Field.java

 
import java.awt.Color;
import java.awt.Graphics;

public class Field 
{
	private int x,y,width, height;

	public Field(int x, int y, int width, int height){
		this.x=x;
		this.y=y;
		this.width=width;
		this.height=height;
	}
	public void draw(Graphics g){
		g.setColor(Color.GREEN);
		g.fillRect(x, y, width, height);
	}
}

FieldTester

import java.applet.Applet;
import java.awt.Graphics;

import javax.swing.JOptionPane;

public class FieldTester extends Applet {
    private String name;
	public void init()
    {
        name = JOptionPane.showInputDialog("Team Name? ");

    }

    public void paint(Graphics g)
    {
    	   g.drawString(name,20, 20);	
       Field f=new Field(50,50, 300, 200);
       f.draw(g);
    }

}