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TimeComputation.javaAPI DocExample1005Sun Feb 08 21:33:46 GMT 2004None

TimeComputation

public class TimeComputation extends Object
TimeComputation for processing sqrt and I/O operations.
author
Ian Darwin, http://www.darwinsys.com/
version
$Id: TimeComputation.java,v 1.7 2004/02/09 03:33:46 ian Exp $

Fields Summary
Constructors Summary
Methods Summary
public static voidmain(java.lang.String[] argv)

		try {
			new TimeComputation().run();
		} catch (IOException e) {
			System.err.println(e);
		}
public voidrun()


		DataOutputStream n = new DataOutputStream(
			new BufferedOutputStream(new FileOutputStream(SysDep.getDevNull())));
		long t0, t1;
		System.out.println("Java Starts at " + (t0=System.currentTimeMillis()));
		double k;
		for (int i=0; i<100000; i++) {
			k = 2.1 * Math.sqrt((double)i);
			n.writeDouble(k);
		}
		System.out.println("Java Ends at " + (t1=System.currentTimeMillis()));
		double deltaT = t1-t0;
		System.out.println("This run took " + 
			DecimalFormat.getInstance().format(deltaT/1000.) + " seconds.");