Help with processing

**MAK** · June 25th, 2014, 08:29 AM

Hey guys, i have a question about my code. I have everything necessary for the processing working, and the program runs fine, but whenever it gets to the line with processing, it brings up errors. here is the processing class:

import processing.core.*;
 
public class processing extends PApplet {
	public void setup(){
		background(12, 90, 45);
	}
	public void draw(){
		rect(mouseX,mouseY, 40, 35);
	}
}

and here is where i try to import it:

public class timerWindow1 extends JFrame implements ActionListener { 	
	// clock 
	Timer clock = new Timer(1000, this); 
	processing shapes = new processing();
 
	//button variables 
	JButton  Baron, Dragon, theirRed, ourRed, theirBlue, ourBlue, theirWraiths, ourWraiths, theirGolems, ourGolems, theirWolves, ourWolves, theirWight, ourWight; 
	JLabel bname, dname, trname, orname, tbname, obname, twname, owname, tgname, ogname, twoname, owoname, twiname, owiname; 
 
	//Seconds
	Integer baronTimer = 60, dragonTimer = 60, trTimer = 60, orTimer = 60, tbTimer = 60, obTimer = 60, twTimer = 50, owTimer = 50, tgTimer = 0, ogTimer = 0, twoTimer = 50, owoTimer = 50, twiTimer = 50, owiTimer = 50; 
 
	//Minutes
	Integer baronMTimer = 6, dragonMTimer = 5, trMTimer = 4, orMTimer = 4, tbMTimer = 4, obMTimer = 4, twMTimer = 0, owMTimer = 0, tgMTimer = 1, ogMTimer = 1, twoMTimer = 0, owoMTimer = 0, twiMTimer = 0, owiMTimer = 0; 
	boolean dragonRunning, baronRunning, tredRunning, oredRunning, tblueRunning, oblueRunning, twraithsRunning, owraithsRunning, tgolemsRunning, ogolemsRunning, twolvesRunning, owolvesRunning, twightRunning, owightRunning; 
 
	//key actions
	KeyEvent button1; 
	KeyListener all; 
 
	//the window constructor 
	timerWindow1 (String title){ 
		super (title); 
		this.init(); 
		this.setSize(900, 600); 
		this.setVisible(true); 
		shapes.setup();
		shapes.draw();
	}

that isnt the whole program, but it is what is causing the problem i believe. any help would be great thanks.

**Norm** · June 25th, 2014, 08:36 AM

it brings up errors

Please copy the full text and paste it here.

Please edit your post and wrap your code with code tags:
[code=java]
YOUR CODE GOES HERE
[/code]
to get highlighting and preserve formatting.

**MAK** · June 25th, 2014, 09:30 AM

here is the whole thing

main:

import java.awt.Window;
import javax.swing.JFrame;
 
 
public class Main {
 
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Window titleScreen = new titleScreen ("Welcome!");
		((JFrame) titleScreen).setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
 
}

timer class

import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.JPanel; 
import javax.swing.JButton; 
import javax.swing.Timer; 
import java.awt.Color; 
import java.awt.Component; 
import java.awt.GridLayout; 
import java.awt.Toolkit; 
import java.awt.event.ActionListener; 
import java.awt.event.ActionEvent; 
import java.awt.event.KeyEvent; 
import java.awt.event.KeyListener; 
import processing.core.*;
/*Matt Kuhn 
 * 6-28-13 
 *  
 *  
 * this is a Jungle Timer for League of Legends 
 */
 
 
 
public class timerWindow1 extends JFrame implements ActionListener { 	
	// clock 
	Timer clock = new Timer(1000, this); 
	processing shapes = new processing();
 
	//button variables 
	JButton  Baron, Dragon, theirRed, ourRed, theirBlue, ourBlue, theirWraiths, ourWraiths, theirGolems, ourGolems, theirWolves, ourWolves, theirWight, ourWight; 
	JLabel bname, dname, trname, orname, tbname, obname, twname, owname, tgname, ogname, twoname, owoname, twiname, owiname; 
 
	//Seconds
	Integer baronTimer = 60, dragonTimer = 60, trTimer = 60, orTimer = 60, tbTimer = 60, obTimer = 60, twTimer = 50, owTimer = 50, tgTimer = 0, ogTimer = 0, twoTimer = 50, owoTimer = 50, twiTimer = 50, owiTimer = 50; 
 
