代码地址
  https://github.com/viakiba/viakiba/tree/master/JavaStreamDemo
参考：
  https://www.ibm.com/developerworks/cn/java/j-lo-java8streamapi/
  http://javarevisited.blogspot.sg/2013/11/java-8-tutorials-resources-and-examples-lambda-expression-stream-api-functional-interfaces.html
  http://www.drdobbs.com/jvm/lambdas-and-streams-in-java-8-libraries/240166818

/**
     *      从 Collection 和数组
     * @param:
     * @return:
     * @author: viakiba
     * @date: 2018/12/25 16:53
     */
    @Test
    public void test1(){
        List<Integer> integers = Arrays.asList(1, 2, 3);

//        integers.stream()
//        integers.parallelStream()

//        Arrays.stream(new int[])

//        Stream<Integer> integerStream = Stream.of(1, 2, 3, 4, 5);

//        Stream<String> lines = BufferedReader.lines();

    }

/**
    *  静态工厂
    * @param:
    * @return:
    * @author: viakiba
    * @date: 2018/12/25 16:57
    */
   @Test
   public void test2(){
//        IntStream range = IntStream.range();

//        Stream<Path> walk = Files.walk();
   }

/**
     *  自己构建
     * @param:
     * @return:
     * @author: viakiba
     * @date: 2018/12/25 16:59
     */
    @Test
    public void test3(){
//        java.util.Spliterator
    }

/**
     *   其他方式
     * @param:
     * @return:
     * @author: viakiba
     * @date: 2018/12/25 17:00
     */
    @Test
    public void test4(){
//        IntStream ints = Random.ints();

//        IntStream stream = BitSet.stream();

//        Stream<JarEntry> stream = JarFile.stream();
    }

/**
 *  List ==> skip / toArray
 */
@Test(testName = "skip")
public void testCollection1(){
    List<String> list = new ArrayList<String>();
    list = Arrays.asList("a","b","c","d");
    Stream<String> stream = list.stream();
    //skip 操作 跳过指定索引前的内容
    Object[] objects = stream.skip(2).toArray();
    System.out.println(objects.length+""+objects[0] +""+objects[1]);
//Stream 不可重复使用 即 不可逆
//        objects = stream.skip(2).toArray();
//        System.out.println(objects.length+""+objects[0] +""+objects[1]);
}

/**
    *  List ==> filter / sorted / min /max / toArray
    */
   @Test(testName = "filter")
   public void testCollection2(){
       List<Integer> list = new ArrayList<Integer>();
       list = Arrays.asList(1,2,8,6,3);
       Integer[] integers = list.stream().filter(n -> n % 2 == 0).toArray(Integer[]::new);
       System.out.println(integers.length+"："+integers[0] +""+integers[1]);

       long count = list.stream().filter(x -> x / 2 == 1).count();
       System.out.println(count);

       List<Student> studentList = new ArrayList<Student>();
       studentList.add(new Student("s1",1));
       studentList.add(new Student("s3",3));
       studentList.add(new Student("s2",2));
       studentList.add(new Student("s5",5));
       studentList.add(new Student("s4",4));

       Student[] students = studentList.stream().filter(n -> n.getAge() < 2).toArray(Student[]::new);
       System.out.println(students[0]);
       for(Student s:students){
           System.out.println(s);
       }
       System.out.println("=====================");
       Student[] students1 = studentList.stream().sorted().toArray(Student[]::new);
       for(Student s:students1){
           System.out.println(s);
       }
       System.out.println("=====================");
       Student students2 = studentList.stream().min(Student::compareTo).get();
       System.out.println(students2);
       System.out.println("=====================");
       Student students3 = studentList.stream().min((x,y) -> {
           if(x.getAge() > y.getAge()){
               return 1;
           }else if(x.getAge() == y.getAge()){
               return 0;
           }else {
               return -1;
           }
       }).get();

       System.out.println(students3);
   }