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Java example source code file (Task.java)
The Task.java Java example source code/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ import java.util.ArrayList; import java.util.Enumeration; import java.util.List; import java.util.jar.JarEntry; import java.util.jar.JarFile; import java.util.regex.Matcher; import java.util.regex.Pattern; abstract class Task<T> implements Runnable { private transient boolean working = true; private final List<T> methods; private final Thread thread; Task(List<T> methods) { this.methods = methods; this.thread = new Thread(this); this.thread.start(); } boolean isAlive() { return this.thread.isAlive(); } boolean isWorking() { boolean working = this.working && this.thread.isAlive(); this.working = false; return working; } @Override public void run() { long time = -System.currentTimeMillis(); for (T method : this.methods) { this.working = true; try { for (int i = 0; i < 100; i++) { process(method); } } catch (NoSuchMethodException ignore) { } } time += System.currentTimeMillis(); print("thread done in " + time / 1000 + " seconds"); } protected abstract void process(T method) throws NoSuchMethodException; static synchronized void print(Object message) { System.out.println(message); System.out.flush(); } static List<Class getClasses(int count) throws Exception { String resource = ClassLoader.getSystemClassLoader().getResource("java/lang/Object.class").toString(); Pattern pattern = Pattern.compile("jar:file:(.*)!.*"); Matcher matcher = pattern.matcher(resource); matcher.matches(); resource = matcher.group(1); List<Class classes = new ArrayList<>(); try (JarFile jarFile = new JarFile(resource)) { Enumeration<JarEntry> entries = jarFile.entries(); while (entries.hasMoreElements()) { String name = entries.nextElement().getName(); if (name.startsWith("java") && name.endsWith(".class")) { classes.add(Class.forName(name.substring(0, name.indexOf(".")).replace('/', '.'))); if (count == classes.size()) { break; } } } } return classes; } } Other Java examples (source code examples)Here is a short list of links related to this Java Task.java source code file: |
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