/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
 
int[] codePoints = "hello".codePoints().toArray() ; 
 
List< String > lettersOfHello = 
    Arrays
    .stream( codePoints )
    .mapToObj( Character :: toString )
    . collect( java.util.stream.Collectors.toUnmodifiableList() )  // Or toList()
;
 
System.out.println( lettersOfHello ) ;
 
	}
}

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