Java8 函数式接口（Functional interfaces）

@FunctionalInterface
public interface Runnable {
    /**
     * When an object implementing interface <code>Runnable</code> is used
     * to create a thread, starting the thread causes the object's
     * <code>run</code> method to be called in that separately executing
     * thread.
     * <p>
     * The general contract of the method <code>run</code> is that it may
     * take any action whatsoever.
     *
     * @see     java.lang.Thread#run()
     */
    public abstract void run();
}

package com.java4all.mypoint;

/**
 * Author: yunqing
 * Date: 2018/7/18
 * Description:自定义函数式接口
 */
@FunctionalInterface
public interface MyFuncInter {
    abstract Integer trans();

    public static void get(){
        System.out.println("测试啊");
    }
}