LAB REPORT: #11
SUBJECT: Using 2-dimensional
arrays
SUBMITTED BY: SAMIA
REG. NO: 17JZBCS0022
DEPARTMENT: CS&IT
TITLE: More practice writing
classes that represent objects
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Lab Report #11: Using 2-Dimensional Arrays in Java, Study Guides, Projects, Research of C programming
Object-oriented programming (OOP) refers to a type of computer programming (software design) in which programmers define the data type of a data structure, and also the types of operations (functions) that can be applied to the data structure.
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LAB REPORT:
SUBJECT : Using 2-dimensional
arrays
SUBMITTED BY: SAMIA
REG. NO: 17JZBCS
DEPARTMENT: CS&IT
TITLE: More practice writing
classes that represent objects
Exercise 1:
- In BlueJ, create a new project called Lab
- Create a class called SalesDemo with a sta9c method called checkSales
- In checkSales , create a 2-dimensional integer array (5 by 10) called sales.
- This array will hold the number of products sold for 5 salespeople and 10 products (say, for a given month)
SOLUTION:
Exercise 2:
- Fill the sales array with random numbers between 0 and 499 Representing the sales:
- Create a Random object (don't forget to import the class).
- Use nested for loops to store a random value for each person and product
- Don't use literals like 5 or 10 in the loops – use the length of a row or column.
SOLUTION:
Exercise 3:
- After filling the array, write another nested loop that prints the
Exercise 6:
- In the SalesDemo class, after printing the sales table you created, create a SalesAnalyzer object using that table.
- Then, calling the totalForPerson method, print the sales total for the sales people at index 2 and index 4: The total sales for sales person 2 is xxx The total sales for sales person 4 is xxx
SOLUTION:
Exercise 7:
- Add another method in the SalesAnalyzer class called totalForProduct that accepts a product index and returns the total sales for that product.
- This will sum a column instead of a row.
- Add a call to totalForProduct in SalesDemo showing the total sales for the product at index 8. The total sales of product 8 is xxx