Java tutorial
//package com.java2s; public class Main { public static String arrayToString(Object[] array) { StringBuffer str = new StringBuffer(); if (array.length > 1) str.append("{"); for (int i = 0; i < array.length; i++) { if (i != 0) str.append(","); Object o = array[i]; str.append(safeToString(o)); } if (array.length > 1) str.append("}"); return str.toString(); } public static String safeToString(Object o) { return o == null ? "null" : o.toString(); } }