Two Different Dimensions

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import javax.swing.JPanel;


public class AClass extends JPanel {

    OtherClass oc = new OtherClass();


    public void paintComponent(Graphics g) {
        super.paintComponent(g);

        setBackground(Color.BLACK);
        oc.paintComponent(g);
        g.setColor(Color.WHITE);
        g.setFont(new Font("TimesRoman", Font.PLAIN, 40));
        g.drawString("getHeight() (in AClass): " + getHeight() + " Pixels", 50, 50);
        oc.setGraphicsHeight(getHeight());
    }
}

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import javax.swing.JPanel;

public class OtherClass extends JPanel {
    int y;
    int height;

    public OtherClass() {
        y = height;
    }

    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.setColor(Color.BLUE);
        g.setColor(Color.WHITE);
        g.setFont(new Font("TimesRoman", Font.PLAIN, 40));
        g.drawString("y (Height of Graphic in OtherClass): " + y + " Pixels", 50, 140);

    }

    public void setGraphicsHeight(int h) {
        height = h;
    }
}

import javax.swing.JFrame;

public class Draw {
    static AClass ac = new AClass();
    public static void main(String[] argv) {


    JFrame p = new JFrame();

    p.setSize(800, 240);
    p.add(ac);
    p.setTitle("Height Dimensions");
    p.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    p.setLocationRelativeTo(null);
    p.setVisible(true);
    }
}