Time record .......help!!!

Question

i remember that there is a method to record run time during the coding runing. but i am not sure which one for it?
help
thanks

Answer 1

To help you a little:
public static long currentTimeMillis()
in
java.lang.System
means that there is a method with the name currentTimeMillis
which takes no parameters (therefore the empty brackets)
returns a long integer number (a number of type long)
and is defined in the class System
in the package java.lang.
static means you do not need to create an instance (an object) of the type System. You can call static methods this way: Classname.methodname(parameters)(Ignore 'public' for now - before you know how to subclass existing classes, all the methods you will want to use are public. It just means you can call them from outside the package, e.g. your program. You can't do this with protected methods. (package-private and private methods don't show up in the Java API documentation.))
java.lang is the default package. You do not need to import it. You have probably used other classes from java.lang, e.g. String (which would be java.lang.String). You can simply write "System", there is no need to write "java.lang.System" in your program.
So now write something like:
returntype variableName = Classname.methodename(parameters);
at the beginning of your program and
returntype otherVariableName = Classname.methodename(parameters);
at the end of the program
and then subtract the first variable from the second variable and you get how many milliseconds your program has run.
Think about:
What return type does currentTimeMillis have?
What would be suitable variable names?
What is the name of the class?
What is the name of the method?
What parameters does currentTimeMillis take?
If you still can't figure it out, post your thoughts here and post what you have tried and didn't work.
Also, learn to read the Java API documentation:
http://java.sun.com/j2se/1.4.1/docs/api/
In the left top frame, click on java.lang.
In the left bottom frame, click on System afterwards.
In the large frame at the right, scroll down to currentTimeMillis().
Monika.