Conversion of .class to jar and .class to exe

Question

How do I convert:

• class file to jar file using cmd?
• class file to exe file?
• jar file to exe?

Can I convert exe file to jar file?

Answer 1

Class files to jar files

Usage: jar {ctxu}[vfm0M][jar-file]

[manifest-file] [-C dir] files ...

Options:

-c  create new archive

 -t  list table of contents for archive

 -x  extract named (or all) files from archive

 -u  update existing archive

 -v  generate verbose output on standard output

 -f  specify archive file name

 -m  include manifest information from specified manifest file

 -0  store only; use no ZIP compression

 -M  do not create a manifest file for the entries

 -i  generate index information for the specified jar files

 -C  change to the specified directory and include the following

file If any file is a directory then it is processed recursively. The manifest file name and the archive file name needs to be specified in the same order the 'm' and 'f' flags are specified.

Example 1: to archive two class files into an archive called classes.jar:

`jar cvf classes.jar Foo.class Bar.class` 

Example 2: use an existing manifest file 'mymanifest' and archive

all the files in the foo/ directory into 'classes.jar':

jar cvfm classes.jar mymanifest -C foo/ .

Convert jar files to .exe file

1)JSmooth .exe wrapper

2)JarToExe 1.8

3)Executor

4)Advanced Installer

Convert .class to .exe is discussed in length here