.jpegextension. Available image formats depend on your Java version. Java 6 supports by default BMP, GIF, JPEG, JPG, PNG and WBMP formats. If your Java instance has additional libraries installed such as JAI (Java Advanced Imaging), it may support additional formats. To find out which image formats are supported by your particular environment open the Help->About window, select the System Information tab and review content of the Supported Image Formats field.