public interface Jar
extends java.lang.AutoCloseable
JarFile and JarInputStream) have
significantly different performance characteristics depending on the form of
the URL used to access the JAR. For file based JAR URLs,
JarFile is faster but for non-file based
URLs, JarFile creates a copy of the
JAR in the temporary directory so JarInputStream is
faster.| Modifier and Type | Method and Description |
|---|---|
void |
close()
Close any resources associated with this JAR.
|
boolean |
exists(java.lang.String name)
Determine if the given resource in present in the JAR.
|
java.io.InputStream |
getEntryInputStream()
Obtains the input stream for the current entry.
|
java.lang.String |
getEntryName()
Obtains the name of the current entry.
|
java.io.InputStream |
getInputStream(java.lang.String name)
Obtain an
InputStream for a given entry in a JAR. |
java.net.URL |
getJarFileURL() |
long |
getLastModified(java.lang.String name)
Obtain the last modified time for the given resource in the JAR.
|
java.util.jar.Manifest |
getManifest()
Obtain the manifest for the JAR file.
|
java.lang.String |
getURL(java.lang.String entry)
Obtain, in String form, the URL for an entry in this JAR.
|
void |
nextEntry()
Moves the internal pointer to the next entry in the JAR.
|
void |
reset()
Resets the internal pointer used to track JAR entries to the beginning of
the JAR.
|
java.net.URL getJarFileURL()
java.io.InputStream getInputStream(java.lang.String name)
throws java.io.IOException
InputStream for a given entry in a JAR. The caller is
responsible for closing the stream.name - Entry to obtain an InputStream forInputStream for the specified entry or null if
the entry does not existjava.io.IOException - if an I/O error occurs while processing the JAR filelong getLastModified(java.lang.String name)
throws java.io.IOException
name - Entry to obtain the modification time forSystem.currentTimeMillis() that the resource was last
modified. Returns -1 if the entry does not existjava.io.IOException - if an I/O error occurs while processing the JAR fileboolean exists(java.lang.String name)
throws java.io.IOException
name - Entry to look fortrue if the entry is present in the JAR, otherwise
falsejava.io.IOException - if an I/O error occurs while processing the JAR filevoid close()
close in interface java.lang.AutoCloseablevoid nextEntry()
java.lang.String getEntryName()
java.io.InputStream getEntryInputStream()
throws java.io.IOException
java.io.IOException - If the stream cannot be obtainedjava.lang.String getURL(java.lang.String entry)
JarFactory to ensure resources are
accessed correctly.entry - The entry to generate the URL forjava.util.jar.Manifest getManifest()
throws java.io.IOException
java.io.IOException - If an I/O error occurs trying to obtain the manifestvoid reset()
throws java.io.IOException
java.io.IOException - If the pointer cannot be resetCopyright © 2000-2019 Apache Software Foundation. All Rights Reserved.