Java Code Generator

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Generate hundreds of lines of Java code with one click. Completely free, no sign up required.

What Is Java Code Generator?

An AI Java Code Generator is an online tool that makes software development easier by using generative AI, machine learning, and natural language processing. Instead of writing code by hand, you can share your needs, and the generator creates the related Java code for you, saving you valuable time and reducing mistakes.

This tool works in a simple three-step process:

Input: You give the details that explain what you want your Java application to do.
Processing: The AI looks at your input, uses its training from many code examples, and understands what you need.
Output: The generator then creates the appropriate Java code based on what it analyzed, ready for you to use or improve.

How Does Minary’s Java Code Generator Work?

Here’s how Minary’s AI Java Code Generator works. Start by filling in the ‘Describe the task in detail’ field on the left. Here, you explain exactly what you need—whether it’s creating a simple Java program to calculate factorials or a complex application that connects to a database. The more specific you are, the better the AI will understand your request.

After you provide a detailed prompt, click the ‘Generate’ button. The generator uses advanced algorithms to analyze your input and produce relevant Java code. On the right side, you’ll see the generated code appear almost instantly for you to review.

The code section is not just for viewing; you can easily copy it for your own projects by clicking the ‘Copy’ button at the bottom. This allows you to transfer your code directly into your development environment with no hassle.

Your interaction doesn’t stop there. You can rate the generated code using feedback vote buttons. Your feedback is important—by rating the code as good or needing improvement, you help train and improve the AI. This creates a positive cycle that enhances the tool over time.

Here are a couple of examples of detailed prompts:
1. “Write a Java program that takes user input and stores it in an ArrayList, then outputs the sorted list.”
2. “Generate a basic Java application that connects to a MySQL database to perform CRUD operations on a ‘Users’ table.”

The clearer and more detailed your descriptions, the more precise and useful the generated code will be.

Examples Of Generated Java Code

Create a program that implements a simple text-based game where the player is presented with a series of choices that affect the outcome of the story. The user should start with 100 health points and can choose different paths that can either increase or decrease their health based on their choices. At the end of the game, display the player’s final health points and a message indicating whether they survived or perished.

“`java
import java.util.Scanner;

public class TextBasedGame {
private static int healthPoints = 100;

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println(“Welcome to the Adventure Game!”);
System.out.println(“You start with 100 health points.”);

while (healthPoints > 0) {
System.out.println(“nYou find yourself at a crossroads. Do you want to go (1) left towards the forest or (2) right towards the village?”);
int choice = scanner.nextInt();

switch (choice) {
case 1:
enterForest(scanner);
break;
case 2:
enterVillage(scanner);
break;
default:
System.out.println(“Invalid choice. Please choose 1 or 2.”);
}
}

endGame();
scanner.close();
}

private static void enterForest(Scanner scanner) {
System.out.println(“You venture into the dark forest.”);
System.out.println(“Suddenly, a wild animal appears! Do you want to (1) fight it or (2) run away?”);
int choice = scanner.nextInt();

if (choice == 1) {
System.out.println(“You bravely fight the animal and win!”);
healthPoints += 20; // Gain health
System.out.println(“You gain 20 health points! Health: ” + healthPoints);
} else if (choice == 2) {
System.out.println(“You ran away safely but hurt yourself in the process.”);
healthPoints -= 10; // Lose health
System.out.println(“You lose 10 health points! Health: ” + healthPoints);
} else {
System.out.println(“Invalid choice. You stood still and were attacked!”);
healthPoints -= 30; // Lose health
System.out.println(“You lose 30 health points! Health: ” + healthPoints);
}
}

private static void enterVillage(Scanner scanner) {
System.out.println(“You arrive in a village full of friendly people.”);
System.out.println(“They offer you food and drink. Do you want to (1) accept their offer or (2) decline?”);
int choice = scanner.nextInt();

if (choice == 1) {
System.out.println(“You enjoyed their hospitality and regained your strength.”);
healthPoints += 30; // Gain health
System.out.println(“You gain 30 health points! Health: ” + healthPoints);
} else if (choice == 2) {
System.out.println(“You declined their offer and felt weak from hunger.”);
healthPoints -= 20; // Lose health
System.out.println(“You lose 20 health points! Health: ” + healthPoints);
} else {
System.out.println(“Invalid choice. You offended the villagers and were chased away!”);
healthPoints -= 40; // Lose health
System.out.println(“You lose 40 health points! Health: ” + healthPoints);
}
}

private static void endGame() {
if (healthPoints > 0) {
System.out.println(“Congratulations! You survived with ” + healthPoints + ” health points remaining.”);
} else {
System.out.println(“You have perished… Your journey ends here.”);
}
}
}
“`

Create a program that generates a random password containing at least one uppercase letter, one lowercase letter, one number, and one special character. The user should be able to specify the desired length of the password. Once generated, display the password to the user.

“`java
import java.security.SecureRandom;
import java.util.Scanner;

public class PasswordGenerator {

private static final String UPPERCASE = “ABCDEFGHIJKLMNOPQRSTUVWXYZ”;
private static final String LOWERCASE = “abcdefghijklmnopqrstuvwxyz”;
private static final String DIGITS = “0123456789”;
private static final String SPECIAL_CHARACTERS = “!@#$%^&*()-_=+<>?”;
private static final String ALL_CHARACTERS = UPPERCASE + LOWERCASE + DIGITS + SPECIAL_CHARACTERS;

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);

System.out.print(“Enter the desired length of the password (minimum 4): “);
int length = scanner.nextInt();

if (length < 4) { System.out.println("Password length should be at least 4."); return; } String password = generatePassword(length); System.out.println("Generated Password: " + password); } private static String generatePassword(int length) { SecureRandom random = new SecureRandom(); StringBuilder password = new StringBuilder(length); // Ensure at least one character from each required category password.append(UPPERCASE.charAt(random.nextInt(UPPERCASE.length()))); password.append(LOWERCASE.charAt(random.nextInt(LOWERCASE.length()))); password.append(DIGITS.charAt(random.nextInt(DIGITS.length()))); password.append(SPECIAL_CHARACTERS.charAt(random.nextInt(SPECIAL_CHARACTERS.length()))); // Fill the rest of the password length for (int i = 4; i < length; i++) { password.append(ALL_CHARACTERS.charAt(random.nextInt(ALL_CHARACTERS.length()))); } // Shuffle the resulting password return shuffleString(password.toString()); } private static String shuffleString(String input) { char[] characters = input.toCharArray(); SecureRandom random = new SecureRandom(); for (int i = characters.length - 1; i > 0; i–) {
int j = random.nextInt(i + 1);
char temp = characters[i];
characters[i] = characters[j];
characters[j] = temp;
}
return new String(characters);
}
}
“`