: Provides technical resources and some specific J2ME (Java 2 Micro Edition) related books for download at FreeBookCentre . How to Use Java Books on Modern Devices
: A primary source for bulk downloads of legacy mobile content. You can find large "dumps" of Java applications, including e-books and early mobile software, at Internet Archive .
Because this technology is largely obsolete, most original sites have disappeared, but several digital archives and niche portals still host these files:
: One of the oldest mobile app stores that originally built its reputation on Java content. While it has shifted toward Android, it still maintains a legacy database of Java apps accessible at GetJar .
: This is the most popular emulator for running .jar files on Android. It allows you to configure screen resolution and keyboard types to match old devices.
: A legacy site that still hosts articles and stories specifically in .jar and .jad formats for mobile phones, available at CaseClub.ru .
If you no longer have a physical feature phone, you can still read these books using emulators:
Downloading books in Java format ( .jar or .jad ) was the standard for mobile reading on feature phones (like Nokia, Sony Ericsson, and Motorola) before the smartphone era. These "books" were essentially small Java applications (MIDlets) that functioned as standalone e-readers. Where to Find Java Books Today
