unziiping jar file.......

[ramesh]

I am trying to unzip jar file into another directory I am getting following error

Unhandled exception:
java.io.FileNotFoundException: C:\Ramesh\10_AssemblyTest\ (Access is denied)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:102)
at java.io.FileOutputStream.<init>(FileOutputStream.java:62)
at Unzip.main(Unzip.java:67)

here is my code..

public static final void main(String[] args) {
Enumeration entries;
ZipFile zipFile;
ZipFile zipFile = new ZipFile(f);

try {

String myfile = "C:\\Ramesh\\AIS02.jar";
String myfileout = "C:\\Ramesh\\10_AssemblyTest\\";


File f = new File(myfile);
zipFile = new ZipFile(f);

entries = zipFile.entries();

while(entries.hasMoreElements()) {

ZipEntry entry = new ZipEntry(myfileout);

if(entry.isDirectory()) {

(new File(entry.getName())).mkdir();
continue;
}

//System.err.println("Extracting file: " + entry.getName());
copyInputStream(zipFile.getInputStream(entry),
new BufferedOutputStream(new FileOutputStream(entry.getName())));

}

zipFile.close();
} catch (IOException ioe) {
System.err.println("Unhandled exception:");
ioe.printStackTrace();
return;
}

[Thomas Weidenfeller]

rpa...@kentlaw.edu (ramesh) writes:
> while(entries.hasMoreElements()) {
>
> ZipEntry entry = new ZipEntry(myfileout);

This is nonsens. You enumerate over the entries, but you never get any
of the entries at all.

You want something like:

ZipEntry entry = (ZipEntry)entries.nextElement();
>
>
> if(entry.isDirectory()) {
>
> (new File(entry.getName())).mkdir();

(a) You are not prepending your target directory "myfileout", so
the directories are not created where you think they are.

(b) This assumes that there is always a directory entry in the zip file
before there are the actual files for the directory. You might want to
check the zip format specification if this is guaranteed. I am not sure
at the moment.

> //System.err.println("Extracting file: " + entry.getName());
> copyInputStream(zipFile.getInputStream(entry),
> new BufferedOutputStream(new FileOutputStream(entry.getName())));

Again, you are not prepending your target directory name to the file
name.

/Thomas

[Marco Schmidt]

ramesh:

>I am trying to unzip jar file into another directory I am getting following error

> ZipEntry entry = new ZipEntry(myfileout);

The API docs of ZipEntry say:

public ZipEntry(String name)
Creates a new zip entry with the specified name.

However, myfileout points to a directory (I guess).

More importantly, instead of calling entries.nextElement, you seem to
create a new ZipEntry without any context. So you are not really
working on the entries taken from the ZIP file.

[...]

Regards,
Marco
--
Please reply in the newsgroup, not by email!
Java programming tips: http://jiu.sourceforge.net/javatips.html
Other Java pages: http://www.geocities.com/marcoschmidt.geo/java.html