Java File Viewer is an Android application developed by vaibhav singhal that allows users to preview Java files on their mobile devices and convert them to PDF format. With this app, users can easily view Java files, toggle line numbers, and change the background of the files.

One of the main features of Java File Viewer is its ability to convert Java files to PDF. This is especially useful for users who need to share their Java code with others or save it for future reference. The app provides a simple and user-friendly interface for converting the files, making it accessible to both beginners and experienced programmers.

In addition to converting Java files to PDF, the app also allows users to open the converted PDF files directly within the application. This eliminates the need for a separate PDF viewer, making it convenient for users to access their converted files.

Furthermore, Java File Viewer supports multiple languages, including English and Korean, making it accessible to users from different parts of the world.

Overall, Java File Viewer is a useful tool for developers and programmers who want to preview and convert Java files on their Android devices. Its simple interface, PDF conversion feature, and language support make it a valuable addition to any developer's toolkit.