java自增序列

public class IncrementExample {
    public static void main(String[] args) {
        int count = 0;
        
        // 后缀自增
        System.out.println("Initial value: " + count); // 输出: Initial value: 0
        System.out.println("After post-increment: " + count++); // 输出: After post-increment: 0
        System.out.println("Current value: " + count); // 输出: Current value: 1
        
        // 前缀自增
        count = 0; // 重置count
        System.out.println("Initial value: " + count); // 输出: Initial value: 0
        System.out.println("After pre-increment: " + ++count); // 输出: After pre-increment: 1
        System.out.println("Current value: " + count); // 输出: Current value: 1
        
        // 循环中使用自增
        for (int i = 0; i < 5; i++) {
            System.out.println("Loop iteration: " + i);
        }
    }
}

int a = 5;
int b = (a++) + (++a); // 结果是12，因为先计算(a++)得到5，然后a变为6，再计算(++a)得到7

import java.util.concurrent.atomic.AtomicInteger;

public class ThreadSafeIncrement {
    private AtomicInteger counter = new AtomicInteger(0);

    public void increment() {
        counter.incrementAndGet();
    }

    public int getCounter() {
        return counter.get();
    }
}