/* 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
	{
		String text = "RHKKA";
		Map<Character, Character> map = new HashMap<>();
		map.put('R', 'H');
		map.put('H', 'E');
		map.put('K', 'L');
		map.put('A', 'O');
		char[] chars = text.toCharArray();
		for (int i = 0; i < chars.length; i++) {
		    chars[i] = map.get(chars[i]);
		}
		String result = String.valueOf(chars);
		System.out.println(result.toString());//HELLO
	}
}

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