Thread: HELP with Java Paint Program Code

I need some help with figuring out how to let a user choose between colors and the size of the line by clicking on the button with the corresponding color name and a JSpinner to increase the size. Basically I need help with the listeners and methods on my color buttons and JSpinner. Here is the code I have so far.

import java.awt.*;
import java.awt.event.*;
 
import javax.swing.*;
 
public class myJPanelstd extends JPanel implements MouseMotionListener, ActionListener
{
	// Attributes
    JButton bx,by, bmessage,bc1,bc2,bc3,be1;
    JPanel p1;
    int width=5;
    int height=5;
 
    Point[]ps= new Point [10000];
    Color[]cs= new Color[10000];
    int[] size = new int[10000];
    int count=0;
    JSpinner spin1;
 
        // Constructor
	public myJPanelstd()
	{
		setBackground(Color.white);
		setLayout(new BorderLayout());
 
		p1 = new JPanel();
		p1.setLayout(new GridLayout(2,4));
		//Create Buttons
		bc1= new JButton("RED");
		bc2= new JButton("BLUE");
		bc3= new JButton("GREEN");
		be1= new JButton("ERASE");
		bx = new JButton("x = ");
		by = new JButton("y = ");
		spin1=new JSpinner();
 
		bmessage = new JButton("Move the mouse");
 
		// Add buttons to Panel p1
		p1.add(bc1);
		bc1.addActionListener(this);
		bc1.setBackground(Color.red);
		p1.add(bc2);
		bc2.setBackground(Color.blue);
		p1.add(bc3);
		bc3.setBackground(Color.green);
		p1.add(be1);
 
		p1.add(spin1);
 
		add(p1,"South");
 
		// Add Mouse Listener to Panel
        addMouseMotionListener(this);
 
	} // end constructor
 
	//----------------------------------------------------------------------------
	// All 2 methods must be created, even if you are not going to use one of them
	//----------------------------------------------------------------------------
    public void mouseMoved(MouseEvent evt)
    {
    	Point pt = evt.getPoint();		// get the mouse position
 
    	String sx = "x = " + pt.getX();	// get X position of the mouse
        bx.setText(sx);
 
    	String sy = "y = " + pt.getY();	// get X position of the mouse
        by.setText(sy);
 
        bmessage.setText("Mouse moved");
    }
 
    //-------------------------------------------------------------------
    public void mouseDragged(MouseEvent evt)
    {
    	Point pt=evt.getPoint();
    	int mx=(int) pt.getX();
    	int my =(int) pt.getY();
    	Graphics g=getGraphics();
    	g.setColor(Color.cyan);
    	g.fillOval(mx,my,width ,height);
    	ps[count]=pt;
    	cs[count]=Color.cyan;
    	size[count]=
    	count++;
    	bmessage.setText("Mouse dragged");
    }
    public void paintComponent(Graphics g)
    {
    	super.paintComponent(g);
    	for(int j=0;j< count; j++)
    	{
 
    		g.setColor(cs[j]);
    		g.fillOval((int)ps[j].getX(),(int)ps[j].getY(),5,5);
    	}
    }
 
} // end class

Never, never use getGraphics() of a Component. Learn to do custom painting the correct way:
Lesson: Performing Custom Painting (The Java™ Tutorials > Creating a GUI With JFC/Swing)

db