Using a function from another class

[fractal5]

The topic title sounds simple, but I'm actually trying to use a function X from class A, inside a function Y in class B, and the get the value returned by X to a variable in B.

Let me start by explaining what I currently have and then go onto what I'm trying to get to.

I am using this class, the code for which I found online, to create a scrollable multiline textbox.

public class TextBoxField extends VerticalFieldManager {

	  //define some variables to be used
	  //in the class
	  private int managerWidth;
	  private int managerHeight;
	  private EditField editField;
	  
	  public TextBoxField(int width, int height) {
		    super(Manager.NO_VERTICAL_SCROLL);
		    managerWidth = width;
		    managerHeight = height;
		    
		    VerticalFieldManager vfm =
		        new VerticalFieldManager
		          (Manager.VERTICAL_SCROLL);

		      editField = new EditField(){
		        public void paint(Graphics g) {
		        getManager().invalidate();
		        super.paint(g);
		      }
		    };

		    vfm.add(editField);
		    add(vfm);
		  }
	  
	  public void paint(Graphics g) {
		  super.paint(g);
		  g.drawRect(0, 0, getWidth(), getHeight());
		}
	  
	  public void sublayout(int width, int height) {
		  if (managerWidth == 0) {
		    managerWidth = width;
		  }
		  if (managerHeight == 0) {
		    managerHeight = height;
		  }
		  super.sublayout(managerWidth, managerHeight);
		  setExtent(managerWidth,managerHeight);
		}
	  
	  public String getText() {
		    return editField.getText();
		  }
		  public void setText(String text) {
		    editField.setText(text);
		  }
		}

Then in another class I've created a function 'Set' which instantiates the textbox class, to create two textboxes and a richfieldtext, add them to a HorizontalFieldManager, and return the HorizontalFieldManager.

HorizontalFieldManager Set(int set){
		HorizontalFieldManager hr1=new HorizontalFieldManager(FIELD_HCENTER);
				
		RichTextField set1 = new RichTextField("SET " + set + ":"){
        	protected void layout(int width, int height) 
        	{
        		super.layout(75,30);//Width and height according to the button name;
        		setExtent(75,30);//width and height according to the button name;
        	}
		};
		set1.setPadding(10, 5, 10, 10);     
        TextBoxField set1W = new TextBoxField(40,25);
        set1W.setPadding(10, 5, 10, 0);
        TextBoxField set1R = new TextBoxField(40,25);
        set1R.setPadding(10, 5, 10, 0);
        
        hr1.add(set1);
        hr1.add(set1W);
        hr1.add(set1R);
		
		return hr1;
	}

Now in my main class I'm calling this function to add a 'Set' to the screen using:

add(Set(1));

The reason for creating the 'Set' function instead of using the instance of the textbox class in the main class itself, is because I will be creating several 'Sets'

Now as you can see there is a function public String getText() in the TextBoxField() which returns the value in the editField. What I need to do is get the value in this field once a button is pressed.

I have the code for the button function so that's not a concern. However I don't know how to retreive the editField value when the button is pressed. I can get the value inside the function Set(), using:

String getval = set1W.getText();

but can't reach it from outside. I don't even know if it is possible in the first. If it isn't could someone suggest a way where I could retreive these values.

Any help is appreciated.
Thanks.

[pbrockway2]

I'm actually trying to use a function X from class A, inside a function Y in class B, and the get the value returned by X to a variable in B.

That much is straight forward:

class A {
    int x() {
        return 42;
    }
}

class B1 {
    private int var;
    
    void y(A a) {
        var = a.x();
        System.out.println("Variable var in B has been set to " + var);
        System.out.println("(the value returned by x() in class A)");
    }
}

class B2 {
    private int var;
    private A a;
    
    public B2(A a) {
        this.a = a;
    }
    
    void y() {
        var = a.x();
        System.out.println("Variable var in B has been set to " + var);
        System.out.println("(the value returned by x() in class A)");
    }
}

public class Test {
    public static void main(String[] args) {
        new B1().y(new A());
        new B2(new A()).y();
    }
}

Note that for method y() of class B to call method x() of class A y() must have access to some instance of A. The code illustrates this instance being passed either directly to y() or to B's constructor. (A setter method in B would be another way.)

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After that your post loses me. Perhaps you could post a SSCCE? Something brief (ie without the layout or other stuff unrelated to the problem) and able to be compiled (ie without the missing dependencies and other code).