Exploring Matrices: Write A Program That Prompts The User

Exploring matrix) Write a program that prompts the user to enter

Develop a Java program that prompts the user to input the size of a square matrix. The program should then randomly fill the matrix with 0s and 1s, print the matrix, and identify whether each row, column, and the two main diagonals contain all 0s or all 1s. The program should output specific messages indicating the status for each row, column, and diagonal, such as "All 0s on row 1," "All 1s on row 3," "No same numbers on a column," and similar for diagonals.

Paper For Above instruction

Object-oriented programming (OOP) is a paradigm that uses "objects" – data structures consisting of fields (attributes or properties) and methods (functions or procedures) – to design applications and computer programs. In the context of Java, OOP enables constructing modular, reusable, and maintainable code. This paper addresses the implementation details of four practical assignments that incorporate core OOP principles such as classes, objects, encapsulation, and methods. These assignments cover matrix exploration, financial banking simulation, geometric modeling, and account management, providing a comprehensive understanding of applying OOP concepts to real-world problems.

1. Matrix Exploration Program

The first task involves creating a program that allows a user to specify the size of a square matrix. The program then randomly fills this matrix with binary values (0s and 1s). Once populated, the matrix is printed for visual verification. Subsequently, the program analyzes the matrix's rows, columns, and diagonals to determine if they contain all identical numbers or if they differ. For each row, the program outputs whether it contains all zeros, all ones, or mixed values, for example, "All 0s on row 1" or "All 1s on row 3." Similar evaluations are made for the columns and diagonals. If there are mixed values, the program reports accordingly, such as "No same numbers on column 2" or "No same numbers on diagonal."

This task emphasizes understanding of multi-dimensional arrays, random number generation, loop controls, and logical testing—areas fundamental in OOP for managing data collections and performing condition-based analysis.

2. Financial Tsunami Simulation

The second assignment develops a more complex simulation involving banks lending money to each other. The problem models five banks with specific balances and loan relationships depicted through a directed graph. Each bank's total assets include its current balance and the amount lent to other banks. A bank becomes unsafe if its total assets fall below a certain threshold (limit). When a bank is deemed unsafe, loans that it has extended are considered unrecoverable, affecting the assets of other banks that have lent money to it. This dynamic propagation means that a bank’s safety status can influence others—making the problem an example of interconnected object relationships.

The program reads input data defining the balances and lending relationships among the banks, then iteratively updates the status of each bank based on total assets until all unsafe banks are identified. It utilizes a two-dimensional array to represent loans, modifying loan data as banks become unsafe to prevent recounting. This approach demonstrates application of arrays in managing interconnected objects, as well as control flow mechanisms to simulate financial integrity conditions.

3. Rectangle Class Design

The third task involves designing a Rectangle class to model geometric rectangles. The class includes two attributes—width and height—with default values set to 1. It provides two constructors: a no-argument constructor creating a default rectangle, and a parameterized constructor for custom dimensions. Additionally, the class implements methods to calculate and return the rectangle’s area and perimeter. The test program instantiates two Rectangle objects, one with specific dimensions and another with different dimensions, then displays their widths, heights, areas, and perimeters.

This assignment demonstrates object-oriented encapsulation, class design, constructor overloading, and the implementation of methods that operate on object attributes, illustrating the modeling of real-world entities in software.

4. Account Class with Financial Operations

The final programming exercise involves creating an Account class to manage banking accounts. The class contains private data fields for account ID, balance, annual interest rate, and the creation date. It provides initialization through a no-argument constructor and a constructor that accepts specific values for id and balance. Accessor and mutator methods facilitate data encapsulation. The class includes methods to retrieve the monthly interest rate, perform deposits and withdrawals, and access the account creation date.

A test program demonstrates creating an account with specific initial values, performing a withdrawal and deposit, and printing the current balance, monthly interest, and creation date. This reflects key principles of object-oriented security (encapsulation) and functionality (methods performing financial calculations) as applied in real banking systems.

Conclusion

These programming assignments collectively reinforce essential object-oriented programming principles, including class design, object creation, data encapsulation, method implementation, and array manipulation. They translate abstract concepts into practical coding exercises that mirror real-world scenarios, fostering mastery of Java’s OOP features. The ability to model various entities such as matrices, banks, rectangles, and accounts demonstrates versatility and depth in applying OOP for software development, ensuring readiness for complex programming tasks.

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