There are several implementation methods for java multithreading

Java multi-threading implementation method: 1. Implement the Runnable interface; 2. Inherit the Thread class; 3. Use the Executor framework; 4. Use CompletableFuture; 5. Use the ForkJoin framework. Detailed introduction: 1. Implement the Runnable interface. The Runnable interface in Java has only one method run(). By implementing this interface and rewriting the run() method, you can write multi-threaded execution code in this method, start a thread, etc. wait.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

Java multi-threading can be implemented in the following ways:

1. Implement the Runnable interface: The Runnable interface in Java has only one method run(). By implementing this Interface and override the run() method, where you can write code for multi-thread execution. To start a thread, you need to create an object that implements the Runnable interface, pass it to the constructor of the Thread class, and then call the start() method to start the thread.

public class MyRunnable implements Runnable {  
    public void run() {  
        // 线程执行的代码  
    }  
}  
  
Thread thread = new Thread(new MyRunnable());  
thread.start();

2. Inherit the Thread class: The Thread class in Java itself is also a class that implements the Runnable interface. You can achieve multiple functions by inheriting the Thread class and rewriting its run() method. thread. Similarly, you need to create a Thread object and call the start() method to start the thread.

public class MyThread extends Thread {  
    public void run() {  
        // 线程执行的代码  
    }  
}  
  
MyThread thread = new MyThread();  
thread.start();

3. Use the Executor framework: The Executor framework in Java provides a more flexible multi-threaded programming method that can create and manage multiple threads. By implementing the Executor interface or using the ExecutorService class, you can create and manage thread pools more conveniently. The Executor framework also provides many other functions, such as task scheduling, thread pool management, etc.

ExecutorService executor = Executors.newFixedThreadPool(10); // 创建一个包含10个线程的线程池  
executor.execute(new MyRunnable()); // 提交任务给线程池执行  
executor.shutdown(); // 关闭线程池

4. Use CompletableFuture: Java 8 introduced the CompletableFuture class, which provides a more modern asynchronous programming method. CompletableFuture makes it easy to write asynchronous code and get the results when needed. It also supports advanced features such as chain programming and exception handling.

CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {  
    // 异步执行的代码  
    return "result";  
});  
future.thenAccept(result -> {  
    // 处理异步执行的结果  
    System.out.println(result);  
});

5. Use the ForkJoin framework: The ForkJoin framework in Java provides a parallel computing mechanism based on a work-stealing algorithm, which is suitable for splitting a task into multiple subtasks. Through the ForkJoin framework, tasks can be split into multiple sub-threads for execution and merged after completion. The ForkJoin framework is suitable for scenarios such as processing large-scale data sets or performing complex calculations.

The above are several common ways to implement multi-threading in Java. Each method has its applicable scenarios, advantages and disadvantages. In practical applications, the appropriate method to implement multi-threading should be selected according to specific needs.

The above is the detailed content of There are several implementation methods for java multithreading. For more information, please follow other related articles on the PHP Chinese website!