Here you can find the source of stackTraceAsString(Exception ex)
public static String stackTraceAsString(Exception ex)
//package com.java2s; /*//from ww w .j av a 2 s. c om Copyright 2007-2014 CNR-ISTI, http://isti.cnr.it Institute of Information Science and Technologies of the Italian National Research Council See the NOTICE file distributed with this work for additional information regarding copyright ownership 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. */ import java.io.ByteArrayOutputStream; import java.io.PrintStream; public class Main { public static String stackTraceAsString(Exception ex) { ByteArrayOutputStream bos = new ByteArrayOutputStream(); PrintStream ps = new PrintStream(bos); ex.printStackTrace(ps); ps.flush(); ps.close(); return bos.toString(); } public static String stackTraceAsString(Throwable t) { ByteArrayOutputStream bos = new ByteArrayOutputStream(); PrintStream ps = new PrintStream(bos); t.printStackTrace(ps); ps.flush(); ps.close(); return bos.toString(); } }