Java ThreadLocal demo

App.java

package net.momoka;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Hello world!
 * 
 */

public class App implements Runnable {

    private static final Logger LOGGER = LoggerFactory.getLogger(App.class);

    private Long operatorId;

    public App(Long operatorId) {
        this.operatorId = operatorId;
    }

    public static void main(String[] args) {
        App app1 = new App(1L);
        App app2 = new App(2L);

        Thread t1 = new Thread(app1);
        Thread t2 = new Thread(app2);

        t1.start();
        t2.start();
    }

    @Override
    public void run() {
        before();
        after();
    }

    private void before() {
        RequestThreadLocal.operatorId.set(this.operatorId);
    }

    private void after() {
        Long _ = RequestThreadLocal.operatorId.get();
        LOGGER.debug("{}", _);
    }
}