使用多线程实现批处理过程

使用多线程实现批处理过程，将一下数组，按10个一组，每组一个打印数据，并在19个线程都处理完成后输出打印次数 int[]data = new int [100]; for(int i=0;i <100;i++){data[i] =i;}

import java.util.concurrent.CountDownLatch;
 
public class BatchProcessing {
    public static void main(String[] args) {
        int[] data = new int[100];
        for (int i = 0; i < 100; i++) {
            data[i] = i;
        }
 
        int batchSize = 10;
        int numThreads = data.length / batchSize;
 
        CountDownLatch latch = new CountDownLatch(numThreads);
 
        for (int i = 0; i < numThreads; i++) {
            int startIndex = i * batchSize;
            int endIndex = Math.min((i + 1) * batchSize, data.length);
 
            Runnable task = new BatchProcessor(data, startIndex, endIndex, latch);
            Thread thread = new Thread(task);
            thread.start();
        }
 
        try {
            latch.await(); // 等待所有线程完成
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
 
        System.out.println("All threads have completed.");
    }
}
 
class BatchProcessor implements Runnable {
    private int[] data;
    private int startIndex;
    private int endIndex;
    private CountDownLatch latch;
 
    public BatchProcessor(int[] data, int startIndex, int endIndex, CountDownLatch latch) {
        this.data = data;
        this.startIndex = startIndex;
        this.endIndex = endIndex;
        this.latch = latch;
    }
 
    @Override
    public void run() {
        for (int i = startIndex; i < endIndex; i++) {
            System.out.println("Data: " + data[i]);
        }
        latch.countDown(); // 通知主线程任务已完成
    }
}