使用Runnable，配合Thread创建线程

package cn.itcast.test;

import lombok.extern.slf4j.Slf4j;

@Slf4j(topic = "c.Test2")
public class Test2 {
    public static void main(String[] args) {
        Runnable r = new Runnable() {
            @Override
            public void run() {
               log.debug("running");
            }
        };

        Thread t = new Thread(r, "t2");

        t.start();
    }
}

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java8以后，可以使用lambda精简代码