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POCalling a method from outside a class in Java
 

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  1. POCalling a method from outside a class in Java
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    <p>This seems to be a common question on here but for all the ones I read, they seem to deal with different things.</p> <p>I'm writing a program with a main class that manages an array of objects of a different class, and I'm having difficulty calling a print() method from this second class, from within the main class.</p> <p>The Main class attempts to call print(), which is in the Unit class. The Unit class looks something like this:</p> <pre><code>public class Unit{ static int numOfUnits = 0; public Unit[] units = new Unit[8]; private int unitID; //constructors are here public void print(){ for (int i = 0; i &lt; units.length; i++) System.out.print(units[i].unitID); } public void add(Unit unit){ mobs[numbofUnits] = unit; numOfUnits++; } } </code></pre> <p>So what I'd like to happen is, through the Main class, I add new Unit objects to the units array. When I'm done adding them (using the call unitToAdd.add(unitToAdd) in the Main class) I would like to call Unit's print() method from within Main.</p> <p>What I don't know is, whether or not, and where, to use the static modifier, how to refer to the variables in the print() method itself (that is, do I use this.unitID, units[i].unitID, etc) and so on.</p> <p>What is confusing me is simply the nature of the print() method. I have setters and getters that work just fine since I completely understand that calling specificUnit.setID() is changing a specific variable for that specific object, but I don't know how to get methods like print() to work.</p> <p>Thanks!</p>
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    1. USMatthew
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    1. COcan you please post the code from your Main class
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      1. USPaul Bellora
    2. COdo you really want Unit to have an array of Units? seems like you could be confused on how to group things into classes.
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      1. POCalling a method from outside a class in Java
      1. USNathan Hughes
 

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