Java 8 –将流转换为列表

ゝ一世哀愁。 2023-02-15 05:14 5阅读 0赞

一个Java 8示例，向您展示如何通过`Collectors.toList`将`Stream`转换为`List`

Java8Example1.java

package com.mkyong.java8;
    
    import java.util.List;
    import java.util.stream.Collectors;
    import java.util.stream.Stream;
    
    public class Java8Example1 {
    
        public static void main(String[] args) {
    
            Stream<String> language = Stream.of("java", "python", "node");
    
            //Convert a Stream to List
            List<String> result = language.collect(Collectors.toList());
    
            result.forEach(System.out::println);
    
        }
    }

输出

java
    python
    node

另一个示例，过滤数字3并将其转换为列表。

Java8Example2.java

package com.mkyong.java8;
    
    import java.util.List;
    import java.util.stream.Collectors;
    import java.util.stream.Stream;
    
    public class Java8Example2 {
    
        public static void main(String[] args) {
    
            Stream<Integer> number = Stream.of(1, 2, 3, 4, 5);
    
            List<Integer> result2 = number.filter(x -> x != 3).collect(Collectors.toList());
    
            result2.forEach(x -> System.out.println(x));
    
    
        }
    }

输出

1
    2
    4
    5

## 参考文献 ##

*  [Java 8收集器JavaDoc][Java 8_JavaDoc]
 *  Java 8 Streams过滤器示例
 *  Java 8 –如何将流转换为数组

标签： [转换][Link 1] [筛选器][Link 2] [Java 8][] [列表][Link 3] [流][Link 4]

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[Java 8_JavaDoc]: https://docs.oracle.com/javase/8/docs/api/java/util/stream/Collectors.html
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