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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class JarEntry - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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java.util.jar
Class JarEntry

java.lang.Object
  |
  +--java.util.zip.ZipEntry
        |
        +--java.util.jar.JarEntry

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public class JarEntry

extends ZipEntry

This class is used to represent a JAR file entry.

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Fields inherited from class java.util.zip.ZipEntry

DEFLATED, STORED

 

Constructor Summary

JarEntry(JarEntry je)           Creates a new JarEntry with fields taken from the specified JarEntry object.

JarEntry(String name)           Creates a new JarEntry for the specified JAR file entry name.

JarEntry(ZipEntry ze)           Creates a new JarEntry with fields taken from the specified ZipEntry object.

 

Method Summary
Attributes	getAttributes()           Returns the Manifest Attributes for this entry, or null if none.
Certificate[]	getCertificates()           Returns the Certificate objects for this entry, or null if none.

 

Methods inherited from class java.util.zip.ZipEntry

clone, getComment, getCompressedSize, getCrc, getExtra, getMethod, getName, getSize, getTime, hashCode, isDirectory, setComment, setCompressedSize, setCrc, setExtra, setMethod, setSize, setTime, toString

 

Methods inherited from class java.lang.Object

equals, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Constructor Detail

JarEntry

public JarEntry(String name)

Creates a new JarEntry for the specified JAR file entry name.

Parameters:

the - JAR file entry name

Throws:

NullPointerException - if the entry name is null

IllegalArgumentException - if the entry name is longer than 0xFFFF bytes.

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JarEntry

public JarEntry(ZipEntry ze)

Creates a new JarEntry with fields taken from the specified ZipEntry object.

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JarEntry

public JarEntry(JarEntry je)

Creates a new JarEntry with fields taken from the specified JarEntry object.

Parameters:

je - the JarEntry to copy

Method Detail

getAttributes

public Attributes getAttributes()
                         throws IOException

Returns the Manifest Attributes for this entry, or null if none.

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getCertificates

public Certificate[] getCertificates()

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).

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