| /* |
| * Copyright (c) 2001, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| |
| package java.awt.dnd; |
| |
| import java.io.OutputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.IOException; |
| import java.io.Serializable; |
| |
| /** |
| * Tests if an object can truly be serialized by serializing it to a null |
| * OutputStream. |
| * |
| * @since 1.4 |
| */ |
| final class SerializationTester { |
| private static ObjectOutputStream stream; |
| static { |
| try { |
| stream = new ObjectOutputStream(new OutputStream() { |
| public void write(int b) {} |
| }); |
| } catch (IOException cannotHappen) { |
| } |
| } |
| |
| static boolean test(Object obj) { |
| if (!(obj instanceof Serializable)) { |
| return false; |
| } |
| |
| try { |
| stream.writeObject(obj); |
| } catch (IOException e) { |
| return false; |
| } finally { |
| // Fix for 4503661. |
| // Reset the stream so that it doesn't keep a reference to the |
| // written object. |
| try { |
| stream.reset(); |
| } catch (IOException e) { |
| // Ignore the exception. |
| } |
| } |
| return true; |
| } |
| |
| private SerializationTester() {} |
| } |