スモールスタートJava8 Stream API ref: http://qiita.com/tk3fftk/items/9faaabee4e88547bf3d3

file0.java

for(int i=0;i<100;i++){
  System.out.println(i);
}

file1.java

IntStream intStream = IntStream.range(0, 100);
intStream.forEach(i -> {
  System.out.println(i);
});

file2.java

// List
List<String> list = Arrays.asList("a","b","c");
for(String s: list){
  System.out.println(s);
}

// 配列
String[] array = {"a", "b", "c"};
for(String s: array){
  System.out.println(s);
}

file3.java

// List
List<String> list = Arrays.asList("a","b","c");
Stream<String> listStream = list.stream();
listStream.forEach(s -> {
  System.out.println(s);
});

// 配列
String[] array = {"a", "b", "c"};
// どちらも出来るものは同じ
Stream<String> arrayStream01 = Arrays.stream(array);
Stream<String> arrayStream02 = Stream.of(array);

arrayStream01.forEach(s -> {
  System.out.println(s);
});

arrayStream02.forEach(s -> {
  System.out.println(s);
});

file4.java

IntStream intStream = IntStream.range(0, 100).parallel();
Stream<String> listStream = list.stream().parallel();