Solved machine task

[MartaRusanovska]

No description provided.

[mateacademy-ai-mentor]

Review Summary

Great job implementing the class hierarchy and the required methods. The core functionality of your solution is correct. However, some changes are needed before this can be approved.

The main issue is in MainApp.java. You should use the abstract Machine type for your variable references to properly apply the principle of polymorphism, as required by the task. For example, instead of Excavator excavator = new Excavator();, it should be Machine excavator = new Excavator();. This is a key concept for this task and a violation of [CHECKLIST ITEM #3].

Additionally, please remove the redundant empty lines after the class declarations in Machine.java and MainApp.java to adhere to the coding style guidelines [CHECKLIST ITEM #1].

Once you've made these adjustments, your solution will be ready!

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[mateacademy-ai-mentor]

This violates checklist item #1: 'Please don't add redundant empty lines to your code.' The empty lines after the class declaration and between method declarations should be removed.

[mateacademy-ai-mentor]

This violates checklist item #3: 'Use abstract references instead of specific ones where possible'. To better leverage polymorphism, you should declare these variables using the abstract Machine type, for example: Machine excavator = new Excavator();. An even more concise approach would be to instantiate the objects directly within the array initialization on the next line.

[mateacademy-ai-mentor]

Review Summary

Excellent work on this task! I am approving your solution. You've successfully implemented polymorphism by using the abstract Machine type for your variables, which was the main point from the previous review. The core logic is correct and meets all requirements.

Just a couple of minor points for you to consider for future tasks to make your code even better:

• In MainApp.java, the printInfo method could be made private since it's only used inside that class. This improves encapsulation [CHECKLIST ITEM #4].
• Be mindful of extra empty lines after class declarations, like the one in Machine.java, to maintain a consistent coding style [CHECKLIST ITEM #1].

These are just small style and best practice suggestions. Great job completing the task!

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[mateacademy-ai-mentor]

This empty line should be removed. As per checklist item #1, redundant empty lines after a class declaration are not allowed. This issue was also mentioned in the previous review.

[mateacademy-ai-mentor]

This method is only used within the MainApp class. To follow the principle of encapsulation, it's better to limit its visibility. Consider using a more restrictive access modifier, which aligns with checklist item #4.