Java Programming BAC3 Assignment: Create An Application

Java Programmingbac3 Assignmentcreate An Application Named Arithmeticm

Java Programming BAC3 Assignment Create an application named ArithmeticMethods whose main() method holds two integer variables. Assign values to the variables. In turn, pass each value to methods named displayNumberPlus10(), displayNumberPlus100(), and displayNumberPlus1000(). Create each method to perform the task its name implies. Save the application as ArithmeticMethods.java.

Modify the ArithmeticMethods class to accept the values of the two integers from a user at the keyboard. Save the file as ArithmeticMethods2.java.

Create an application named Percentages whose main() method holds two double variables. Assign values to the variables. Pass both the variables to a method named computePercent() that displays the two values and the value of the first number as a percentage of the second one. For example, if the numbers are 2.0 and 5.0, the method should display a statement similar to “2.0 is 40% of 5.0.” Then call the method a second time, passing the values in reverse order. Save the application as Percentages.java.

Modify the Percentages class to accept the values of the two doubles from a user at the keyboard. Save the file as Percentages2.java.

Paper For Above instruction

Introduction

The assignment involves creating Java applications that demonstrate fundamental programming concepts such as method creation, user input handling, and basic arithmetic calculations. The tasks include developing an initial application to manipulate integers with specific methods, modifying that application to accept user input, and similarly developing a second application to compute and display percentage relations between double variables. These exercises aim to strengthen understanding of Java methods, parameter passing, input management, and formatted display output.

Development of ArithmeticMethods Application

Initial Version

The first part requires creating an application called ArithmeticMethods.java. It contains a main() method where two integer variables are declared and initialized with specific values. These values are then passed to three methods: displayNumberPlus10(), displayNumberPlus100(), and displayNumberPlus1000(). Each method performs its respective operation—adding 10, 100, or 1000 to the passed number—and displays the result. This implementation demonstrates method creation, parameter passing, and output formatting.

Modified Version with User Input

The next step modifies the ArithmeticMethods class to obtain the two integer values from the user via keyboard input. This involves utilizing the Scanner class to accept input during runtime, replacing hardcoded values with user-supplied data. The program then proceeds to call the same three methods with these user-inputted values, maintaining the same functionality and output format.

Development of Percentages Application

Initial Version

The second application, Percentages.java, declares two double variables in its main() method, assigns specific values, and passes them to a method called computePercent(). This method calculates the first number as a percentage of the second and displays a message like "2.0 is 40% of 5.0." It is then called again with the values reversed, to demonstrate symmetry in percentage calculation. This task enhances understanding of double precision calculations, method parameter passing, and formatted output.

Modified Version with User Input

The final adjustment modifies the Percentages class to accept input from the keyboard for the two double values. Using the Scanner class, the program prompts the user for input, then proceeds to perform percentage calculations with these user-provided values, maintaining the same output format.

Conclusion

These Java programming exercises are designed to reinforce foundational skills in creating and modifying applications using methods, handling user input, performing arithmetic calculations, and displaying results in a clear, formatted manner. Implementing these tasks provides practical experience in Java syntax, parameter passing, input validation, and output formatting, essential for developing robust Java applications.

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