Operator precedence in Java - Mini Project: Build & Apply

Operator precedence

📖 Scenario: You are creating a simple calculator program that evaluates an expression using different operators. Understanding the order in which Java applies these operators is important to get the correct result.

🎯 Goal: Build a Java program that calculates the value of an expression using operator precedence rules and prints the correct result.

📋 What You'll Learn

Create variables with given values

Use a configuration variable for a multiplier

Calculate an expression using operator precedence

Print the final result

💡 Why This Matters

🌍 Real World

Understanding operator precedence helps you write correct calculations in programs like calculators, financial software, or games.

💼 Career

Many programming jobs require you to write expressions that combine multiple operations correctly, so knowing operator precedence is essential.

1

Create initial variables

Create three integer variables called a, b, and c with values 5, 10, and 2 respectively.

Java

// Your code here

Need a hint?

Use the syntax int variableName = value; to create each variable.

2

Add a multiplier variable

Create an integer variable called multiplier and set it to 3.

Java

int a = 5;
int b = 10;
int c = 2;
// Your code here

Need a hint?

Remember to end the line with a semicolon.

3

Calculate expression with operator precedence

Create an integer variable called result and assign it the value of the expression a + b * c * multiplier. Use the exact variable names and operators as shown.

Java

int a = 5;
int b = 10;
int c = 2;
int multiplier = 3;
// Your code here

Need a hint?

Remember that multiplication happens before addition in operator precedence.

4

Print the result

Write a line to print the value of result using System.out.println.

Java

int a = 5;
int b = 10;
int c = 2;
int multiplier = 3;
int result = a + b * c * multiplier;
// Your code here

Need a hint?

Use System.out.println(result); to display the value.