Give a simplest way to find out the time a method takes for execution without using any profiling tool?

Q

Give a simplest way to find out the time a method takes for execution without using any profiling tool?

✍: Guest

A

Read the system time just before the method is invoked and immediately after method returns. Take the time difference, which will give you the time taken by a method for execution.

To put it in code...
long start = System.currentTimeMillis ();
method ();
long end = System.currentTimeMillis ();

System.out.println ("Time taken for execution is " + (end - start));

Remember that if the time taken for execution is too small, it might show that it is taking zero milliseconds for execution. Try it on a method which is big enough, in the sense the one which is doing considerable amout of processing.

2013-05-24, 1937👍, 0💬