String comparison in Java - Mini Project: Build & Apply

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String comparison

📖 Scenario: You are creating a simple program to compare two strings representing user input and a stored password.

🎯 Goal: Build a Java program that compares two strings to check if they are exactly the same.

📋 What You'll Learn

Create two string variables with exact values

Add a boolean variable to store the comparison result

Use the equals method to compare the strings

Print the comparison result

💡 Why This Matters

🌍 Real World

String comparison is used in login systems to check if a user entered the correct password.

💼 Career

Understanding string comparison is essential for software developers working on authentication, data validation, and user input handling.

1

Create two string variables

Create two string variables called input and password with the exact values "OpenSesame" and "OpenSesame" respectively.

Java

# Create two string variables 'input' and 'password' with values "OpenSesame" and "OpenSesame"
// Your code here

💡 Need a hint?

Use String input = "OpenSesame"; and String password = "OpenSesame";

2

Add a boolean variable for comparison

Add a boolean variable called isMatch to store the result of comparing input and password.

Java

String input = "OpenSesame";
String password = "OpenSesame";
// Add a boolean variable 'isMatch' to store comparison result
// Your code here

💡 Need a hint?

Declare boolean isMatch; without assigning a value yet.

3

Compare the strings using equals method

Assign to isMatch the result of comparing input and password using the equals method.

Java

String input = "OpenSesame";
String password = "OpenSesame";
boolean isMatch;
// Assign to isMatch the result of input.equals(password)
// Your code here

💡 Need a hint?

Use isMatch = input.equals(password); to compare strings.

4

Print the comparison result

Print the value of isMatch using System.out.println.

Java

String input = "OpenSesame";
String password = "OpenSesame";
boolean isMatch;
isMatch = input.equals(password);
// Print the value of isMatch
// Your code here

💡 Need a hint?

Use System.out.println(isMatch); to show the result.