java8新特性

package com.javanew;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class Java8Tester {
    public static void main(String[] args) {
        List<String> names1 = new ArrayList<String>();
        names1.add("Google ");
        names1.add("Runoob ");
        names1.add("Taobao ");
        names1.add("Baidu ");
        names1.add("Sina ");

        List<String> names2 = new ArrayList<String>();
        names2.add("Google ");
        names2.add("Runoob ");
        names2.add("Taobao ");
        names2.add("Baidu ");
        names2.add("Sina ");

        Java8Tester tester = new Java8Tester();

        System.out.println("使用 Java 7 语法: ");
        tester.sortUsingJava7(names1);
        System.out.println(names1);
        //[Baidu , Google , Runoob , Sina , Taobao ]

        System.out.println("使用 Java 8 语法: ");
        tester.sortUsingJava8(names2);
        System.out.println(names2);
        //[Baidu , Google , Runoob , Sina , Taobao ]
    }

    // 使用 java 7 排序
    private void sortUsingJava7(List<String> names) {
        Collections.sort(names, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                return o1.compareTo(o2);
            }
        });
    }

    // 使用 java 8 排序
    private void sortUsingJava8(List<String> names) {
        Collections.sort(names,(s1,s2)->s1.compareTo(s2));
    }
}

使用 Java 7 语法: 
[Baidu , Google , Runoob , Sina , Taobao ]
使用 Java 8 语法: 
[Baidu , Google , Runoob , Sina , Taobao ]