How to use driver program?

I have this driver program....
how would I use a die class with it?
class is down below...

     public static void main(String[]args)      {              //Local Constants            final int MAX_ROLLS = 1000;   //Maximum number of rolls                        //Local Variables            int num1, num2;      //dice            int total;           //sum of a roll            boolean doubles;     //true if doubles has been rolled            int numDoubles = 0   //number of doubles rolled            int doubleValue;     //face value if doubles has been rolled                        //Instantiate two Objects of the external Class Die              Die die1 = new Die();    //create one die Object of Class Die              Die die2 = new Die();    //create a second die object of Class Die                            //Test the roll of one die              num1 = die1.roll();              num2 = die2.roll();              System.out.println("You have rolled a " + num1 + " and a " + num2);                            //Test the roll of one die              num1 = die1.roll();              num2 = die2.roll();              System.out.println("You have rolled a " + num1 + " and a " + num2);                            //Test returning the sum of a roll of a pair of dice              total = die.1sum(num1, num2);              System.out.println("You have rolled a " + total);                            //Test for number of doubles rolled out of 1000                  for (int numRolls = 1; numRolls  <=              MAX_ROLLS;numRolls++)                  {                        //Roll two dice                        num1 = die1.roll();                        num2 = die2.roll();                        //Determine if doubles has been rolled                                                doubles = die1.isDoubles(num1,num2);                                                if(doubles == true)                           numDoubles++;                  }                  //Display number of doubles rolled                  System.out.println("You have rolled doubles " + numDoubles + " out of 1000 rolls.");                                    //Test for face value if doubles is rolled do                  {                        //Roll two dice                        num1 = die1.roll();                        num2 = die2.roll();                              //Determine if doubles has been rolled                                                doubleValue = die1.faceValue(num1, num2);                  }                        while(doubleValue == 0);  //Stop when doubles are rolled                                                //Display face value of doubles                        System.out.println("You have rolled a double " + doubleValue + ".");                        }//end main                        //end text                            public class Die


die class:

import java.util.Random; public class Die1 // begin class definition { final int MAX = 6; int faceValue; public  Die() // constructor { } public int roll()// roll of the 6 sided die { Random generator = new Random(); faceValue= generator.nextInt(6) +1; return faceValue; } public int sum (int num1, int num2) { int sum; sum = num1 + num2; return sum; } public Boolean isDoubles(int num1, int num2) { if (num1 == num2) return true; else return false; } public int faceValue(int num1, int num2) { return faceValue; }

On lines 14 and 15 of your "driver" program, you're already using the Die class.

Did you not write this driver program? If you did, you really should format and indent it properly.  Your program looks worse than a crooked fence: https://www.flickr.com/photos/raisinsawdust/2236667428

Improper formatting and indentation is very bad form. It makes your code less or unreadable and it creates a greater likelihood for bugs to be present in the code.

One problem that you'll want to fix is your Die class declaration.  On line 3, you declare a Die1 class.  On line 10 you try to declare a constructor using a different name, Die.  The class name and the constructor names must match.  In your driver program, you are using the name Die. So, decide which name you want to use, Die1 or just Die, then use it consistently.

About your post: first, TellTheDetails (that's a link).  What have you tried?  What didn't work?  Was there an error message.

Next, EaseUp.  Your original subject line was all caps with five question marks.

Junilu Lacar wrote:On lines 14 and 15 of your "driver" program, you're already using the Die class.

Did you not write this driver program? If you did, you really should format and indent it properly.  Your program looks worse than a crooked fence: https://www.flickr.com/photos/raisinsawdust/2236667428

Improper formatting and indentation is very bad form. It makes your code less or unreadable and it creates a greater likelihood for bugs to be present in the code.

then why wont it compile???

I even changed the name of Die1 class to Die cause I think that's what it needs to be.

