I have a func a(x, y z) that would like to time, is there a way to this:
time = timeit( a(x,y,z) ) in java, time it would accept any func.
like:
long timeit(Object func){
long startTime = System.currentTimeMillis();
func(...);
return System.currentTimeMillis() - startTime;
}
You need place your function in Runnable interface, in public void run() method.
Modified code:
public long timeit(Runnable func)
{
long startTime = System.currentTimeMillis();
func.run();
return System.currentTimeMillis() - startTime;
}
Function:
public class MyFunction implements Runnable
{
@Override public void run() { System.out.println(); }
}
Method object and call it via reflectionRunnable is better as it quicker and simpler.Using Reflection:
If functionCall() is an instance method
-> create an object for the class
-> Invoke method using object of that class
MyClass objToPass = new MyClass();
Method m;
//Assuming functionCall() takes no arguments
m = MyClass.class.getMethod("functionCall", new Class[]{});
//Parameter list empty
m.invoke(objToPass, new Object[]{});
How about defining an interface (let's say FunctionRunner) with just one method (let's call it run()). Now you can implement this interface and do whatever you want to do when run() is being called. Then your Code to measure the time of a function would be like this:
long timeit(FunctionRunner func){
long startTime = System.currentTimeMillis();
func.run();
return System.currentTimeMillis() - startTime;
}
