Issues with Characters & Strings

Question

Cant quite convert these funny characters into some string or chars.Ive tried almost everything: toString, charValue, charAt, String.valueOf(),charArray(), nothing is working at this point,and I need help.
     public static void main(String args[]){
          randomOps ro = new randomOps();
          for(int i = 0; i < 4; i++){
               char[] chars =  ro.randomOperators();
               String string = String.valueOf(chars);
               System.out.println("char operators are:" + string);
          }Here's the output that Im getting:
C:\Java>java randomOps
char operators are:?? &#9786;
char operators are:&#9787;&#9787;&#9786;
char operators are: &#9787;&#9787;&#9787;
char operators are:   ??

Answer 1

Here it is:
public char[] randomOperators() {
               Random random = new Random();
               char[] randomChar = new char[4];
                              for(int i = 0; i < randomChar.length; i++ ){
                                        char[] chars = new char[]{'+','-','/','*'};
                    //int r = random.nextInt(chars.length);
                    randomChar[i] = (char)random.nextInt(4);
                                        //randomChar = chars[r];
                                        //System.out.println(randomChar);
                    return randomChar;
}