package com.radbit.util;
  
public class AnExample {
      
    AnExample() { start = 0; stop = 0; }
    // static initialization block	
    static { System.loadLibrary( "hrestime" ); 	}
  
    //native methods are declare in DLL hrestime.dll
    public native String getGreeting( String greeting ); 
    public native Long getPerformanceFrequency();
    public native long getPerformanceCounter();
  	
    public void setStartTime( long a ) {
        start = a;
    }
  	
    public void setStopTime( long b ) {
	stop = b;
    }
  	
    public double getElapsedTime() {
	return (double)(stop - start) / getPerformanceFrequency().doubleValue();
    }
  	
    public static void main ( String[] args ) {
        AnExample ex = new AnExample();
  	
        System.out.println();
        System.out.println( ex.getGreeting( "Hello from Java" ) );
  		
        ex.setStartTime( ex.getPerformanceCounter() );
        for ( int i = 0; i < 1000000; i++ ) {} // kill some time
        ex.setStopTime( ex.getPerformanceCounter() );
  	
        System.out.println( "Elapsed time: " + ex.getElapsedTime() );
    }
  	
    private long start;
    private long stop;
  	
}