	//Minutes
	Integer baronMTimer = 6, dragonMTimer = 5, trMTimer = 4, orMTimer = 4, tbMTimer = 4, obMTimer = 4, twMTimer = 0, owMTimer = 0, tgMTimer = 1, ogMTimer = 1, twoMTimer = 0, owoMTimer = 0, twiMTimer = 0, owiMTimer = 0; 
	boolean dragonRunning, baronRunning, tredRunning, oredRunning, tblueRunning, oblueRunning, twraithsRunning, owraithsRunning, tgolemsRunning, ogolemsRunning, twolvesRunning, owolvesRunning, twightRunning, owightRunning; 
 
	//key actions
	KeyEvent button1; 
	KeyListener all; 
 
	//the window constructor 
	timerWindow1 (String title){ 
		super (title); 
		this.init(); 
		this.setSize(900, 600); 
		this.setVisible(true); 
		shapes.setup();
		shapes.draw();
	} 
 
	void init(){ 
		//the timers 
		bname = new JLabel("7:00");//Baron 
		dname = new JLabel("6:00");//Dragon 
		trname = new JLabel("5:00");//their red 
		orname = new JLabel("5:00");//our red 
		tbname = new JLabel("5:00");//their blue 
		obname = new JLabel("5:00");//our blue 
		twname = new JLabel("0:50");//their wraiths 
		owname = new JLabel("0:50");//our wraiths 
		tgname = new JLabel("1:00");//their golems 
		ogname = new JLabel("1:00");//our golems 
		twoname = new JLabel("0:50");//their wolves 
		owoname = new JLabel("0:50");//our wolves 
		twiname = new JLabel("0:50");//their wight
		owiname = new JLabel("0:50");//our wight
 
		//button setup 
 
		Baron = new JButton("Baron"); 
		Dragon = new JButton("Dragon"); 
		theirRed = new JButton("Their red"); 
		ourRed= new JButton("Our red"); 
		theirBlue = new JButton("Their blue"); 
		ourBlue = new JButton("Our blue"); 
		theirWraiths = new JButton("Their wraiths"); 
		ourWraiths = new JButton("Our wraiths"); 
		theirGolems = new JButton("Their golems"); 
		ourGolems = new JButton("Our golems"); 
		theirWolves = new JButton("Their wolves"); 
		ourWolves = new JButton("Our wolves"); 
		theirWight = new JButton("Their wight");
		ourWight = new JButton("Our wight");
 
		//button colors 
		Color coolOrange = new Color(242, 161, 33); 
		Color coolAqua = new Color(8, 196, 138);
		Baron.setBackground(Color.MAGENTA); 
		Dragon.setBackground(coolOrange); 
		theirRed.setBackground(Color.RED); 
		ourRed.setBackground(Color.RED); 
		theirBlue.setBackground(Color.BLUE); 
		ourBlue.setBackground(Color.BLUE); 
		theirWraiths.setBackground(Color.GRAY); 
		ourWraiths.setBackground(Color.GRAY); 
		theirGolems.setBackground(Color.GREEN); 
		ourGolems.setBackground(Color.GREEN);        
		theirWolves.setBackground(Color.LIGHT_GRAY); 
		ourWolves.setBackground(Color.LIGHT_GRAY); 
		theirWight.setBackground(coolAqua);
		ourWight.setBackground(coolAqua);
 
		//button listeners 
		Baron.addActionListener(this); 
		Dragon.addActionListener(this); 
		theirRed.addActionListener(this); 
		ourRed.addActionListener(this); 
		theirBlue.addActionListener(this); 
		ourBlue.addActionListener(this); 
		theirWraiths.addActionListener(this); 
		ourWraiths.addActionListener(this); 
		theirGolems.addActionListener(this); 
		ourGolems.addActionListener(this); 
		theirWolves.addActionListener(this); 
		ourWolves.addActionListener(this); 
		theirWight.addActionListener(this);
		ourWight.addActionListener(this);
 
