개발이 하고 싶어요

import java.io.UnsupportedEncodingException;

public class JavaUnicodeEncoder {
    public static String decode(final String input) throws UnsupportedEncodingException {
    	  String[] arr = input.replace("\\","").split("u");
    	  StringBuilder result = new StringBuilder();
    	  for(String  str :arr){
    		  if(str.length()!=0) {
    			  int hex = Integer.parseInt(str, 16);
    			  result.append((char)hex);
    		  }
    	  }
    	  return result.toString();
    }

    public static String encode(String input){
     	  StringBuilder builder = new StringBuilder();
		  for (char c : input.toCharArray()) {
    		  builder.append("\\u" + Integer.toHexString(c | 0x10000).substring(1));
    	  };
	      return builder.toString();
    }
}