How to convert an array to comma separated string in java

package com.test;

public class ArrayTest {

public static void main(String[] args) {
ArrayTest arrayTest = new ArrayTest();
arrayTest.arrayJoin();
}

public void arrayJoin() {

String[] arrayToJoin = { “John”, “Peter”, “Tom”, “Scott” };

StringBuilder joinedString = new StringBuilder();
String seperator = “,”;
//System.out.println(“Converting to String “+arrayToJoin.toString());;
for (String value : arrayToJoin) {
joinedString.append(value).append(seperator);
}

System.out.println(“Final Result …….. ” + joinedString);
}
}