Tutorial: Write a program for calculating area and perimeter of a rectangle
If you are a newbie in Java programming then our tutorials and examples will be helpful in understanding Java programming in the most simplest way.
Tutorial Details:
Here after reading this lesson, you will be able to write program for calculating the area and perimeter of a rectangle.
First of all create a class named RecArea under Java.io package. Now define two integer variable 'l' and 'w'. As the program will be based on keyboard numerical input, it is important for every programmer to use correct data without any mistake. In this case the exception methods like try/catch mechanism helps in detecting user input errors. So before starting the functional code, enclosed it with try clause so that any error in the statement causes the execution of the catch clauses.
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