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法学我如何过滤以首字母开头的字符串值？
假设以下内容是我们的字符串列表 −
List list = Arrays.asList("Jonny", "David", "Tony", "Jacob", "Smith", "Bravo", "Gayle", "John");现在过滤以首字母开头的字符串值 −
Stream stream = list.stream().filter(name -> name.startsWith("J"));以下是一个过滤以首字母开头的字符串值的示例 −
示例
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class Demo {
public static void main(String[] args) {
List list = Arrays.asList("Jonny", "David", "Tony", "Jacob", "Smith",
"Bravo", "Gayle", "John");
System.out.println("List with elements...");
for (String res : list) {
System.out.print(res+" ");
}
Stream stream = list.stream().filter(name -> name.startsWith("J"));
System.out.println("
Getting strings beginning with letter J =
"+stream.collect(Collectors.toList()));
}
}输出
List with elements... Jonny David Tony Jacob Smith Bravo Gayle John Getting strings beginning with letter J = [Jonny, Jacob, John]
更新时间：30-Jul-2019
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