Java实现一个环形计数器(数到最大值后重新从最小值开始计数)

备忘。

public class CircularCounter {

  private final AtomicInteger counter;

  private final int maxValue;

  public CircularCounter(int initialValue, int maxValue) {
    this.counter = new AtomicInteger(initialValue);
    this.maxValue = maxValue;
  }

  public int getAndIncrement() {
    return counter.getAndUpdate(current -> (current + 1) % maxValue);
  }

}