program4.java:2: error: class, interface, or enum expected { ^ program4.java:3: error: class, interface, or enum expected      public static void main(String[]args)                    ^ program4.java:6: error: class, interface, or enum expected            final int MAX_ROLLS = 1000;   //Maximum number of rolls                  ^ program4.java:9: error: class, interface, or enum expected            int num1, num2;      //dice            ^ program4.java:10: error: class, interface, or enum expected            int total;           //sum of a roll            ^ program4.java:11: error: class, interface, or enum expected            boolean doubles;     //true if doubles has been rolled            ^ program4.java:12: error: class, interface, or enum expected            int numDoubles = 0   //number of doubles rolled            ^ program4.java:16: error: class, interface, or enum expected              Die die1 = new Die();    //create one die Object of Class Die              ^ program4.java:17: error: class, interface, or enum expected              Die die2 = new Die();    //create a second die object of Class Die              ^ program4.java:20: error: class, interface, or enum expected              num1 = die1.roll();              ^ program4.java:21: error: class, interface, or enum expected              num2 = die2.roll();              ^ program4.java:22: error: class, interface, or enum expected              System.out.println("You have rolled a " + num1 + " and a " + num2);              ^ program4.java:25: error: class, interface, or enum expected              num1 = die1.roll();              ^ program4.java:26: error: class, interface, or enum expected              num2 = die2.roll();              ^ program4.java:27: error: class, interface, or enum expected              System.out.println("You have rolled a " + num1 + " and a " + num2);              ^ program4.java:30: error: class, interface, or enum expected              total = die.1sum(num1, num2);              ^ program4.java:31: error: class, interface, or enum expected              System.out.println("You have rolled a " + total);              ^ program4.java:34: error: class, interface, or enum expected                  for (int numRolls = 1; numRolls  <=                  ^ program4.java:34: error: class, interface, or enum expected                  for (int numRolls = 1; numRolls  <=                                         ^ program4.java:35: error: class, interface, or enum expected              MAX_ROLLS;numRolls++)                        ^ program4.java:39: error: class, interface, or enum expected                        num2 = die2.roll();                        ^ program4.java:42: error: class, interface, or enum expected                        doubles = die1.isDoubles(num1,num2);                        ^ program4.java:44: error: class, interface, or enum expected                        if(doubles == true)                        ^ program4.java:46: error: class, interface, or enum expected                  }                  ^ program4.java:51: error: class, interface, or enum expected                  {                  ^ program4.java:54: error: class, interface, or enum expected                        num2 = die2.roll();                              ^ program4.java:57: error: class, interface, or enum expected                        doubleValue = die1.faceValue(num1, num2);                        ^ program4.java:58: error: class, interface, or enum expected                  }                  ^ program4.java:62: error: class, interface, or enum expected                        System.out.println("You have rolled a double " + doubleValue + ".");                        ^ program4.java:63: error: class, interface, or enum expected                        }//end main                        ^

I KEEP GETTING THESE COMPILE ERRORS

Junilu Lacar wrote:One problem that you'll want to fix is your Die class declaration.  On line 3, you declare a Die1 class.  On line 10 you try to declare a constructor using a different name, Die.  The class name and the constructor names must match.  In your driver program, you are using the name Die. So, decide which name you want to use, Die1 or just Die, then use it consistently.

I realized that and I changed it.  still getting compile errors

1. You haven't shown your full source. That makes it a little more difficult to decipher compiler error messages.

2. When you get a cascade of compile-time errors, you want to fix the first reported error first. Once the first problem gets fixed, it usually gets rid of many of the subsequent compiler errors that don't make much sense. Then you just keep attacking problems the same way until you get rid of all the errors.

Ed Palazo wrote:
I KEEP GETTING THESE COMPILE ERRORS

Please don't use all capital letters; it's equivalent to shouting and it's considered rude. Ease up and chill out. Otherwise, you'll be put on probation.

program4.java:32: error: ';' expected              total = die.1sum(num1, num2);

now I'm getting just one error when I try to compile driver.  I'm trying to fix things as we speak

Junilu Lacar wrote:

Ed Palazo wrote:
I KEEP GETTING THESE COMPILE ERRORS

Please don't use all capital letters; it's equivalent to shouting and it's considered rude. Ease up and chill out. Otherwise, you'll be put on probation.

ok got it

Ed Palazo wrote:program4.java:32: error: ';' expected              total = die.1sum(num1, num2);

now I'm getting just one error when I try to compile driver.

Look at the method name that you're trying to invoke. Is that the actual name of the method (it can't be because method names can't start with a number)? What's the actual method name then?

Junilu Lacar wrote:

Ed Palazo wrote:program4.java:32: error: ';' expected              total = die.1sum(num1, num2);

now I'm getting just one error when I try to compile driver.

Look at the method name that you're trying to invoke. Is that the actual name of the method (it can't be because method names can't start with a number)? What's the actual method name then?

yea I changed it to Die.sum.  is that correct?

program4.java:18: error: cannot find symbol              Die die1 = new Die();    //create one die Object of Class Die              ^  symbol:   class Die  location: class program4 program4.java:18: error: cannot find symbol              Die die1 = new Die();    //create one die Object of Class Die                             ^  symbol:   class Die  location: class program4 program4.java:19: error: cannot find symbol              Die die2 = new Die();    //create a second die object of Class Die              ^  symbol:   class Die  location: class program4 program4.java:19: error: cannot find symbol              Die die2 = new Die();    //create a second die object of Class Die                             ^  symbol:   class Die  location: class program4 program4.java:32: error: cannot find symbol              total = Die.sum(num1, num2);                      ^  symbol:   variable Die  location: class program4 5 errors

now I'm getting new errors

Please post the full source code.  Without that it's hard to make sense of the error messages.  My guess is you need to import your Die class.

