test/jdk/java/io/Serializable/resolveClass/deserializeButton/Foo.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @bug 4413434
 * @summary Verify that class loaded outside of application class loader is
 *          correctly resolved during deserialization when read in by custom
 *          readObject() method of a bootstrap class (in this case,
 *          java.util.Vector).
 */

import java.io.*;
import java.util.Vector;

public class Foo implements Runnable {

    static class TestElement extends Object implements Serializable {}

    public void run() {
        try {
            Vector<TestElement> container = new Vector<TestElement>();
            container.add(new TestElement());

            // iterate to trigger java.lang.reflect code generation
            for (int i = 0; i < 100; i++) {
                ByteArrayOutputStream bout = new ByteArrayOutputStream();
                ObjectOutputStream oout = new ObjectOutputStream(bout);
                oout.writeObject(container);
                oout.close();
                ObjectInputStream oin = new ObjectInputStream(
                    new ByteArrayInputStream(bout.toByteArray()));
                oin.readObject();
            }
        } catch (Exception ex) {
            throw new Error(
                "Error occured while (de)serializing container: ", ex);
        }
    }
}