Java 中的 Stream.distinct()
java 8object oriented programmingprogramming更新于 2025/12/8 23:08:17
Stream 类的 distinct() 方法返回一个由该流的不同元素组成的流。其语法如下 −
Stream<T> distinct()
示例
以下是在 Stream 类中实现 distinct() 方法的示例 −
import java.util.*;
public class Demo {
public static void main(String[] args) {
List<Integer> list = Arrays.asList(10, 30, 40, 40, 50, 70, 90, 90, 100);
System.out.println("List = "+list);
System.out.println("Displaying only the distinct elements = ");
list.stream().distinct().forEach(System.out::println);
}
}
输出
List = [10, 30, 40, 40, 50, 70, 90, 90, 100] Displaying only the distinct elements = 10 30 40 50 70 90 100
示例
让我们看另一个例子 −
import java.util.*;
public class Demo {
public static void main(String[] args) {
List<Integer> list = Arrays.asList(10, 30, 40, 40, 50, 70, 90, 90, 100);
System.out.println("List = "+list);
System.out.println("Count of distinct elements = "+(list.stream().distinct().count()));
System.out.println("Displaying only the distinct elements = ");
list.stream().distinct().forEach(System.out::println);
}
}
输出
List = [10, 30, 40, 40, 50, 70, 90, 90, 100] Count of distinct elements = 7 Displaying only the distinct elements = 10 30 40 50 70 90 100
