Primitive data types in Java - Mini Project: Build & Apply

Primitive Data Types in Java

📖 Scenario: You are creating a simple Java program to store and display basic information about a product using primitive data types.

🎯 Goal: Build a Java program that declares variables with primitive data types, assigns values, and prints them.

📋 What You'll Learn

Declare variables using Java primitive data types: int, double, char, and boolean

Assign specific values to each variable

Print the values to the console

💡 Why This Matters

🌍 Real World

Primitive data types are used to store simple data like numbers, letters, and true/false values in many programs.

💼 Career

Understanding primitive data types is essential for any Java developer to handle data efficiently and write clear code.

1

Declare primitive variables

Declare a variable called productId of type int and set it to 101.

Java

// Declare an int variable named productId and assign 101
// Your code here

Need a hint?

Use int for whole numbers like IDs.

2

Add more primitive variables

Declare a variable called price of type double and set it to 29.99. Also declare a variable called inStock of type boolean and set it to true.

Java

int productId = 101;
// Declare a double variable named price and assign 29.99
// Declare a boolean variable named inStock and assign true
// Your code here

Need a hint?

Use double for decimal numbers and boolean for true/false values.

3

Add a character variable

Declare a variable called category of type char and set it to the letter 'E'.

Java

int productId = 101;
double price = 29.99;
boolean inStock = true;
// Declare a char variable named category and assign 'E'
// Your code here

Need a hint?

Use single quotes ' ' for char values.

4

Print all variables

Use System.out.println to print the values of productId, price, inStock, and category each on a new line.

Java

int productId = 101;
double price = 29.99;
boolean inStock = true;
char category = 'E';
// Print productId, price, inStock, and category each on a new line
// Your code here

Need a hint?

Use separate System.out.println statements for each variable.