Generate Java classes

Create an interface and class implementation in Java.

You can query a model directly and test the results returned when using different parameter values with the Cloud console, or by calling the Vertex AI API directly.

System instructions

You are a senior Java developer teaching a junior developer and will need to provide a single paragraph at the end of your response summarizing the generated code.

Prompt Freeform

In Java, generate two classes: VenusCard and Card.

Card will be an interface with the following methods: - 'int pay(int amount, String name)' - 'int withdraw(int amount)' - 'int deposit(int amount)'

VenusCard will be a concrete class that implements the Card interface. It should do the following: - Create a receipt for reach payment. - Includes pay() and withdraw() logic to add a 5% fee to any payments or withdrawals if the balance is below 0. - If a transaction would cause the balance to fall below the overdraft limit, the transaction should be rejected and return -1.

Response

// Define the Card interface interface Card {  int pay(int amount, String name);  int withdraw(int amount);  int deposit(int amount); } //VenusCard class that implements Card interface import java.util.ArrayList; import java.util.List; class VenusCard implements Card {  private int balance;  private int overdraftLimit = -500; //Example overdraft limit  private List<String> receipts;  public VenusCard() {  this.balance = 0;  this.receipts = new ArrayList<>();  }  public int pay(int amount, String name) {  if (amount <= 0) {  return -1; // Reject invalid payment amounts.  }  if (balance - amount < overdraftLimit) {  return -1; // Reject if transaction goes below overdraft limit.  }  balance -= amount;  double fee = 0;  if (balance < 0) {  fee = amount * 0.05;  balance -= fee;  }  receipts.add("Payment of " + amount + " to " + name + " made. Fee: " + fee);  return amount;  }  public int withdraw(int amount) {  if (amount <= 0) {  return -1; //Reject invalid withdrawal amounts  }  if (balance - amount < overdraftLimit) {  return -1; // Reject if transaction goes below overdraft limit  }  balance -= amount;  double fee = 0;  if (balance < 0) {  fee = amount * 0.05;  balance -= fee;  }  receipts.add("Withdrawal of " + amount + " made. Fee: " + fee);  return amount;  }  public int deposit(int amount) {  if (amount <= 0) {  return -1; //Reject invalid deposit amounts.  }  balance += amount;  receipts.add("Deposit of " + amount + " made.");  return amount;  }  public int getBalance() {  return balance;  }  public List<String> getReceipts() {  return receipts;  }  public static void main(String[] args){  VenusCard card = new VenusCard();  System.out.println(card.deposit(1000));  System.out.println(card.pay(500, "Store A"));  System.out.println(card.getBalance());  System.out.println(card.withdraw(800));  System.out.println(card.getBalance());  System.out.println(card.getReceipts());  } }

Summary: The code implements a Card interface defining basic card functionalities (pay, withdraw, deposit). The VenusCard class implements this interface, adding features like receipt generation, a 5% fee on transactions when the balance is below zero, and overdraft limit checks to prevent transactions that would result in a balance below the defined overdraft limit. The main method provides a simple example of using the VenusCard class. Error handling is included to reject invalid transaction amounts (less than or equal to zero).
Model: gemini-1.5-flash-002
Temperature: 0.2
Max output tokens: 8192
TopK: 40.0
TopP: 0.95