Java中的Stream.Builder build()

Stream.Builder类的build()方法将构建流，并将此构建器转换为已构建状态。语法如下-

Stream<T> build()

以下是实现Stream.Builder类的build()方法的示例-

示例

import java.util.stream.Stream;
public class Demo {
   public static void main(String[] args) {
      Stream.Builder<String> builder = Stream.builder();
      builder.add("Production");
      builder.add("Marketing");
      builder.add("Finance");
      builder.add("Sales");
      builder.add("Operations");
      Stream<String> stream = builder.build();
      stream.forEach(System.out::println);
   }
}

输出结果

Production
Marketing
Finance
Sales
Operations

示例

让我们看一下build()方法的另一个示例，其中我们使用accept()方法向流中添加元素-

import java.util.stream.Stream;
public class Demo {
   public static void main(String[] args) {
      Stream.Builder<String> builder = Stream.builder();
      builder.accept("k");
      builder.accept("l");
      builder.accept("m");
      builder.accept("n");
      builder.accept("o");
      builder.accept("p");
      builder.accept("q");
      builder.accept("r");
      builder.accept("s");
      builder.accept("t");
      Stream<String> stream = builder.build();
      stream.forEach(System.out::println);
   }
}

输出结果

K
l
m
n
o
p
q
r
s
t