Import statement usage in Java - Mini Project: Build & Apply

folder_code

Import statement usage

📖 Scenario: You are creating a simple Java program that uses classes from the java.util package to work with lists.

🎯 Goal: Learn how to use import statements to include classes from other packages and use them in your Java program.

📋 What You'll Learn

Create a Java class named ImportExample

Import the ArrayList class from java.util package

Create an ArrayList of strings with some values

Print the contents of the ArrayList

💡 Why This Matters

🌍 Real World

Import statements let you use useful tools and classes made by others, so you don't have to write everything yourself.

💼 Career

Knowing how to import and use classes is essential for Java programming jobs, as most real projects use many libraries and packages.

1

Create the Java class and main method

Create a public class called ImportExample with a main method inside it.

Java

public class ImportExample {
    public static void main(String[] args) {
        // Your code here
    }
}

💡 Need a hint?

Start by writing public class ImportExample and add the main method inside it.

2

Add the import statement for ArrayList

Add an import statement to import java.util.ArrayList at the top of the file, before the class declaration.

Java

import java.util.ArrayList;

public class ImportExample {
    public static void main(String[] args) {
        // Your code here
    }
}

💡 Need a hint?

Write import java.util.ArrayList; at the very top of your file.

3

Create an ArrayList of strings

Inside the main method, create an ArrayList<String> called fruits and add these strings to it: "Apple", "Banana", "Cherry".

Java

import java.util.ArrayList;

public class ImportExample {
    public static void main(String[] args) {
        // Your code here
    }
}

💡 Need a hint?

Create the list with new ArrayList<>() and add items using add().

4

Print the ArrayList contents

Add a System.out.println statement inside the main method to print the fruits list.

Java

import java.util.ArrayList;

public class ImportExample {
    public static void main(String[] args) {
        ArrayList fruits = new ArrayList();
        fruits.add("Apple");
        fruits.add("Banana");
        fruits.add("Cherry");
        // Your code here
    }
}

💡 Need a hint?

Use System.out.println(fruits); to print the list.