File Extension JAVA

  • Full name
    Java Language Source Code Format
  • Developer
  • Popularity
Have you encountered a problem with a JAVA file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a JAVA file here. In the further part of this page we have added a list of programs that should open your JAVA file. It is enough you choose a proper application for your operating system, download and install it.


Files with the extension JAVA are source code files in the Java programming language. Java files can contain the source code for entire programs or only parts, for example classes or functions, which are imported into another JAVA file.

JAVA files are just text files that can be processed by a JAVA compiler. They can be opened and edited in any text editor, but it is recommended to use editors with developer features such as syntax highlighting or an integrated development environment (IDE) for easier work.

Compiling a JAVA file results in a class file containing a so-called ByteCode as a result for each class (a programming construct). This bytecode is only executable in a Java Virtual Machine (JVM) or Java Runtime Environment (JRE). These JVMs and JREs are available on many platforms, so Java is considered a platform-independent programming language.

Programs which can open a JAVA file

How to open a JAVA file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the JAVA file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a JAVA file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support JAVA files. At this point we are looking for disk space where the application was installed in and we can link it with a JAVA file. Since then, our operating system will use the selected program to support all JAVA files.

Other issues

Despite the described problem with JAVA there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the JAVA file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the JAVA file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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