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How to filter String stream and map to lower case in Java? Perform sort as well.
Let’s say the following is String array, which we have converted to List −
Arrays.asList("DE", "GH", "JK", "MN", "PQ", "RS", "TU", "VW", "XY", "BC")Now filter String stream and map to lower case −
.stream()
.filter(a-> a.startsWith("V"))
.map(String::toLowerCase)To sort now, use the sorted() and display using forEach().
The following is an example to filter string stream and map to lowercase −
Example
import java.util.Arrays;
public class Demo {
public static void main(String[] args) throws Exception {
Arrays.asList("DE", "GH", "JK", "MN", "PQ", "RS", "TU", "VW", "XY", "BC")
.stream()
.filter(a-> a.startsWith("V"))
.map(String::toLowerCase)
.sorted()
.forEach(System.out::println);
}
}Output
Vw
Updated on: 30-Jul-2019
2K+ Views
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