Transform List of Strings to Upper Case in Java

Let’s first create a List string:

List<String> list = Arrays.asList("David", "Tom", "Ken","Yuvraj", "Gayle");

Now transform the above list to upper case:

list.stream().map(players -> players.toUpperCase())

To display, use forEach():

list.stream().map(players -> players.toUpperCase()) .forEach(players -> System.out.print(players + ""));

The following is an example to transform List string to upper case:

Example

import java.util.Arrays;
import java.util.List;
public class Demo {
   public static void main(final String[] args) {
      List<String> list = Arrays.asList("David", "Tom", "Ken","Yuvraj", "Gayle");
      System.out.print("List = "+list);
      System.out.print("\nUppercase strings = ");
      list.stream().map(players -> players.toUpperCase()) .forEach(players -> System.out.print(players + ""));
   }
}

Output

List = [David, Tom, Ken, Yuvraj, Gayle]
Uppercase strings = DAVID TOM KEN YUVRAJ GAYLE