		//key listeners 
		//((Component) all).addKeyListener((KeyListener) this); 
		//      Dragon.addKeyListener(this); 
		//      theirRed.addKeyListener(this); 
		//      ourRed.addKeyListener(this); 
		//      theirBlue.addKeyListener(this); 
		//      ourBlue.addKeyListener(this); 
		//      theirWraiths.addKeyListener(this); 
		//      ourWraiths.addKeyListener(this); 
		//      theirGolems.addKeyListener(this); 
		//      ourGolems.addKeyListener(this); 
		//      theirWolves.addKeyListener(this); 
		//      ourWolves.addKeyListener(this); 
 
		//timer and button panels 
		JPanel panel = new JPanel(new GridLayout(7,2)); 
		panel.add(Baron); 
		panel.add(bname);        
		panel.add(Dragon); 
		panel.add(dname); 
		panel.add(theirRed); 
		panel.add(trname); 
		panel.add(ourRed); 
		panel.add(orname); 
		panel.add(theirBlue); 
		panel.add(tbname); 
		panel.add(ourBlue); 
		panel.add(obname); 
		panel.add(theirWraiths); 
		panel.add(twname); 
		panel.add(ourWraiths); 
		panel.add(owname); 
		panel.add(theirGolems); 
		panel.add(tgname); 
		panel.add(ourGolems); 
		panel.add(ogname); 
		panel.add(theirWolves);  
		panel.add(twoname); 
		panel.add(ourWolves); 
		panel.add(owoname); 
		panel.add(theirWight);
		panel.add(twiname);
		panel.add(ourWight);
		panel.add(owiname);
 
 
 
		Toolkit.getDefaultToolkit().beep(); 
 
		//checks for timers 
		clock.start(); 
 
		//adds it all 
		this.add(panel); 
	} 
	@Override
	public void actionPerformed(ActionEvent e) { 
		// TODO Auto-generated method stub 
 
		//if button is pushed start clock 
		if (e.getSource() == Baron ) 
		{ 
			baronRunning = true; 
		} 
		if (e.getSource() == Dragon ){ 
			dragonRunning = true; 
		} 
		if (e.getSource() == theirRed){ 
			tredRunning = true; 
		} 
		if (e.getSource() == ourRed){ 
			oredRunning = true; 
		} 
		if (e.getSource() == theirBlue){ 
			tblueRunning = true; 
		} 
		if (e.getSource() == ourBlue){ 
			oblueRunning = true; 
		} 
		if (e.getSource() == theirWraiths){ 
			twraithsRunning = true; 
		} 
		if (e.getSource() == ourWraiths){ 
			owraithsRunning = true; 
		} 
		if (e.getSource() == theirGolems ){ 
			tgolemsRunning = true; 
		} 
		if (e.getSource() == ourGolems){ 
			ogolemsRunning = true; 
		} 
		if (e.getSource() == theirWolves){ 
			twolvesRunning = true; 
		} 
		if (e.getSource() == ourWolves){ 
			owolvesRunning = true; 
		} 
		if (e.getSource() == theirWight){ 
			twightRunning = true; 
		} 
		if (e.getSource() == ourWight){ 
			owightRunning = true; 
		} 
 
 
		//clock running mechanics 
		if(baronRunning && e.getSource()==clock){ 
			if(baronMTimer == 0 && baronTimer == 0) 
			{ 
				baronRunning = false; 
				baronTimer = 00; 
				baronMTimer = 7; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
			if(baronTimer == 0) 
			{ 
				baronMTimer--; 
				baronTimer = 60; 
			} 
 
			baronTimer--; 
 
			if(baronTimer < 10) 
			{ 
				bname.setText(baronMTimer.toString() + ":0" + baronTimer.toString()); 
			} 
			else
			{ 
				bname.setText(baronMTimer.toString() + ":" + baronTimer.toString()); 
			} 
 
		} 
 
		if(dragonRunning && e.getSource()==clock){ 
			if(dragonMTimer == 0 && dragonTimer == 0) 
			{ 
				dragonRunning = false; 
				dragonTimer = 01; 
				dragonMTimer = 6; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
			if(dragonTimer == 0) 
			{ 
				dragonMTimer--; 
				dragonTimer = 60; 
			} 
 
			dragonTimer--; 
 
