public static void main(String[] args) {//=============================原始版==========================new Thread(new Runnable() {@Overridepublic void run() {System.out.println("简单的线程编程JDK1.8以前");}}).start();//=====================Lambda可读性强一些================================new Thread(()->{System.out.println("Lambda可读性强一些");}).start();//=====================Lambda简洁一些================================new Thread(()->System.out.println("Lambda简洁一些")).start();}

@FunctionalInterface
public interface Runnable {public abstract void run();
}

public static void testComparatorLambda(){List<Integer> names = Arrays.asList(1, 10, 3, 2,1);//=========================创建一个匿名的比较器对象=====================Collections.sort(names, new Comparator<Integer>() {@Overridepublic int compare(Integer o1, Integer o2) {System.out.println("o1:"+o1+"<>o2:"+o2+"=="+o1.compareTo(o2));return o1.compareTo(o2);}});//==========================使用Lambda=================================Collections.sort(names,(Integer o1,Integer o2)->{System.out.println("o1:"+o1+"<>o2:"+o2+"=="+o1.compareTo(o2));return o1.compareTo(o2);} );System.err.println(names);}

@FunctionalInterface
public interface Comparator<T> {int compare(T o1, T o2);
}

class Apple{private String color;private Integer weight;构造函数get，set
}

interface AppleFilter{boolean validate(Apple apple);
}

public class LambdaAgo {public static void main(String[] args) {List<Apple> apples=Arrays.asList(new Apple("red",120),new Apple("green",189),new Apple("red",110));//===方法一 使用内部类======getAppleFilter(apples,new AppleFilter() {@Overridepublic boolean validate(Apple apple) {return apple.getColor().equals("red");}});//===方法二 使用 Lambda======getAppleFilter(apples,(Apple apple)-> apple.getColor().equals("red"));}public static List<Apple> getAppleFilter(List<Apple> apples,AppleFilter filter){List<Apple> apples2=new ArrayList<Apple>();for(Apple a:apples){if(filter.validate(a)){apples2.add(a);}}System.out.println("getAppleFilter:"+apples2);return apples2;}
}