CODEWITHSUNDEEP
javaarraysmultidimensional-array
Pol Hallen
Pol Hallen

Reputation: 1862

array multidimensional

I study Java and I build a program with array:

com[0]="one";
com[1]="two";
com[2]="three";
[...]
com[9]="ten";

Every string of array is a commandment (my program is The 10 Commandment).

I'd like check if a commandment is already read. So, I think use a multidimensional array with string array and boolean array.

Is it possibile? What is the best way to do this?

thanks!

Upvotes: 0

Views: 163

Answers (3)

Peter Lawrey
Peter Lawrey

Reputation: 533472

Or you can use two collections

String[] commandments="zero,one,two,three,four,five,six,seven,eight,nine,ten".split(",");
BitSet read = new BitSet(commandments.length);

Upvotes: 1

asgoth
asgoth

Reputation: 35829

There is no need for a multidimensional array here, this only adds complexity. You just need a class Commandment:

public class Commandment {

   private String commandment;
   private boolean read;

   public Commandment(String commandment) {
      this.commandment = commandment;
   }

   public void setRead(boolean read) {
      this.read = read;
   }

   public boolean isRead() {
      return this.read;
   }
}

Then you create an array of Commandments:

com[0]= new Commandment("one");
com[1]= new Commandment("two");
com[2]= new Commandment("three");

To change to 'read':

com[2].setRead(true);

Upvotes: 3

user798182
user798182

Reputation:

Have a separate array, same length and the indexes of that relate to those in your String array.

Probably a better way is to create an object like

public class Commandment {
    private String com;
    private String read;
    public (String com) {
        this.com = com;
        this.read = false;
    }
    public getCom() {
        return com;
    }
    public isRead() {
        return read;
    }
    public beenRead() {
        read = true;
    }
}

And make an array of those objects instead.

Commandment[] coms = new Commandment[10];
coms[0] = new Commandment("com1");
System.out.println(coms[0].getCom()+", has been read? "+coms[0].isRead());
coms[0].beenRead();
System.out.println(coms[0].getCom()+", has been read? "+coms[0].isRead());

Will create it, put in the first commandment as "com1" and then check if its been read, make it read, and check it again.

Upvotes: 1

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