CODEWITHSUNDEEP
java
samscript
samscript

Reputation: 139

Is there a way to set a range for an int? And when outside that range for a certain int, a different int increments by 1

Building a program that will have imperial weights (stones, pounds and ounces), and I need ranges for the pounds and ounces (ie ounces 0-15), once the ounces int goes above 15, then pounds will increment by 1, with the same happening to pounds so that stones increments by 1.

I am fairly new to Java so this is new to me and I've no idea how to get it started.

public class NewWeight {

    private int stones = 0;
    private int pounds = 0;
    private int ounces = 0;

    public NewWeight (int stones, int pounds, int ounces) {
        ...

Say when there is an input of 18 ounces, the output would be 1 pound and 2 ounces, another example being 224 ounces so that the output would end up being 1 stone, 0 pounds, 0 ounces

Upvotes: 1

Views: 51

Answers (1)

Sweeper
Sweeper

Reputation: 272370

You don't have to use 3 variables ounces, pounds and stones here. All these three represent one quantity - weight.

You can just store the weight in ounces and nothing else:

private int weightInOunces;

Then you can add methods such as getPounds, getStones and getOunces, which do maths on weightInOunces.

For example:

public int getPounds() {
    return weightInOunces % 224 / 16;
}

public int getOunces() {
    return weightInOunces % 16;
}

public int getStones() {
    return weightInOunces / 224;
}

Setters could be implemented like this:

public int setPounds(int pounds) {
    int stones = getStones();
    weightInOunces = stones * 244 + getOunces() + pounds * 16;
}

public int setOunces(int ounces) {
    int pounds = getPounds();
    weightInOunces = pounds * 16 + ounces;
}

public int setStones(int stones) {
    weightInOunces = stones * 244 + weightInOunces % 244;
}

The constructor could be implemented like this:

public Weight(int stones, int pounds, int ounces) {
    weightInOunces = stones * 224 + pounds * 16 + ounces;
}

To achieve the output, you can also add a toString method that outputs the weight in the format x stones, x pounds, x ounces.

Upvotes: 3

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