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1. InvalidClassException : class invalid for deserialization
I am using SSA parser library in my project. When I invoke main method of one of it's class using command prompt it works fine on my machine. I execute following command from command prompt : java -Xmx800M -cp %1 edu.stanford.nlp.parser.lexparser.LexicalizedParser -retainTMPSubcategories -outputFormat "penn,typedDependenciesCollapsed" englishPCFG.ser.gz %2 But when I tried to use the sam... 
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 /*
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  * Copyright 1996-2006 Sun Microsystems, Inc.  All Rights Reserved.
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  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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  *
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  * This code is free software; you can redistribute it and/or modify it
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  * under the terms of the GNU General Public License version 2 only, as
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  * published by the Free Software Foundation.  Sun designates this
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  * particular file as subject to the "Classpath" exception as provided
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  * by Sun in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * have any questions.
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 */
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package java.io;

Thrown when the Serialization runtime detects one of the following problems with a Class.
  • The serial version of the class does not match that of the class descriptor read from the stream
  • The class contains unknown datatypes
  • The class does not have an accessible no-arg constructor

Author(s):
unascribed
Since:
JDK1.1
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    private static final long serialVersionUID = -4333316296251054416L;

    
Name of the invalid class.

Serial:
Name of the invalid class.
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    public String classname;

    
Report an InvalidClassException for the reason specified.

Parameters:
reason String describing the reason for the exception.
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    public InvalidClassException(String reason) {
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        super(reason);
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    }

    
Constructs an InvalidClassException object.

Parameters:
cname a String naming the invalid class.
reason a String describing the reason for the exception.
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    public InvalidClassException(String cname, String reason) {
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        super(reason);
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         = cname;
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    }

    
Produce the message and include the classname, if present. 
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    public String getMessage() {
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        if ( == null)
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            return super.getMessage();
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        else
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            return  + "; " + super.getMessage();
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    }
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