Java优学网Thread类教程：从基础创建到线程安全同步，轻松掌握多线程编程

class MyThread extends Thread {

public void run() {
    System.out.println("线程正在执行");
}

}

// 使用 MyThread thread = new MyThread(); thread.start();

Thread thread = new Thread(() -> {

System.out.println("当前线程：" + Thread.currentThread().getName());

});

thread.start(); // 输出：Thread-0（新线程） // thread.run(); // 输出：main（主线程）

public synchronized void addBalance(int amount) {

balance += amount;

}

public class Counter {

private int value;
private final Object lock = new Object();

public void increment() {
    synchronized(lock) {
        value++;
    }
}

public int get() {
    synchronized(lock) {
        return value;
    }
}

}