			if(dragonTimer < 10) 
			{ 
				dname.setText(dragonMTimer.toString() + ":0" + dragonTimer.toString()); 
			} 
			else
			{ 
				dname.setText(dragonMTimer.toString() + ":" + dragonTimer.toString()); 
			} 
		} 
		if(tredRunning && e.getSource()==clock){ 
			if(trMTimer == 0 && trTimer == 0) 
			{ 
				tredRunning = false; 
				trTimer = 01; 
				trMTimer = 5; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
			if(trTimer==0) 
			{ 
				trMTimer--; 
				trTimer = 60; 
			} 
			trTimer--; 
 
			if(trTimer < 10) 
			{ 
				trname.setText(trMTimer.toString() + ":0" + trTimer.toString()); 
			} 
			else
			{ 
				trname.setText(trMTimer.toString() + ":" + trTimer.toString()); 
			} 
		} 
 
		if(oredRunning && e.getSource()==clock){ 
			if(orTimer == 0 && orMTimer == 0) 
			{ 
				oredRunning = false; 
				orTimer = 01; 
				orMTimer = 5; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
			if(orTimer == 0) 
			{ 
				orMTimer--; 
				orTimer = 60; 
			} 
			orTimer--; 
 
			if(orTimer < 10) 
			{ 
				orname.setText(orMTimer.toString() + ":0" + orTimer.toString()); 
			} 
			else
			{ 
				orname.setText(orMTimer.toString() + ":" + orTimer.toString()); 
			} 
		} 
 
		if(tblueRunning && e.getSource()==clock){ 
			if(tbTimer== 0 && tbMTimer ==0) 
			{ 
				tblueRunning = false; 
				tbTimer = 01; 
				tbMTimer = 5; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
			if(tbTimer== 0) 
			{ 
				tbMTimer--; 
				tbTimer = 60; 
			} 
			tbTimer--; 
 
			if (tbTimer < 10) 
			{ 
				tbname.setText(tbMTimer.toString() + ":0" + tbTimer.toString()); 
			} 
 
			else
			{    
				tbname.setText(tbMTimer.toString() + ":" + tbTimer.toString()); 
			} 
		} 
 
		if(oblueRunning && e.getSource()==clock){ 
			if (obTimer == 0 && obMTimer == 0) 
			{ 
				oblueRunning = false; 
				obTimer = 01; 
				obMTimer = 5; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
			if(obTimer == 0) 
			{ 
				obMTimer--; 
				obTimer = 60; 
			} 
			obTimer--; 
			if (obTimer < 10) 
			{ 
				obname.setText(obMTimer.toString() + ":0" + obTimer.toString()); 
			} 
			else
			{ 
				obname.setText(obMTimer.toString() + ":" + obTimer.toString()); 
			} 
		} 
 
		if(twraithsRunning && e.getSource()==clock){ 
			if(twTimer == 0 && twMTimer == 0) 
			{ 
				twraithsRunning = false; 
				twTimer = 51; 
				twMTimer = 0; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
 
			twTimer--; 
			if(twTimer < 10) 
			{ 
				twname.setText(twMTimer.toString() + ":0" + twTimer.toString()); 
			} 
			else
			{ 
				twname.setText(twMTimer.toString() + ":" + twTimer.toString()); 
			} 
		} 
 
		if(owraithsRunning && e.getSource()==clock){ 
			if(owMTimer == 0 && owTimer == 0) 
			{ 
				owraithsRunning = false; 
				owTimer = 51;  
				owMTimer = 0; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
			owTimer--; 
			if (owTimer < 10) 
			{ 
				owname.setText(owMTimer.toString() + ":0" + owTimer.toString()); 
			} 
			else
			{ 
				owname.setText(owMTimer.toString() + ":" + owTimer.toString()); 
			} 
 
 
		} 
		if(tgolemsRunning && e.getSource()==clock){ 
			if(tgMTimer== 0 && tgTimer == 0) 
			{ 
				tgolemsRunning = false; 
				tgTimer = 1; 
				tgMTimer = 1; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
			if(tgTimer==0) 
			{ 
				tgMTimer--; 
				tgTimer = 60; 
			} 
 
			tgTimer--; 
			if(tgTimer < 10) 
			{ 
				tgname.setText(tgMTimer.toString() + ":0" + tgTimer.toString()); 
 
