Java tutorial
//package com.java2s; public class Main { private static final String ANDROID_BASE_DIR = "androidBaseDir"; private static void checkBaseDirValue(String baseDir) { if (baseDir.contains("/../")) { throw new IllegalArgumentException(ANDROID_BASE_DIR + " can't have \"..\" symbols"); } if (baseDir.startsWith("../")) { throw new IllegalArgumentException(ANDROID_BASE_DIR + " can't starts with ..\" symbol"); } if (baseDir.contains("/./")) { throw new IllegalArgumentException(ANDROID_BASE_DIR + " can't have \".\" symbols"); } if (baseDir.contains("/./")) { throw new IllegalArgumentException(ANDROID_BASE_DIR + " can't have \".\" symbols"); } } }