Basic HTML version of Foils prepared Sept 21 1998

Foil 52 Use of Native Classes to Speed Up Execution

From Java Tutorial 98- 4: Multi-Treading, Useful Java Classes, I/O and Networking NAVO Tutorial -- Sept 23 1998. by Geoffrey C. Fox, Nancy McCracken


One can essentially augment supplied Java Runtime by supplying your own C or other code implementing a particular functionality in a higher performance mode
This of course generates machine dependence and should only be used if really needed
First for classes you wish to implement in native fashion, put in your java code lines like:
  • public native mustgofast(arguments); // default functions
  • static { System.loadLibrary("faststuffhere"); } // static and in class and so runs only ONCE! and loads the native code



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