Can you get source code from a jar file?

Can you get source code from a jar file?

Hi, Jar files are archive files that contains of a lot of different java classes (files). You can use winzip/winrar to open the jar files and you can see those java classes in jar files. Typically you can use a Java decompiler to decompile the class file and look into the source code.

How do I extract an executable JAR file?

Type in jar xf followed by a space followed by the name of the JAR file. This is the command to extract a JAR file. For example, to extract a JAR file called “minecraft”, you would type in jar xf minecraft. jar .

How do I view the source code of a jar file in eclipse?

Or, if this source jar file contains the sources of a classes jar file that is used as a library in your Eclipse project, just right-click on this jar file, select “Properties”, then “Java Source Attachment”, then “External File”, and select the source jar file.

How do I view the contents of a jar file in IntelliJ?

From the File menu just choose Project structure. 3) Then go to Libraries on the left side. Then click the + sign (add new library). Then locate your JAR and select it, this will import it as a library.

How can I get source code from jar online?

Steps to get sources of a jar file as a zip : Download JD-GUI from and save it at any location on your system. Drag and drop the jar or open ….location on your system.

  1. Drag and drop the jar for which you want the sources on the JAD.
  2. Click on File menu and select save jar sources.

How do I view the jar code in IntelliJ?

Open the necessary . class file in the editor in IntelliJ IDEA and then select View | Show Bytecode from the main menu. If you’re not seeing this option, make sure that the bundled Bytecode Viewer plugin is enabled.

How do I unzip a jar file in Terminal?

Given a file named Me.Jar:

  1. Go to cmd.
  2. Hit Enter.
  3. Use the Java jar command — I am using jdk1.8.0_31 so I would type. C:\Program Files (x86)\Java\jdk1.8.0_31\bin\jar xf me.jar.

How do I read a jar file in Linux?

Use WinRar.

  1. F2 & Rename to jarfile. zip //Use any unzipper…
  2. jar tvf jarfile.jar.
  3. jar tf jarfile.jar.

How do I run a jar file from terminal?

  1. Open a command prompt with CTRL + ALT + T.
  2. Go to your “.jar” file directory. If your Ubuntu version / flavour supports it, you should be able to right click on your “.jar” file’s directory and click “Open in Terminal”
  3. Type the following command: java -jar jarfilename.jar.

Is there a way to extract source code from an executable.jar file?

Is there a way to extract the source code from an executable .jar file (Java ME)? Use JD GUI. Open the application, drag and drop your JAR file into it. I believe this can be done very easily. You can always extract the source files (Java files) of a jar file into a zip. location on your system.

How can I find the source code in a java jar?

You should be able to check this using any ZIP archive tool. If there are no “.java” files in the JARs (e.g. only a lot of “.class” and other files), you do not have the source code for the product.

Do you need to see the source of a.jar file?

If you need to change the code in the library, you’ll need to see the source. It’s also possible that the .jar files in your project are 3rd-party (or internal proprietary) libraries that you won’t need to change at all. It’s quite common to include libraries that you just use without modifying in your jar.

How do I save a.jar file in Java?

Drag and drop the jar or open .jar file for which you want the sources on the JD. Java Decompiler will open with all the package structure in a tree format. Click on File menu and select save jar sources. It will save the sources as a zip with the same name as the jar.