Advanced API (multithreading)

Not all programming languages support multithreading
        Multithreading is actually equivalent to a robot （ Automatically handle things ）
        
         A few key words
        1. multitasking
         Self righteous to deal with multiple things at the same time
        
        2. Program
         Still , Example ---QQ   installation is complete
        
        3. process
         Dynamic , When the program is opened by double clicking , The process will appear .
        
        4. Threads
         A thread is an execution unit path in a process .（ The process of doing something ）
        
         summary ：
         A program has one or more processes
        A process has at least one thread or multiple threads .
    
         Program closed --- The process will shut down
         Thread shutdown --- The process will not shut down
        
        1. One Java The program has at least 2 Threads   Customize
        (1) The main thread --- effect --- Perform the operation
        (2)gc Threads --- effect --- Recycling waste

The core of multithreading ： Automatically complete things .

Multithreading comes from lang package
         Multithreaded objects ：Thread
        
stay Java There are ways to implement multithreading in the program 2 Kind of
 1. Inherit Thread

rewrite run Method

Custom thread inheritance Thread after , If you want to implement some operations -- Must be in the run Method to perform these so-called operations .

2. Realization Runnable Interface

Custom class implementation Runnable Interface must override all abstract methods in the interface

implements Runnable{
    
    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {
            System.out.println(i+"---- Custom thread "+Thread.currentThread().getName());
        }
    }

matters needing attention ： If the thread is implemented Runnable Interface   To open, you must use Thread Class call start.
        MyF mf = new MyF();
        Thread t = new Thread(mf);
         t.setPriority(10);// Priority
         t.start();// Start the custom thread manually