Java tutorial
//package com.java2s; /** * Copyright Microsoft Corporation * * 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.ByteArrayInputStream; import java.util.Random; public class Main { public static ByteArrayInputStream getRandomDataStream(int length) { final Random randGenerator = new Random(); final byte[] buff = new byte[length]; randGenerator.nextBytes(buff); return new ByteArrayInputStream(buff); } }