Java example source code file (FileMap.java)

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Java - Java tags/keywords

file, filemap, inputstream, net, network, runtimeexception, string, unexpected, url

The FileMap.java Java example source code

/*
 * Copyright (c) 2003, 2006, 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 4871490
 * @summary URLClassLoader cannot load class which is in added path
 */

import java.net.*;
import java.io.*;

public class FileMap {
    public static void main(String[] args) {
        try {
            File f = File.createTempFile("test", null);
            f.deleteOnExit();
            String s = f.getAbsolutePath();
            s = s.startsWith("/") ? s : "/" + s;
            URL url = new URL("file://localhost"+s);
            InputStream in = url.openStream();
            in.close();
            url = new URL("file://LocalHost" + s);
            in = url.openStream();
            in.close();
        } catch (java.io.FileNotFoundException fnfe) {
            throw new RuntimeException("failed to recognize localhost");
        } catch (Exception ex) {
            throw new RuntimeException("Unexpected exception: " + ex);
        }
    }
}