			} 
			else
			{ 
				tgname.setText(tgMTimer.toString() + ":" + tgTimer.toString()); 
			} 
		} 
		if(ogolemsRunning && e.getSource()==clock){ 
			if(ogMTimer==0 && ogTimer == 0) 
			{ 
				ogolemsRunning = false; 
				ogTimer = 1; 
				ogMTimer = 1
						; 
				Toolkit.getDefaultToolkit().beep(); 
 
			}    
			if(ogTimer == 0) 
			{ 
				ogMTimer--; 
				ogTimer = 60; 
			} 
			ogTimer--; 
			if (ogTimer < 10) 
			{ 
				ogname.setText(ogMTimer.toString() + ":0" + ogTimer.toString()); 
			} 
			else
			{ 
				ogname.setText(ogMTimer.toString() + ":" + ogTimer.toString()); 
			} 
		} 
		if(twolvesRunning && e.getSource()==clock){ 
			if(twoMTimer == 0 && twoTimer == 0) 
			{ 
				twolvesRunning = false; 
				twoTimer = 51; 
				twoMTimer = 0; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
			if (twoTimer == 0) 
			{ 
				twoMTimer--; 
				twoTimer = 60; 
			} 
 
			twoTimer--; 
			if(twoTimer < 10) 
			{ 
				twoname.setText(twoMTimer.toString() + ":0" + twoTimer.toString()); 
			} 
			else
			{ 
				twoname.setText(twoMTimer.toString() + ":" + twoTimer.toString()); 
			} 
		} 
 
		if(owolvesRunning && e.getSource()==clock){ 
			if(owoTimer == 0 && owoMTimer == 0) 
			{ 
				owolvesRunning = false; 
				owoTimer = 51; 
				owoMTimer = 0; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
			if(owoTimer == 0) 
			{ 
				owoMTimer--; 
				owoTimer = 60; 
			} 
 
			owoTimer--; 
			if(owoTimer < 10) 
			{ 
				owoname.setText(owoMTimer.toString() + ":0" + owoTimer.toString()); 
			} 
			else
			{ 
				owoname.setText(owoMTimer.toString() + ":" + owoTimer.toString()); 
			} 
 
 
 
 
		}
		if(twightRunning && e.getSource()==clock){ 
			if(twiTimer == 0 && twMTimer == 0) 
			{ 
				twightRunning = false; 
				twiTimer = 51; 
				twiMTimer = 0; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
 
 
			twiTimer--; 
			if(twiTimer < 10) 
			{ 
				twiname.setText(twiMTimer.toString() + ":0" + twiTimer.toString()); 
			} 
			else
			{ 
				twiname.setText(twiMTimer.toString() + ":" + twiTimer.toString()); 
			} 
		}
		if(owightRunning && e.getSource()==clock){ 
			if(owiMTimer == 0 && owiTimer == 0) 
			{ 
				owightRunning = false; 
				owiTimer = 51; 
				owiMTimer = 0; 
				Toolkit.getDefaultToolkit().beep(); 
			} 
			if (owiTimer == 0) 
			{ 
				owiMTimer--; 
				owiTimer = 60; 
			} 
 
			owiTimer--; 
			if(owiTimer < 10) 
			{ 
				owiname.setText(owiMTimer.toString() + ":0" + owiTimer.toString()); 
			} 
			else
			{ 
				owiname.setText(owiMTimer.toString() + ":" + owiTimer.toString()); 
			} 
		} 
 
	} 
//	@Override
//	public void keyTyped(KeyEvent e) { 
//		// TODO Auto-generated method stub 
//		button1 = e; 
//		if (e.getSource() == button1){ 
//			baronRunning = true; 
//
//		} 
//	} 
//	@Override
//	public void keyPressed(KeyEvent e) { 
//		// TODO Auto-generated method stub 
//		button1 = e; 
//		if (e.getSource() == button1){ 
//			baronRunning = true; 
//
//		} 
//	} 
//	@Override
//	public void keyReleased(KeyEvent e) { 
//		// TODO Auto-generated method stub 
//		button1 = e; 
//		if (e.getSource() == button1){ 
//			baronRunning = true; 
//
//		} 
	}

tips class

import javax.swing.JFrame; 
import javax.swing.JPanel; 
import java.awt.Color; 
import javax.swing.JLabel;
import processing.core.*;
 
public class tips extends JFrame {
 
	processing shapes = new processing();
 
