Hello,
I'm still learning java and recently I had an assignment for the card class. I was asked how to make a method where only 1 dice is rolled and I have to option to pick 1 out of the 3 dice. "When you roll a Dice object, three dice are rolled. How can you roll just one of the die in the Dice object? How can you specify which die to roll?"
" What parameter should this method accept? i.e. does any value need to be sent to the method? (Hint: yes, there should be one parameter and it should be an integer) Think about your answers to these questions, then write an instance method, rollOneDie, that allows the user to roll a single die."
Here is the code:
public class Dice {
 
	// declare the instance variables - do not add additional
	// variable
	private int die1;
	private int die2;
	private int die3;
 
 
	/**
	 * Name: default constructor
	 * Description: intialize the three instance 
	 * variables with values of 0.
	 * 
	 */
	public Dice() {
		die1 = 0;
		die2 = 0;
		die3 = 0;
	}
 
	/**
	 * method name: toString method
	 * description: create and return a String with
	 * the values of the three instance variables
	 * 
	 * @return String with the values of the 
	 * three instance variables
	 */
	public String toString() {
		String str = new String(die1 + " " + die2 + " " + die3);
		return str;
 
 
	}
 
	/**
	 * method name: getdie1, getdie2, getdie3
	 * description: return the values stored in die1, die2, and die3 instance variables
	 * @return The values stored in the instance variables die1, die 2, and die 3 
	 */
	public int getdie1() {
		return die1;
	}
	public int getdie2() {
		return die2;
	}
	public int getdie3() {
		return die3;
	}
 
 
 
 
	/**
	 * method name: getDie1
	 * description: returns the integer value stored in the 
	 * die1 instance variable
	 * 
	 * @return the integer value stored in the die1 instance 
	 * variable
	 */
	// public int getDie1() {
		//return die1;
	//}
 
	/**
	 * method name: roll method
	 * description: "roll" all three dice - give random integer
	 * values between 1 and 6 to each die1, die2, and die3
	 */
	public void roll() {
 
		Random rand = new Random();
 
		// give die1 a random value between 1 and 6
		die1 = rand.nextInt(6) + 1;
 
		// give die2 a random value between 1 and 6
		die2 = rand.nextInt(6) + 1;
 
		// give die3 a random value between 1 and 6
		die3 = rand.nextInt(6) + 1;
	}
	/**
	 * Name; calcTotalRoll method Description:this method will 
	 *calculate the total of the three dice
	 *@return the sum of the dice
	 */
	public int calcTotalRoll() {
		return (die1 + die2 + die3);
 
	}
 
	/**
	 * Name:threeOfAKind method
	 * Description: this method will determine if all three
	 *  of the dice have the same value
	 * @return true if they have the same value, false otherwise
	 */
 
	public String threeOfAKind() {
		String s = new String();
		s = "Not three of a kind.";
		if(die1 == die2 && die2 == die3 && die3 == die1) {
		s = "Three of a kind.";
		}
		return s;
	}
	/**
	*Name:findHighestDiemethod
	* Description: this method will determine which of the three dice have the
	* highest value if two die have the same value, the first occurrence of the value
	* should be used
	* @return the value of the highest die
	*/
	public int findHighestDie( )
	   {
	      int highest;
	      if ((die1 >= die2) && (die1 >= die3))
	         highest = die1;
	      else if (die2 >= die3)  
	         // if code gets to this part, die1 is not highest so itís either 
	         // die2 or die3
	         highest = die2;
	      else
	         highest = die3;
 
	      return highest;
	   }
 
	public void rollOneDie() {
 
	}
 
 
}


--- Update ---

[code =Java]
public class Lab5App {

public static void main(String[] args) {

// declare myDice reference variable and instantiate
// a new Dice object
Dice myDice = new Dice();


// output the state of the object
System.out.println("After instantiation: " + myDice.toString());

// get and display the value of die1, die2, and die3
int val = myDice.getDie1();
System.out.println("\n" + "Value of die 1: " + val);
System.out.println("Value of die 2: " + val);
System.out.println("Value of die 3: " + val);


// roll the Dice (call the roll method)
myDice.roll();


// output the state of the object after rolling the Dice
System.out.println("\n" + "After rolling the dice: " + myDice);

//Output the sum of the three dice
int calcTotalRoll = myDice.calcTotalRoll();
System.out.println("\n" + "The roll total is " + calcTotalRoll);

// output whether the values of die1, die2, and die3 are the same value
String threeOfAKind = myDice.threeOfAKind();
System.out.println("\n" + threeOfAKind);

int findHighestDie = myDice.findHighestDie();
System.out.println("\n" + "The highest value of the three dice is " + findHighestDie );

System.out.println("\n" + "Rolling die 1 only: ");
System.out.println("Rolling die 2 only: ");
System.out.println("Rolling die 3 only: ");






}
}
[/code]