thread ran"),//3-1 print thread, "run"    try {        Th1.sleep (500);//Forced Sleep 500 ms, enter non-running status not runnable (sleep, jam, queue)    } catch (Interruptedexception e) {        //TODO auto-generated catch block        e.printstacktrace ();    }    } *    /thread th=thread.currentthread ();//This method can be used to determine the thread object that enters the Run method    if (th==th1) {        System.out.println (" Thread 1 Ran ");    }    if (th==th2) {        System.out.println ("Thread 2 Ran");}}}