001/* 002 * Trident - A Multithreaded Server Alternative 003 * Copyright 2014 The TridentSDK Team 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package net.tridentsdk.util; 019 020import jdk.nashorn.internal.ir.annotations.Immutable; 021 022/** 023 * String utilities 024 * 025 * @author The TridentSDK Team 026 * @since 0.3-alpha-DP 027 */ 028@Immutable 029public final class StringUtil { 030 private StringUtil() { 031 } 032 033 /** 034 * A for-loop efficient method for concating strings (or in some cases objects) 035 * 036 * @param objects Objects you wish to concat into a String 037 * @return Built string 038 */ 039 public static String concat(Object... objects) { 040 StringBuilder builder = new StringBuilder(); 041 042 for (Object o : objects) { 043 builder.append(o); 044 } 045 046 return builder.toString(); 047 } 048 049 /** 050 * Checks if a string is a number 051 * 052 * @param str the string to check 053 * @return {@code true} is number parsable 054 */ 055 public static boolean isNumeric(String str) { 056 try { 057 Integer.parseInt(str); 058 } catch (NumberFormatException ex) { 059 return false; 060 } 061 062 return true; 063 } 064}