[Solved] Print a for-loop, Java

Question

There are multiple things.

One is that some of your code is unnecessary.

public Dice(int dice1   /*, int a, int b, int c, int d, int e, int f*/  ){
    this.dice1 = dice1;
    //this.a = a;
    //this.b = b;
    //this.c = c;
    //this.d = d;
    //this.e = e;
    //this.f = f;
}

You don’t need the commented lines of code because they will reset the integers a-f and that is already being done. That also means that you don’t need the variables a-f in the Head class.

public class Head {
public static void main(String[] args) {

    //int a=0;
    //int b=0;
    //int c=0;
    //int d=0;
    //int e=0;
    //int f=0;

    for(int i=0; i<5; i++){
        int dice1 = 1 + (int)(Math.random() * ((6 - 1) + 1));

        Dice diceObject = new Dice(dice1    /*, a, b, c, d, e, f*/  );
        diceObject.countNumbers();      
        diceObject.saveResults();
    }
    System.out.println("A B C D E F");
    Dice.displayResults();
} }

Again, the snips of code not needed are commented out.

The next thing is that when you write the code

System.out.println(diceObject);

that doesn’t work because diceObject is an instance of a class (Dice) and it isn’t a variable.

The way I got everything to work was by having the variables sa, sb, sc, sd, se, and sf added.

private static int sa = 0, sb = 0, sc = 0, sd = 0, se = 0, sf = 0;

I added these so that the results from each time the loop runs will be saved. I created a void to do this called saveResults(); The variables had to be static because the void was static too. I made the displayResults void (i’ll get into that later) static so it could be accessed from a the Head class.

public void saveResults() {
    sa += a;
    sb += b;
    sc += c;
    sd += d;
    se += e;
    sf += f;
}

The += just means to add;
The last thing I did was make the displayResults void. It just displays the variables sa-sf using System.out.println();

public static void displayResults() {
    System.out.println(sa + " " + sb + " " + sc + " " + sd + " " + se + " " + sf);
}

This all went together to make the final product. Here is the code:
Head class:

public class Head {
public static void main(String[] args) {

    for(int i=0; i<5; i++){
        int dice1 = 1 + (int)(Math.random() * ((6 - 1) + 1));

        Dice diceObject = new Dice(dice1);
        diceObject.countNumbers();      
        diceObject.saveResults();
    }
    System.out.println("A B C D E F");
    Dice.displayResults();
}

}
Dice class:
public class Dice {
private int a=0, b=0, c=0, d=0, e=0, f=0;
private static int sa = 0, sb = 0, sc = 0, sd = 0, se = 0, sf = 0;
private int dice1;

public Dice(int dice1){
    this.dice1 = dice1; }
public int getDice1(){
    return dice1;
}
public void countNumbers(){     
    if (dice1 == 1){
        a++;
    }
    else if(dice1 == 2){
        b++;
    }
    else if(dice1 == 3){
        c++;
    }
    else if(dice1 == 4){
        d++;
    }
    else if(dice1 == 5){
        e++;
    }
    else if(dice1 == 6){
        f++;
    }
}

public void saveResults() {
    sa += a;
    sb += b;
    sc += c;
    sd += d;
    se += e;
    sf += f;
}

public static void displayResults() {
    System.out.println(sa + " " + sb + " " + sc + " " + sd + " " + se + " " + sf);
} }

I am a beginner at java too. And a coincidence, for some time I was trying to teach it to myself. There is a course on codecademy.com that teaches you the basics. I recommend it and it is free. Sorry it took long to post this answer, it took a while to figure out what was wrong.

Accepted Answer