Advanced API (multithreading 02)

Multithreaded life cycle （ The illustration ）
Common methods of multithreading
Case study

    public static void main(String[] args) {
         The current program has 2 Thread thread main Threads  gc Threads
         demand ： Open up a custom thread
        
         Create a custom thread
        Thread_01 t1 = new Thread_01();
        t1.start();// Open thread
        
        Multithreaded life cycle
        1. New state
            When a thread is instantiated   MyThread mt = new MyThread();
        2. Operational state （ Ready state ）
           mt.start();   Not run immediately , Just have the qualification to run , Waiting for preemption CPU Resources for .
       3. Running state
            When multiple threads can run again , One of them is selected , Directly reach the running state
       4. Blocked state , Waiting in line , Lock pool status
            The thread calls some specific methods to make the thread realize some requirements
       Thread.sleep();
       5. Death state
           run Method ,main,stop( Not recommended )

Multiple threads do the same thing Use Runnable Instead, use Thread

System.out.println(" Custom thread : "+Thread.currentThread().getName());
    }

/*
         *     1. multitasking / Program / process / Threads / Multithreading
         * 
         *     2. Multithreaded implementation
         *         （1） Inherit Thread class
         *             
         *         （2） Realization Runnable Interface
         *             
         *              rewrite run Method , Put all process codes here , To control the operation through threads

/*

Multithreading approach ：

setPriority|getPriority--- Set and get the priority of the thread
Thread.sleep(long millis)--- Thread sleep
wait--- Thread waiting
Thread comity yield
yield--- Thread concession （ Let the present seize cpu Thread exited cup Redo the waiting queue ）
join--- Thread join （ Add more urgent threads , Make the current thread temporarily blocked ）
notify|notifyAll-- Wake up the thread