Run exe which is packaged inside jar file

Question

I am executing an exe through my java program. The path is hardcoded in Java.

I have packaged my the exe in the jar.

But am stuck as I have the path name hardcoded in the Java file, so I am not able to execute my jar as a stand alone program.

Any hints for packaging such jar i.e having an exe inside and able to run it as a stand alone program?

Answer 1

This will extract the .exe to a local file on the local disk. The file will be deleted when the Java program exists.

import java.io.Closeable; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.URI; import java.net.URISyntaxException; import java.net.URL; import java.security.CodeSource; import java.security.ProtectionDomain; import java.util.zip.ZipEntry; import java.util.zip.ZipException; import java.util.zip.ZipFile;  public class Main {     public static void main(final String[] args)         throws URISyntaxException,                ZipException,                IOException     {         final URI uri;         final URI exe;          uri = getJarURI();         exe = getFile(uri, "Main.class");         System.out.println(exe);     }      private static URI getJarURI()         throws URISyntaxException     {         final ProtectionDomain domain;         final CodeSource       source;         final URL              url;         final URI              uri;          domain = Main.class.getProtectionDomain();         source = domain.getCodeSource();         url    = source.getLocation();         uri    = url.toURI();          return (uri);     }      private static URI getFile(final URI    where,                                final String fileName)         throws ZipException,                IOException     {         final File location;         final URI  fileURI;          location = new File(where);          // not in a JAR, just return the path on disk         if(location.isDirectory())         {             fileURI = URI.create(where.toString() + fileName);         }         else         {             final ZipFile zipFile;              zipFile = new ZipFile(location);              try             {                 fileURI = extract(zipFile, fileName);             }             finally             {                 zipFile.close();             }         }          return (fileURI);     }      private static URI extract(final ZipFile zipFile,                                final String  fileName)         throws IOException     {         final File         tempFile;         final ZipEntry     entry;         final InputStream  zipStream;         OutputStream       fileStream;          tempFile = File.createTempFile(fileName, Long.toString(System.currentTimeMillis()));         tempFile.deleteOnExit();         entry    = zipFile.getEntry(fileName);          if(entry == null)         {             throw new FileNotFoundException("cannot find file: " + fileName + " in archive: " + zipFile.getName());         }          zipStream  = zipFile.getInputStream(entry);         fileStream = null;          try         {             final byte[] buf;             int          i;              fileStream = new FileOutputStream(tempFile);             buf        = new byte[1024];             i          = 0;              while((i = zipStream.read(buf)) != -1)             {                 fileStream.write(buf, 0, i);             }         }         finally         {             close(zipStream);             close(fileStream);         }          return (tempFile.toURI());     }      private static void close(final Closeable stream)     {         if(stream != null)         {             try             {                 stream.close();             }             catch(final IOException ex)             {                 ex.printStackTrace();             }         }     } }