Assignment operators in Java - Mini Project: Build & Apply

Using Assignment Operators in Java

📖 Scenario: Imagine you are managing a simple bank account system where you need to update the balance after deposits and withdrawals using assignment operators.

🎯 Goal: You will create a Java program that uses assignment operators to update a bank account balance step-by-step.

📋 What You'll Learn

Create an integer variable balance with an initial value

Create an integer variable deposit with a specific value

Use the += assignment operator to add the deposit to the balance

Create an integer variable withdrawal with a specific value

Use the -= assignment operator to subtract the withdrawal from the balance

Print the final balance

💡 Why This Matters

🌍 Real World

Banking apps and financial software often update account balances using assignment operators.

💼 Career

Understanding assignment operators is essential for writing efficient and clear code in many programming jobs.

1

Create the initial balance

Create an integer variable called balance and set it to 1000.

Java

// Your code here

Need a hint?

Use int balance = 1000; to create the variable.

2

Add a deposit amount

Create an integer variable called deposit and set it to 500. Then use the += assignment operator to add deposit to balance.

Java

int balance = 1000;
// Your code here

Need a hint?

Use balance += deposit; to add the deposit to the balance.

3

Subtract a withdrawal amount

Create an integer variable called withdrawal and set it to 200. Then use the -= assignment operator to subtract withdrawal from balance.

Java

int balance = 1000;
int deposit = 500;
balance += deposit;
// Your code here

Need a hint?

Use balance -= withdrawal; to subtract the withdrawal from the balance.

4

Print the final balance

Write a System.out.println statement to print the text "Final balance: " followed by the value of balance.

Java

int balance = 1000;
int deposit = 500;
balance += deposit;
int withdrawal = 200;
balance -= withdrawal;
// Your code here

Need a hint?

Use System.out.println("Final balance: " + balance); to print the result.