Things to remember that came up during Lab 2

Once you have saved a file in jGrasp, when you recompile it will automatically do a save. You don’t need to hit the disk icon to resave the new file.

Scanner is in java.util so want to include import java.util.Scanner when you use it.

File is in java.io so want to include import java.io.* when you use it.

You catch block needs

catch ( <ExceptionClass> <nameOfExceptionObject>)

{

}

Once you have a <nameOfExceptionObject> you can use it to call the methods of <ExceptionClass>

A convention I like to use is to make the <nameOfExceptionObject> match the <ExceptionClass>.

For example: :

suppose you want to catch an ArrayIndexOutOfBoundsException, then use the first letter of each word in the ExceptionClassName) as your <nameOfExceptionObject>

. catch (ArrayIndexOutOfBoundsException aioobe)

When you have finished looking at or capturing the output in the jGrasp output window, you should clear it before re-compiling or re-running your program. That way, the only thing in the output window will be the current information (which makes it easier to copy and less confusing to read).

A throws clause has to be appended to a block header or method header, it can’t be appended to a single statement.

When you look at the method PrintStackTrace in the API, it is easy to overlook the one with no parameters.