codewars068 - Convert string to camel case

Instructions

https://www.codewars.com/kata/517abf86da9663f1d2000003/train/java

Solution:

import java.lang.StringBuilder;
class Solution{

  static String toCamelCase(String s){

		String[] arr = s.split("-|_");
		StringBuilder sb = new StringBuilder();
		sb.append(arr[0]);
		for (int i = 1; i < arr.length; i++) {

			sb.append(Character.toUpperCase(arr[i].charAt(0)));
			sb.append(arr[i].substring(1));
		}
		return sb.toString();
	
  }
}

Sample Test:

import org.junit.Test;
import static org.junit.Assert.assertEquals;
import org.junit.runners.JUnit4;

public class SolutionTest {
    @Test
    public void testSomeUnderscoreLowerStart() {
      String input = "the_Stealth_Warrior";
      System.out.println("input: "+input);      
      assertEquals("theStealthWarrior", Solution.toCamelCase(input));
    }
    @Test
    public void testSomeDashLowerStart() {
      String input = "the-Stealth-Warrior";
      System.out.println("input: "+input);      
      assertEquals("theStealthWarrior", Solution.toCamelCase(input));
    }
}