1.- At a command line, launch the ObjectTool and by typing the following:

    java -cp ot021502c.jar OT

Two ObjectTool windows appear. The first window is called the ObjectTool interpreter. You type lines of code in this window.
The second window is called the Display Controller Window. Objects that you create appear in this window.

2.- In the Code Entry field within the ObjectTool interpreter, type the following:

    int myVariable; <return>

After you press Return, the line of syntax appears in the Code Entry History panel. The Code Entry History panel displays all of the syntax lines you have typed along with any error messages.

If you made a mistake, you might also receive am error in the Code Entry History panel. Try typing the syntax in again.

Also, after you press return, an int variable called myVariable is declared and placed in the Local Variables table. This table simulates all of the variables you have created that would typically appear in stack memory

3.- In the Code Entry Field, type the following:

    myVariable = 10; <return>

After you press Return, the value of 10 is assigned to the myVariable variable.

4.- Click the Show Binary Value Using Int menu item in the View menu to display the value of myVariable as a binary integer.

Because integers occupy 32 bits in memory, you will see 32 bits representing the value 10 in binary.

5.- Click the Show Binary Value Using Int menu item again to turn the myVariable value back to an integer value.

6.- In the Display Controller Window, click the OTShirt0 pre-created object from the Show Precreated Objects menu.

The Display Controller Window simulates how and object might appear in heap memory and how that object is an instance of a class.