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ProGuard is a free Java class file shrinker, optimizer, and obfuscator. It removes unused classes, fields, methods, and attributes. It then optimizes the bytecode. It then renames the remaining classes, fields, and methods using short meaningless names. Finally, it preverifies the processed code for Java 6 or for Java Micro Edition.

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/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification
 *             of Java bytecode.
 *
 * Copyright (c) 2002-2007 Eric Lafortune ([email protected])
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program 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 for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.io;

import java.io.*;

/**
 * This interface describes a data entry, e.g. a ZIP entry or a file.
 *
 * @author Eric Lafortune
 */
public interface DataEntry
{
    /**
     * Returns the name of this data entry.
     */
    public String getName();


    /**
     * Returns an input stream for reading the content of this data entry.
     */
    public InputStream getInputStream() throws IOException;


    /**
     * Closes the previously retrieved InputStream.
     */
    public void closeInputStream() throws IOException;


    /**
     * Returns the parent of this data entry, or null if it doesn't
     * have one.
     */
    public DataEntry getParent();
}