java-base-maven/test1/src/main/java/tmp.java

import java.nio.file.Files;
import java.util.BitSet;
import java.util.concurrent.*;

public class tmp {
    public static void main(String[] args) throws InterruptedException {
        ThreadPoolExecutor executor = new ThreadPoolExecutor(10,
                20,
                60L,
                TimeUnit.SECONDS,
                new LinkedBlockingQueue<Runnable>(10),
                Executors.defaultThreadFactory(),
                new RejectedExecutionHandler() {
                    @Override
                    public void rejectedExecution(Runnable r, ThreadPoolExecutor executor) {
                        System.out.println(r.toString() + " is discard");
                    }
                }
        );
    }
}