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74 lines
1.4 KiB
74 lines
1.4 KiB
/*
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* Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.awt.dnd;
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import java.io.OutputStream;
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import java.io.ObjectOutputStream;
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import java.io.IOException;
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import java.io.Serializable;
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/**
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* Tests if an object can truly be serialized by serializing it to a null
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* OutputStream.
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*
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* @since 1.4
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*/
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final class SerializationTester {
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private static ObjectOutputStream stream;
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static {
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try {
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stream = new ObjectOutputStream(new OutputStream() {
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public void write(int b) {}
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});
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} catch (IOException cannotHappen) {
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}
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}
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static boolean test(Object obj) {
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if (!(obj instanceof Serializable)) {
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return false;
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}
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try {
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stream.writeObject(obj);
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} catch (IOException e) {
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return false;
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} finally {
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// Fix for 4503661.
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// Reset the stream so that it doesn't keep a reference to the
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// written object.
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try {
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stream.reset();
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} catch (IOException e) {
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// Ignore the exception.
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}
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}
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return true;
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}
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private SerializationTester() {}
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}
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