Java tutorial
//package com.java2s; /* * Copyright 2015 Orhan Obut * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * This software contains code derived from the following Android classes: * android.util.Log, android.text.TextUtils. */ import java.io.PrintWriter; import java.io.StringWriter; import java.net.UnknownHostException; public class Main { /** * Copied from "android.util.Log.getStackTraceString()" in order to avoid usage of Android stack * in unit tests. * * @return Stack trace in form of String */ static String getStackTraceString(Throwable tr) { if (tr == null) { return ""; } // This is to reduce the amount of log spew that apps do in the non-error // condition of the network being unavailable. Throwable t = tr; while (t != null) { if (t instanceof UnknownHostException) { return ""; } t = t.getCause(); } StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); tr.printStackTrace(pw); pw.flush(); return sw.toString(); } }