Java and Bali to the east. Borneo lies to the north and Christmas Island is to the south. It is the world's 13th largest island. Java is surrounded by the Java Sea to the north, Sunda Strait to the west, the Indian Ocean to the south and Bali Strait and Madura Strait in the east. Java is almost entirely of volcanic origin; it contains thirty-eight mountains forming an east–west spine that have at one time or another been active volcanoes. The highest volcano in Java is Mount Semeru (). The most active volcano in Java and also in Indonesia is Mount
Comparison of the Java and .NET platforms sizes: Java 6 JRE is 13 MB, but Acrobat Reader is 33 MB, QuickTime 19 MB, Windows Media Player 25 MB, the .NET Framework 3.0 runtime is 54 MB, and the .NET Framework 3.5 runtime is 197 MB (it's a united package for x86, x64 and IA-64, each part has approximately 60 MB). At the JavaOne event in May 2007 Sun announced that the deployment issues with Java would be solved in two major updates during the lifespan of Java 6 (the changes will not be held over to Java 7.) These include: Comparison of the Java and .NET platforms