I have these two codes,
one is driver and another is class

The Class Die that you create will include a separate method to perform each of the following:
 
Roll one die and return the value.
Send the method a pair of dice and it will return the sum of the pair.
Send the method a pair of dice and it will return a true if doubles has been rolled.  
Send the method a pair of dice and it will return the face value if doubles has been rolled.


     public class program4{            public static void main(String[]args)      {              //Local Constants            final int MAX_ROLLS = 1000;   //Maximum number of rolls                                  //Local Variables            int num1, num2;      //dice            int total;           //sum of a roll            boolean doubles;     //true if doubles has been rolled            int numDoubles = 0;   //number of doubles rolled            int doubleValue;     //face value if doubles has been rolled                        //Instantiate two Objects of the external Class Die              Die die1 = new Die();    //create one die Object of Class Die              Die die2 = new Die();    //create a second die object of Class Die                            //Test the roll of one die              num1 = die1.roll();              num2 = die2.roll();              System.out.println("You have rolled a " + num1 + " and a " + num2);                            //Test the roll of one die              num1 = die1.roll();              num2 = die2.roll();              System.out.println("You have rolled a " + num1 + " and a " + num2);                            //Test returning the sum of a roll of a pair of dice              total = Die.sum(num1, num2);              System.out.println("You have rolled a " + total);                            //Test for number of doubles rolled out of 1000                  for (int numRolls = 1; numRolls  <=              MAX_ROLLS;numRolls++)                  {                        //Roll two dice                        num1 = die1.roll();                        num2 = die2.roll();                        //Determine if doubles has been rolled                                                doubles = die1.isDoubles(num1,num2);                                                if(doubles == true)                           numDoubles++;                  }                  //Display number of doubles rolled                  System.out.println("You have rolled doubles " + numDoubles + " out of 1000 rolls.");                                    //Test for face value if doubles is rolled do                  {                        //Roll two dice                        num1 = die1.roll();                        num2 = die2.roll();                              //Determine if doubles has been rolled                                                doubleValue = die1.faceValue(num1, num2);                  }                        while(doubleValue == 0);  //Stop when doubles are rolled                                                //Display face value of doubles                        System.out.println("You have rolled a double " + doubleValue + ".");                        }                        }//end main                        //end text                            


import java.util.Random; public class Die // begin class definition { final int MAX = 6; int faceValue; public  Die() // constructor { } public int roll()// roll of the 6 sided die { Random generator = new Random(); faceValue= generator.nextInt(6) +1; return faceValue; } public int sum (int num1, int num2) { int sum; sum = num1 + num2; return sum; } public Boolean isDoubles(int num1, int num2) { if (num1 == num2) return true; else return false; } public int faceValue(int num1, int num2) { return faceValue; }

Your implementation does not match the requirements. If the requirements say you're supposed to "send the method a pair of dice" then why are you declaring methods that take a pair of int instead?

I think I have to match up the names from both the driver and the class?

Junilu Lacar wrote:Your implementation does not match the requirements. If the requirements say you're supposed to "send the method a pair of dice" then why are you declaring methods that take a pair of int instead?

I kinda understand what you are talking about.  so what is the correct way of fixing this and can you be a little more descriptive of the problem?

I suspect you don't have the Die class in the same folder as program4.  That is probably the easiest solution.  Otherwise you'll need to use package names.

Knute Snortum wrote:I suspect you don't have the Die class in the same folder as program4.  That is probably the easiest solution.  Otherwise you'll need to use package names.

I'm using jgrasp.

what would I do to put it in same folder?

just throw it under same file?

I've never use jgrasp, so I can't help you there.  But putting the Die class in the same file as program4 will work, as long as you don't declare Die coderanch.

Ed Palazo wrote:

Junilu Lacar wrote:Your implementation does not match the requirements. If the requirements say you're supposed to "send the method a pair of dice" then why are you declaring methods that take a pair of int instead?

I kinda understand what you are talking about.  so what is the correct way of fixing this and can you be a little more descriptive of the problem?

I don't know how much more descriptive I can get. You were told to write methods that take a pair of Die objects as their parameters and instead you wrote methods that take int values.  How do you fix it? I think maybe you need to think a little bit.

If your boss says to you, "Hey, I want you to get a box and put two apples in it"  and then you go and give him a box that has two hats in it, what do you think you should do to fix the problem when your boss yells at you and says you didn't do what he asked you to do?

And if you don't see the connection between "Send the method a pair of dice ..." and the parameters you declare in the method signature, it's this:

A method can be thought of as a "message" that an object responds to.  That is, when you write System.out.println(...), you're basically telling the System.out object to println(...) whatever thing you pass to it inside the parentheses.  In other words, you are sending the System.out object a message to print a line that contains the String representation of the things being passed to it inside the parenthesis.  The message you are "sending" to the System.out object is the "println" command and it includes whatever is inside the parentheses, which are called parameters.  The parameters are what tell the System.out object exactly what to print on a line.

So, when your instructions tell you to "Send the method a pair of dice", that implies that your method takes a pair of Die objects as its parameters. You are not following instructions by defining the method as taking a pair of int instead.

Does that make sense?