Скачать или смотреть How to Call Methods with Parameters from Another Class in Java

Learn how to effectively call methods with parameters between classes in Java, including shuffling a deck of cards in a card game.
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Calling Methods with Parameters from Another Class in Java

When developing applications in Java, you might find yourself needing to call methods from one class within another class, especially when dealing with more complex structures like card games. In this guide, we'll walk through a practical example of how to efficiently call methods with parameters from another class, specifically in the context of a card game you might be building.

The Problem: Understanding the Structure

In your card game, you have a Card class that generates a deck of cards. This class includes methods for creating the card deck and shuffling those cards. The challenge arises when you want to call the shuffle method from your Game class but face issues due to the parameters of the method. Here is a brief overview of the current structure of the Card class:

Card Class: Generates a deck of cards using CardDeck() and shuffles them with Collections().

Game Class: Calls CardDeck() and intends to call Collections() to shuffle the cards.

The main issues are:

The Collections method is not structured properly to be called effectively from another class.

Parameters are causing confusion when trying to invoke methods across classes.

The Solution: Refactoring Methods for Clarity

To address these issues, let’s refactor the methods in the Card class to make them easier to use from the Game class. Here’s how:

Step 1: Modify the CardDeck Method

Instead of printing the deck directly in CardDeck, let's return the list of cards so the calling function can manage it afterward. Here’s the revised code:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Update the Shuffle Method

Next, let’s rename and modify the shuffle method. It should now accept the list of cards and a seed for randomization without printing the shuffled cards, allowing for better control by the caller:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Update the Main Method in the Game Class

Finally, the main method in the Game class needs to be updated to follow the new method structures. Here’s how it should look:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion: Enhanced Structure for Better Functionality

With these changes, you will be able to effectively call methods with parameters across your classes. The Card class now provides a cleaner interface for generating and shuffling cards, while the Game class can easily manage the flow of the game without confusion. Remember to maintain clear method names and parameter management for better readability and functionality in your codebase.

By following this structure, you should be able to implement more complex features in your card game or any other Java-based applications with ease. Happy coding!