java线程类的代码：假设桌面上有100个苹果 每个小朋友一次可以随机拿走1-5个苹果 直到桌面上的苹果全部被拿走为止

以下是一个可能的解决方案，使用Java线程类：

import java.util.concurrent.ThreadLocalRandom;

public class ApplePickingGame {
    private static volatile int applesLeft = 100;

    public static void main(String[] args) {
        for (int i = 0; i < 10; i++) {
            new Thread(new Child(i)).start();
        }
    }

    static class Child implements Runnable {
        private final int id;

        Child(int id) {
            this.id = id;
        }

        @Override
        public void run() {
            while (applesLeft > 0) {
                int applesToPick = ThreadLocalRandom.current().nextInt(1, 6);
                synchronized (ApplePickingGame.class) {
                    if (applesLeft < applesToPick) {
                        applesToPick = applesLeft;
                    }
                    applesLeft -= applesToPick;
                }
                System.out.println("Child " + id + " picked " + applesToPick + " apples. " + applesLeft + " apple(s) left on the table.");
                try {
                    Thread.sleep(100); // wait for other children to pick apples
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                }
            }
        }
    }
}

该程序使用了一个静态的 `applesLeft` 变量来表示桌面上剩余的苹果数目。每个孩子都是一个独立的线程，通过随机数选择要拿走的苹果数目，并使用 synchronized 块来保证线程安全。当桌面上的苹果数目为 0 时，所有孩子都会退出循环并结束线程。