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For example, the following command will create a outputJar.jar file with the content of the classesDir directory, and will set the myPackager.MainClass as the executable class of the jar file: javapackager -createjar -appclass myPackager.MainClass -srcdir classesDir -outdir out -outfile outputJar -v
Executable compression can be used to prevent direct disassembly, mask string literals and modify signatures. Although this does not eliminate the chance of reverse engineering, it can make the process more costly. A compressed executable requires less storage space in the file system, thus less time to transfer data from the file system into ...
An executable Java program can be packaged in a JAR file, along with any libraries the program uses. Executable JAR files have the manifest specifying the entry point class with Main-Class: myPrograms.MyClass and an explicit Class-Path (and the -cp argument is ignored). Some operating systems can run these directly when clicked.
Early compilers and linkers for the MS-DOS platform could not produce a COM file executable directly. Instead, the compilers would output an EXE-format file with relocation information. If all 8086 segments were set to be identical in such an EXE file (i.e. the "tiny" memory model was used), then exe2bin could convert it to a COM file.
The self-extracting executable may need to be renamed to contain a file extension associated with the corresponding packer; archive file formats known to support this include ARJ [1] and ZIP. [2] [3] Typically, self-extracting files for Microsoft operating systems such as DOS and Windows have a .exe extension, just like any other executable file.
Created in 2004, PHAR files were influenced [1] by Java's JAR file format with the aim of speeding up deployment of applications via FTP. [1] Rather than using the ZIP file format the simpler tar format was used, and the first PHAR was created using the tar command line utility [1] as a proof of concept.
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JAR files are created with the jar command-line utility. The command jar cf myPackage.jar *.class compresses all .class files into the JAR file myPackage.jar. The 'c' option on the command line tells the jar command to "create new archive." The ' f ' option tells it to create a file. The file's name comes next before the contents of the JAR file.