Java:: Calculate method execution time

By: Techie on 00:50

Quite often performance is a huge threat to any application. To isolate certain method call taking time, for instance in my case JCR session acquiring takes time.

To calculate time difference, use 'System' api function.

// Place at the start of method execution
final long startTime = TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis());
// Process....

//Before end of method
final long endTime = TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis());

System.out.println("Time taken :::: " + (endTime - startTime)+ "seconds");


If you have Spring AOP support in your application, you can configure this pattern with required methods.

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