How do I get .gif file called red.gif from the package jar file I am using.
At the moment I am getting red.gif from the local directory;
Icon iconRed =new ImageIcon("red.gif");
I need to get the .gif from a guaranteed place, such as the .jar file.
Thanks
Gary
The following snippet extract a file (red.gif) from a jar.
import java.io.*;
import java.util.jar.*;
import java.util.zip.*;
public class ExtractFromJAR {
public void extractMyMDBromJAR(String fileName, String dest){
try {
String home = getClass().getProtectionDomain()
.getCodeSource().getLocation()
.getPath().replaceAll("%20", " ");
JarFile jar = new JarFile(home);
ZipEntry entry = jar.getEntry(fileName);
File efile = new File(dest, entry.getName());
InputStream in =
new BufferedInputStream(jar.getInputStream(entry));
OutputStream out =
new BufferedOutputStream(new FileOutputStream(efile));
byte[] buffer = new byte[2048];
for (;;) {
int nBytes = in.read(buffer);
if (nBytes <= 0) break;
out.write(buffer, 0, nBytes);
}
out.flush();
out.close();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String args []){
new ExtractFromJAR().extractFileFromJAR("red.gif", ".");
}
}
Hope That Helps
Thanks for the two solutions. I have used the 2nd solution.
I should of explained myself a bit better. I want to use the .gif, from the .jar, without extracting it.
The 2nd solution is perfect. I will keep the first example for another use I have in mind. I need to be able to extract .properties files, if they are missing from an installation.
Thanks!
Gary
