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package java.util.jar;

import java.io.IOException;
import java.util.zip.ZipEntry;
import java.security.CodeSigner;
import java.security.cert.Certificate;

This class is used to represent a JAR file entry.
Since:
1.2/**
 * This class is used to represent a JAR file entry.
 *
 * @since 1.2
 */
public class JarEntry extends ZipEntry {
    Attributes attr;
    Certificate[] certs;
    CodeSigner[] signers;

    
Creates a new JarEntry for the specified JAR file entry name. 
Params:
name – the JAR file entry name
Throws:
NullPointerException – if the entry name is null
IllegalArgumentException – if the entry name is longer than
           0xFFFF bytes./**
     * Creates a new {@code JarEntry} for the specified JAR file
     * entry name.
     *
     * @param name the JAR file entry name
     * @throws    NullPointerException if the entry name is {@code null}
     * @throws    IllegalArgumentException if the entry name is longer than
     *            0xFFFF bytes.
     */
    public JarEntry(String name) {
        super(name);
    }

    
Creates a new JarEntry with fields taken from the specified ZipEntry object. 
Params:
ze – the ZipEntry object to create the JarEntry from/**
     * Creates a new {@code JarEntry} with fields taken from the
     * specified {@code ZipEntry} object.
     * @param ze the {@code ZipEntry} object to create the
     *           {@code JarEntry} from
     */
    public JarEntry(ZipEntry ze) {
        super(ze);
    }

    
Creates a new JarEntry with fields taken from the specified JarEntry object. 
Params:
je – the JarEntry to copy/**
     * Creates a new {@code JarEntry} with fields taken from the
     * specified {@code JarEntry} object.
     *
     * @param je the {@code JarEntry} to copy
     */
    public JarEntry(JarEntry je) {
        this((ZipEntry)je);
        this.attr = je.attr;
        this.certs = je.certs;
        this.signers = je.signers;
    }

    
Returns the Manifest Attributes for this entry, or null if none. 
Throws:
IOException –  if an I/O error has occurred
Returns:
the Manifest Attributes for this entry, or null if none/**
     * Returns the {@code Manifest} {@code Attributes} for this
     * entry, or {@code null} if none.
     *
     * @return the {@code Manifest} {@code Attributes} for this
     * entry, or {@code null} if none
     * @throws IOException  if an I/O error has occurred
     */
    public Attributes getAttributes() throws IOException {
        return attr;
    }

    
Returns the Certificate objects for this entry, or null if none. This method can only be called once the JarEntry has been completely verified by reading from the entry input stream until the end of the stream has been reached. Otherwise, this method will return null. 
The returned certificate array comprises all the signer certificates
that were used to verify this entry. Each signer certificate is
followed by its supporting certificate chain (which may be empty).
Each signer certificate and its supporting certificate chain are ordered
bottom-to-top (i.e., with the signer certificate first and the (root)
certificate authority last).
Returns:
the Certificate objects for this entry, or null if none./**
     * Returns the {@code Certificate} objects for this entry, or
     * {@code null} if none. This method can only be called once
     * the {@code JarEntry} has been completely verified by reading
     * from the entry input stream until the end of the stream has been
     * reached. Otherwise, this method will return {@code null}.
     *
     * <p>The returned certificate array comprises all the signer certificates
     * that were used to verify this entry. Each signer certificate is
     * followed by its supporting certificate chain (which may be empty).
     * Each signer certificate and its supporting certificate chain are ordered
     * bottom-to-top (i.e., with the signer certificate first and the (root)
     * certificate authority last).
     *
     * @return the {@code Certificate} objects for this entry, or
     * {@code null} if none.
     */
    public Certificate[] getCertificates() {
        return certs == null ? null : certs.clone();
    }

    
Returns the CodeSigner objects for this entry, or null if none. This method can only be called once the JarEntry has been completely verified by reading from the entry input stream until the end of the stream has been reached. Otherwise, this method will return null. 
The returned array comprises all the code signers that have signed
this entry.
Returns:
the CodeSigner objects for this entry, or null if none.
Since:
1.5/**
     * Returns the {@code CodeSigner} objects for this entry, or
     * {@code null} if none. This method can only be called once
     * the {@code JarEntry} has been completely verified by reading
     * from the entry input stream until the end of the stream has been
     * reached. Otherwise, this method will return {@code null}.
     *
     * <p>The returned array comprises all the code signers that have signed
     * this entry.
     *
     * @return the {@code CodeSigner} objects for this entry, or
     * {@code null} if none.
     *
     * @since 1.5
     */
    public CodeSigner[] getCodeSigners() {
        return signers == null ? null : signers.clone();
    }

    
Returns the real name of this JarEntry. If this JarEntry is an entry of a multi-release jar file and the JarFile is configured to be processed as such, the name returned by this method is the path name of the versioned entry that the JarEntry represents, rather than the path name of the base entry that ZipEntry.getName() returns. If the JarEntry does not represent a versioned entry of a multi-release JarFile or the JarFile is not configured for processing a multi-release jar file, this method returns the same name that ZipEntry.getName() returns. 
Returns:
the real name of the JarEntry
Since:
10/**
     * Returns the real name of this {@code JarEntry}.
     *
     * If this {@code JarEntry} is an entry of a
     * <a href="JarFile.html#multirelease">multi-release jar file</a> and the
     * {@code JarFile} is configured to be processed as such, the name returned
     * by this method is the path name of the versioned entry that the
     * {@code JarEntry} represents, rather than the path name of the base entry
     * that {@link #getName()} returns. If the {@code JarEntry} does not represent
     * a versioned entry of a multi-release {@code JarFile} or the {@code JarFile}
     * is not configured for processing a multi-release jar file, this method
     * returns the same name that {@link #getName()} returns.
     *
     * @return the real name of the JarEntry
     *
     * @since 10
     */
    public String getRealName() {
        return super.getName();
    }
}