Java之Stream.concat()使用示例

Stream.concat方法的功能

Stream.concat()
   用于合并两个流

Stream.concat()语法
    concat(Stream<? extends T> a, Stream<? extends T> b)
a:第一流
b:第二流
T:流元素类型

 
import java.util.*;
import java.util.stream.IntStream;
import java.util.stream.Stream;
public class TestClass1 {
   public static void main(String[] args) {
      Stream<String> streamOne = Stream.of("Java");
      Stream<String> streamTwo = Stream.of("Python");
      Stream.concat(streamOne, streamTwo).forEach(val -> System.out.println(val));
   }
} 

import java.util.stream.Collectors;
import java.util.stream.Stream;
import static java.util.stream.Stream.*;
public class Main {
   public static void main(String[] args) {
      Stream<Integer> streamOne = Stream.of(88,89,91);
      Stream<Integer> streamTwo = Stream.of(66,77,111);
      Stream<Integer> streamThree = Stream.of(22,434,333);
      Stream<Integer> streamFour = Stream.of(678,123,801,672);
      Stream<Integer> res = Stream.concat(streamOne, concat(streamTwo, concat(streamThree, streamFour)));
      System.out.println( res.collect(Collectors.tolist()) );
   }
}