Here you can find the source of indent(String str, String indent)
public static String indent(String str, String indent)
//package com.java2s; /*/* w w w . ja v a2s . c om*/ * StringUtil.java * * Copyright (C) 2009-12 by RStudio, Inc. * * Unless you have received this program directly from RStudio pursuant * to the terms of a commercial license agreement with RStudio, then * this program is licensed to you under the terms of version 3 of the * GNU Affero General Public License. This program is distributed WITHOUT * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT, * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details. * */ public class Main { public static String indent(String str, String indent) { if (isNullOrEmpty(str)) return str; return indent + str.replaceAll("\n", "\n" + indent); } public static boolean isNullOrEmpty(String val) { return val == null || val.length() == 0; } }