Java Thread - 如何使用JDBC从一个表中选择数据并插入到不同db中的另一个表中...

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

public class Main implements Runnable {

  public static void main(String[] args) throws InterruptedException {
    Main task = new Main();
    int threads = Runtime.getRuntime().availableProcessors();
    ExecutorService pool = Executors.newFixedThreadPool(threads);
    for (int i = 0; i < threads; i++) {
      pool.submit(task);
    }
    pool.awaitTermination(120, TimeUnit.SECONDS);
  }

  public void run() {
    System.out.println("Task running...");
    int i = 0;
    while (true) {
      i++;
    }
  }
}