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Java example source code file (Test8020215.java)

This example Java source code file (Test8020215.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, list, namedobject, namedobjectlist, runtimeexception, string, test8020215, util

The Test8020215.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.
 */

/*
 * @test
 * @bug 8020215
 * @summary Different execution plan when using JIT vs interpreter
 * @run main Test8020215
 */

import java.util.ArrayList;
import java.util.List;

public class Test8020215 {
    public static class NamedObject {
        public int id;
        public String name;
        public NamedObject(int id, String name) {
            this.id = id;
            this.name = name;
        }
    }

    public static class NamedObjectList {
        public List<NamedObject> namedObjectList = new ArrayList();

        public NamedObject getBest(int id) {
            NamedObject bestObject = null;
            for (NamedObject o : namedObjectList) {
                bestObject = id==o.id ? getBetter(bestObject, o) : bestObject;
            }
            return (bestObject != null) ? bestObject : null;
        }

        private static NamedObject getBetter(NamedObject p1, NamedObject p2) {
            return (p1 == null) ? p2 : (p2 == null) ? p1 : (p2.name.compareTo(p1.name) >= 0) ? p2 : p1;
        }
    }

    static void test(NamedObjectList b, int i) {
        NamedObject x = b.getBest(2);
        // test
        if (x == null) {
            throw new RuntimeException("x should never be null here! (i=" + i + ")");
        }
    }

    public static void main(String[] args) {
        // setup
        NamedObjectList b = new NamedObjectList();
        for (int i = 0; i < 10000; i++) {
            b.namedObjectList.add(new NamedObject(1, "2012-12-31"));
        }
        b.namedObjectList.add(new NamedObject(2, "2013-12-31"));

        // execution
        for (int i = 0; i < 12000; i++) {
            test(b, i);
        }
        System.out.println("PASSED");
    }
}

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