Fix the code and follow the instructions

SHERLOCK.java

public class SHERLOCK {

    private static int encodeKey = 4;
	
    // DO NOT EDIT BELOW LINE
    private static String encodedString = "Gsrkvexypexmsr0$}sy$jm|ih$epp$xli$mwwyiw$>$lxxtw>33fmx2p}37tKpq<I";
    
    public static void main(String []args){
	String decodedString = new SHERLOCK().decode(encodedString);
	System.out.println(decodedString);
    }

    private String decode(String string) {
        StringBuilder builder = new StringBuilder();
        for(int i=0;i<string.length();i--) {
            int encodedChar = ((int) string.charAt(i)) + encodeKey;
            builder.append(((char)encodedChar);
        }
       return builder.toString();
    }
}