	//	shapes.setup();
	//	shapes.draw();
	//	
	JLabel tipSheet;
	JPanel panel;
 
	tips (String title){
		super (title); 
		this.init(); 
		this.setSize(600, 300); 
		this.setVisible(true); 
	}
	public void init(){
		JPanel panel = new JPanel();
		panel.add(new JLabel ("Tips"));
		panel.add(new JLabel ("1:56- Check lanes to see who leashed where. 2:15- ward lane if jungler started on your side. "));
		panel.add(new JLabel ("3:00 ward lane if jungler started other side. 7:20 & 8:00 ward if"));
		panel.add(new JLabel(" jungler started your side and opposite side."));
		panel.add(new JLabel("Flash & tp = 5 mins, heal = 4, all else = 3.5"));
		panel.setBackground(Color.CYAN);
		this.add(panel);
 
	}
}

title screen

import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.JButton; 
import javax.swing.Timer; 
import java.awt.Color; 
import java.awt.Component; 
import java.awt.GridLayout; 
import java.awt.Toolkit; 
import java.awt.Window;
import java.awt.event.ActionListener; 
import java.awt.event.ActionEvent; 
import java.awt.event.KeyEvent; 
import java.awt.event.KeyListener;
import javax.swing.JLabel;
 
public class titleScreen extends JFrame implements ActionListener {
	JButton timers, tips; 
	titleScreen (String title){
		super (title); 
		this.init(); 
		this.setSize(900, 300); 
		this.setVisible(true); 
	}
	void init(){
		// buttons
		timers = new JButton ("Timers");
		tips = new JButton ("Tips");
 
		//colors
		timers.setBackground(Color.CYAN);
		tips.setBackground(Color.PINK);
 
		//button listeners
		timers.addActionListener(this);
		tips.addActionListener(this);
 
		//panels
		JPanel panel = new JPanel(new GridLayout(2,1));
		panel.add(timers);
		panel.add(tips);
 
		this.add(panel);
 
	}
	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		if ((JButton) e.getSource() == timers){
			Window timerWindow1 = new timerWindow1 ("Timers");
		}
		if (e.getSource() == tips){
			Window tips = new tips ("Tips");
		}
 
	}
 
 
}

proocessing

import processing.core.*;
 
public class processing extends PApplet {
	public void setup(){
		background(12, 90, 45);
	}
	public void draw(){
		rect(mouseX,mouseY, 40, 35);
	}
}

[/I]

**Norm** · June 25th, 2014, 09:33 AM

it brings up errors.

You forgot to post the full text of the error messages.

Are the contents of the processing.code package important? The code can not be compiled and executed for testing without those classes.

**MAK** · June 25th, 2014, 09:47 AM

here is the error:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at processing.core.PApplet.background(PApplet.java:15 157)
at processing.setup(processing.java:5)
at timerWindow1.<init>(timerWindow1.java:50)
at titleScreen.actionPerformed(titleScreen.java:49)
at javax.swing.AbstractButton.fireActionPerformed(Unk nown Source)
at javax.swing.AbstractButton$Handler.actionPerformed (Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed (Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseRe leased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent( Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(U nknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unkno wn Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPri vilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilter s(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(U nknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarch y(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

processing.core is what allows the processing, as it contains all the necessary libraries.

**KevinWorkman** · June 25th, 2014, 09:51 AM

You've got a lot going on here. Why do you have so many classes that extend JFrame? Which specific one is causing the NPE?

You'd be much better off creating an MCVE that we can look at instead of posting your entire project. You should also use standard naming conventions: classes start with an upper-case letter, methods and variables start with a lower-case letter.

**Norm** · June 25th, 2014, 10:05 AM

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at processing.core.PApplet.background(PApplet.java:15 157)

There is a null value used on line 15157. (That's a HUGE class file.) Look at that line and see what varible had a null value. And then backtrack to see why.

Don't post that code.

**KevinWorkman** · June 25th, 2014, 10:07 AM

PApplet is an internal Processing class (and yeah, it is huge), not in the OP's code. I predict he's doing something wrong in the setup, since Processing requires you to call a couple methods before using it.

But I can't really be more specific until we see an MCVE.

Edit: Just guessing, but this error might be caused by calling background() from setup() before anything has been initialized. But again, that might also just be because you aren't setting things up correctly. I can't really tell without the MCVE.

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