Top 8 Usages of ChatGPT for Java Developers & Programmers

javatechonline blog
6 min readSep 25, 2023

ChatGPT is an AI-powered language model designed to assist Java developers in various aspects of software development. It can generate code snippets, troubleshoot issues, and provide code reviews, helping developers write cleaner and more efficient Java code.

ChatGPT for Developers

ChatGPT also serves as a learning resource, explaining Java concepts and offering algorithm and design guidance. With its natural language processing capabilities, ChatGPT simplifies coding tasks, making it a valuable tool for both experienced and novice Java developers seeking code-related solutions and insights.

Let’s talk about top 5 usages of ChatGPT for Java Developers and Programmers one by one:

1. Code Generation and Examples

ChatGPT can generate code snippets and provide examples for specific tasks, algorithms, or coding challenges in Java. It’s a valuable resource for getting code that solves your programming problems quickly.

Let’s ask ChatGPT to generate code for us:

ChatGPT Prompt: Take an array of 7 random integers, find the odd numbers out of them, and print the output in console. Can you write a progrom using Java 8 to acieve this? Also, write the output to validate.

ChatGPT Response:

ChatGPT to generate Java Code

2. Troubleshooting and Debugging

If you face issues in your Java code that you are unable to resolve, you can describe the problem to ChatGPT, and it can provide insights, suggestions, and even help identify potential bugs or errors.

ChatGPT Prompt: One of my code snippet wrtitten in Java is not functioning well. I suspect some bug in it. I will provide you the same. Can you suggest me the resolution or suggestion to fix it?

public class BugExample {
public static void main(String[] args) {
int[] numbers = {1, 2, 3, 4, 5};
int sum = 0;
for (int i = 1; i <= numbers.length; i++) {
sum += numbers[i];
}
System.out.println("Sum of numbers: " + sum);
}
}

ChatGPT Response:

ChatGPT response for Bug in Java Code

3. Code Migration

You may or may not have heard of it, but this is possible using ChatGPT. As Oracle is releasing new version of Java in every six month’s gap, the migration activity may become essential for a Java Developer.

Suppose that you are working in a legacy project and suddenly got an assignment to migrate your code using atleast Java 8. ChatGPT can assist in migrating your Java code using best practices, coding standards, and potential improvements. It can also help you ensure that your code is clean, efficient, and maintainable.

Let’s try migrating a Java code snippet from lower versions to Java 8 version with the help of ChatGPT.

ChatGPT Prompt: I have a code snippet written using lower versions of Java. I want to migrate it using Java 8. Can you convert this code snippet using Java 8?

import java.util.ArrayList;
import java.util.List;

public class FilterStringsJava7 {
public static void main(String[] args) {
List<String> strings = Arrays.asList("Java", "Scala", "Python", "Angular", "React");

for (String str : strings) {
if (str.contains("v")) {
filteredStrings.add(str);
}
}
System.out.println("Original List: " + strings);
System.out.println("Filtered List (Containing 'v'): " + filteredStrings);
}
}

ChatGPT Response:

ChatGPT for Code Migration

4. Learning and Concept Explanation

Java developers, especially those new to the language, can use ChatGPT to explain Java concepts, language features, and programming principles. It’s like having a virtual instructor to clarify your doubts.

Let’s ask ChatGPT to explian a concept in Java.

ChatGPT Prompt: I am a beginner in Java. I want to learn a newly introduced type ‘record’ in Java 17. Can you explain me it in simple words with examples?

ChatGPT Response:

Certainly! In Java 17, a new type called record was introduced to simplify the creation of classes that are primarily used to hold data. Think of a record as a concise way to define a class whose main purpose is to store data, similar to a traditional Java class with fields, getters, setters, and equals() and hashCode() methods. Here's a simple explanation with examples:

Defining a Record:

A record is defined using the record keyword followed by the name of the record and a list of components, which represent the data fields. Each component defines a field's name and type. Here's an example of a record representing a Point with x and y coordinates:

public record Point(int x, int y) {
}

Implicit Methods:

When you define a record, Java automatically generates several methods for you, including constructors, equals(), hashCode(), and toString(). You don't need to write these methods yourself. For example:

Point p1 = new Point(1, 2); 
Point p2 = new Point(1, 2);
System.out.println(p1.equals(p2)); // true
System.out.println(p1.hashCode()); // Some auto-generated hash code
System.out.println(p1.toString()); // "Point[x=1, y=2]"

Immutable by Default:

record instances are immutable by default, which means their values cannot be changed after they are created. If you want to modify a record, you must create a new instance with the updated values.

Concise and Readable:

records are concise and make your code more readable because they eliminate the need to write boilerplate code for data classes. You don't need to write getters, setters, or equals() and hashCode() methods.

Use Cases:

records are excellent for modeling data structures, such as representing data from a database, JSON, or user input. They are especially handy for transferring data between different parts of your application.

Example with Custom Methods:

You can also define custom methods in a record. For example, you can add a method to calculate the distance between two points:

public record Point(int x, int y) {
public double distanceTo(Point other) {
int dx = x - other.x;
int dy = y - other.y;
return Math.sqrt(dx * dx + dy * dy);
}
}

To summarize, in Java 17, a record is a simple and convenient way to define classes for storing data. It comes with implicit methods, is immutable by default, and reduces boilerplate code, making your Java code cleaner and more readable.

5. Display Output at Console

When we need to verify the output of a program, there are two ways to achieve it; either we run the program in our local system having JDK, JRE etc. installed or we can use an online compiler. Now we can just ask ChatGPT to provide the output of the program after inputting it in the prompt. It will display the output.

6. Add Comments to your Code

Writting comments along with the code might be very frustrating task for programmers. ChatGPT can do this for you. We just need to provide prompt with inputting code snippet, it will add comments to the code in a simple language which is easily understandable by anyone else.

7. Interview Preparation

Assign a role of Interviewer to ChatGPT and brief it for other required details as per your requirement. It will work as a virtual interviewer for you. Moreover, you can prepare for technical interviews by practicing coding challenges with ChatGPT. It can help you understand problem-solving approaches and provide hints for solving complex questions.

8. Language and Framework Documentation

We can ask ChatGPT for explanations of language features, library functions, or framework documentation. It can provide clear explanations and examples to help us understand and use them efficiently.

Remember that although ChatGPT is a helpful tool, but it’s important to verify the code and recommendations it provides, as it may not always provide context-specific solutions. Combining ChatGPT’s assistance with your own coding skills and best practices is the best way to utilize it.

The list is even not complete. Want to know more how ChatGPT can help Java developers with a lot of examples, kindly visit javatechonline.

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