Java 方法本地压测

import java.util.ArrayList;

import java.util.List;

import java.util.concurrent.CountDownLatch;

import java.util.stream.Collectors;

import cn.hutool.core.date.StopWatch;

public class Test {

public static void main(String[] args) {

StopWatch sw = new StopWatch();

sw.start();

CountDownLatch countDownLatch = new CountDownLatch(1000);

LatchThread latchThread = new LatchThread(countDownLatch);

for (int j = 1; j <= 100; j++) {

new Thread(latchThread, "thread" + j).start();

}

try {

countDownLatch.await();

} catch (InterruptedException e) {

e.printStackTrace();

}

sw.stop();

System.out.println(sw.prettyPrint());

}

}

class LatchThread implements Runnable {

private CountDownLatch latch;

public LatchThread(CountDownLatch l) {

latch = l;

}

@Override

public void run() {

synchronized (this) {

try {

List<String> ss = new ArrayList<>();

ss.add("gewfsdf");

ss.add("hreggd");

ss.add("fwefgfd");

ss.add("f4trhdg");

ss.add("yyyy");

ss.add("sdgdsgs");

ss.add("yydsd");

// ss.removeIf(s -> s.contains("yy"));

ss = ss.stream().filter(s -> !s.contains("yy")).collect(Collectors.toList());

} finally {

latch.countDown();

}

}

}

}