Develop a program to import different classes in package in Java

Develop a Program to Import Different Classes in a Package in Java

Table of Contents

• Introduction
• Packages in Java
• Importing Classes
• Java Code
• Code Output
• Conclusion

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Introduction

Java is a powerful programming language that allows you to organize your code into packages for better structure and maintainability. In this article, we will learn how to import different classes from packages in Java. This is a fundamental concept for Java developers and is essential for building modular and efficient code.

Packages in Java

A package in Java is a way to group related classes and interfaces together. It helps in organizing your code and avoids naming conflicts. Packages provide a namespace for the classes they contain. Java has a standard library of packages, and you can create your custom packages as well.

Importing Classes

To use classes from a different package, you need to import them into your Java program. There are two common ways to import classes:

• Import a specific class: You can import a single class from a package using the import statement.
• Import the entire package: You can import all the classes from a package using import package_name.*.

Java Code

Let's create a simple example to demonstrate how to import classes from different packages:

            
                import java.util.Date;
                import java.text.SimpleDateFormat;

                public class Main {
                    public static void main(String[] args) {
                        // Create a Date object
                        Date date = new Date();

                        // Create a SimpleDateFormat object
                        SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");

                        // Format the date
                        String formattedDate = dateFormat.format(date);

                        System.out.println("Current Date and Time: " + formattedDate);
                    }
                }
            
        

Code Output

When you run the above Java code, it will display the current date and time in the specified format:

            
                Current Date and Time: 25/09/2023 15:30:45
            
        

Conclusion

In this article, we learned how to import different classes from packages in Java. Understanding packages and importing classes is crucial for building organized and maintainable Java applications. By using packages and importing classes, you can effectively manage your code and avoid naming conflicts. This knowledge is essential for any Java developer.