1         new Thread(new Runnable() {
2             public void run() {
3                 System.out.println("hello world!!!");
4             }
5         }).start();
6
7         // lambda
8         new Thread(()->System.out.println("hello lambda!!!")).start();

 1         List<String> strList = Arrays.asList("zhaojigang","nana","tianya");
 2         //原来的方式
 3         Collections.sort(strList, new Comparator<String>() {
 4             @Override
 5             public int compare(String s1, String s2) {
 6                 return s1.compareTo(s2);
 7             }
 8         });
 9
10         //lambda
11         Collections.sort(strList, (s1, s2)->s1.compareTo(s2));

1         //lambda
2         Collections.sort(strList, (s1, s2)->s1.compareTo(s2));
3         //方法引用
4         Collections.sort(strList, String::compareTo);
5         //lambda
6         strList.forEach(x->System.out.println(x));
7         //方法引用
8         strList.forEach(System.out::println);

 1 public interface LambdaInterface {
 2     //default方法
 3     default void defaultMethod(){
 4         System.out.println("xxxx");
 5     }
 6     //static方法
 7     static void staticMethod(){
 8         System.out.println("xxxx");
 9     }
10 }

1 public class TestInterface implements LambdaInterface{
2     public static void main(String[] args) {
3         LambdaInterface test = new TestInterface();
4         test.defaultMethod();//default方法测试
5
6         LambdaInterface.staticMethod();//static方法测试
7     }
8 }