I am trying to finish this final problem on my Java homework. Due to a death in the family I've missed a class and now am trying to get back on track.

Question

Write a driver class called GasPumpDriver that meets the following specifications:
• Prompt the user to enter a 16 digit credit card number, read as a string
• Prompt the user to enter a month/year from the credit card, in the format MM/YY, read as a string
• Prompt the user to enter a dollar amount to be spent on a gas purchase, read as a double
• Prompt the user to enter the price per gallon for unleaded gasoline, read as a double
• Prompt the user to enter the price per gallon for premium gasoline, read as a double
• Prompt the user to enter the price per gallon for super premium gasoline, read as a double
• Create a GasPump object.
• Call the set/insert methods with the dollar amounts.
• Call the “est” methods and print the values for:
o the number of unleaded gallons that can be purchased
o the number of premium gallons that can be purchased
o the number of super premium gallons that can be purchased
• Print the credit card information, in the following format, showing only the last 4 digits of the card number:
Card: XXXXXXXXXXXX1234 Month: 10 Year: 09

I was given this class which needs no changes:

public class GasPump {
private double unleadedPPG;
private double premiumPPG;
private double superPremiumPPG;
private double balance;

public GasPump() {
this.balance = 0.0;
}

public void setUnleadedPPG(double inPPG) {
this.unleadedPPG = inPPG;
}

public void setPremiumPPG(double inPPG) {
this.premiumPPG = inPPG;
}

public void setSuperPremiumPPG(double inPPG) {
this.superPremiumPPG = inPPG;
}

public void insert(double dollars) {
balance = balance + dollars;
}

public double estUnleadedGallons() {
return balance / unleadedPPG;
}

public double estPremiumGallons() {
return balance / premiumPPG;
}

public double estSuperPremiumGallons() {
return balance / superPremiumPPG;
}