3D environment in pure java programming

Question

hi all,
my problem is dat...
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
</applet code="project1" width=1024 height=768>
</applet>
public class project1 extends Frame implements ActionListener , MouseListener {
     deathscreen screen=new deathscreen();
     int choice;
     project1(){
          super("3D-Image Processor");
          setSize(1026,768);
          setVisible(true);
          setResizable(true);
          addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent we){System.exit(0);}});
          addMouseListener(this);
//MENU BAR----------------------------------------------------------------------------------------------------------
          MenuBar mbar=new MenuBar();
          setMenuBar(mbar);
          Menu file=new Menu("File");
          MenuItem item1,item2,item3,item4;
          file.add(item1=new MenuItem("New...."));
          file.add(item2=new MenuItem("Open..."));
          file.add(item3=new MenuItem("-"));
          file.add(item4=new MenuItem("Close.."));
          mbar.add(file);
          Menu edit=new Menu("Edit");
          MenuItem item5,item6,item7;
          edit.add(item5=new MenuItem("Cut...."));
          edit.add(item6=new MenuItem("Copy..."));
          edit.add(item7=new MenuItem("Paste.."));
          mbar.add(edit);
          Menu components=new Menu("Components");
          MenuItem item9,item10;
          components.add(item9=new MenuItem("Canvas............"));
          components.add(item10=new MenuItem("General Properties"));
          mbar.add(components);
          Menu help=new Menu("Help");
          MenuItem item11=new MenuItem("Help...");
          help.add(item11);
          mbar.add(help);
          //MyMenuHandler handler=new MyMenuHandler(this);
          item1.addActionListener(this);
          item2.addActionListener(this);
          item3.addActionListener(this);
          item4.addActionListener(this);
          item5.addActionListener(this);
          item6.addActionListener(this);
          item7.addActionListener(this);
//Item8 destroyed(Component class removed)
          item9.addActionListener(this);
          item10.addActionListener(this);
          item11.addActionListener(this);
//CALL OF INDIVIDUAL COMPONENTS------------------------------------------------------------------------------          
          screen.setVisible(true);
          screen.setResizable(true);
     public static void main(String args[]){
          new project1();
     public void paint(Graphics g){
          setBackground(Color.gray);
     public void actionPerformed(ActionEvent e){
          if(e.getActionCommand()=="Close.."){
               System.exit(0);
          if(e.getActionCommand()=="Canvas............"){
               screen.setVisible(true);
          if(e.getActionCommand()=="General Properties"){
               screen.gen.setVisible(true);
//MOUSE COMPONENTS---------------------------------------------------------------------------------------------
     public void mouseClicked(MouseEvent me){
          screen.setVisible(true);
          screen.gen.setVisible(true);
     public void mouseEntered(MouseEvent me){}
     public void mouseExited(MouseEvent me){}
     public void mousePressed(MouseEvent me){}
     public void mouseReleased(MouseEvent me){}
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.io.*;
class genproperties extends Frame implements AdjustmentListener,ActionListener{
     Scrollbar red;
     Scrollbar blue;
     Scrollbar green;
     Canvas colour;
     Label r;
     Label g;
     Label b;
     Scrollbar thickness;
     Scrollbar height;
     Label th;
     Label he;
     Button SelectRect;
     Button SelectPoly;
     Button DrawRect;
     Button DrawPoly;
     Button DrawCircle;
     Button DrawLine;
     Button Pencil;
     Button Plotter;
     FileOutputStream temp;     
     int choice=0,i=0;
int props[][]=new int[1000][40],fin;
/*     props--->     0=choice of draw item
               1=red
               2=blue
               3=green
               4=thickness
               5=height
               6=x1     |
               7=y1     | of the chosen
               8=x2     | component
               9=y2     |
     genproperties(){
          super("General Properties");
          try{
          temp = new FileOutputStream("Z:\temp.txt");
          }catch(FileNotFoundException _ex){}
          setSize(270,695);
          setLocation(10,45);
          setResizable(false);
          setLayout(null);//new FlowLayout());
          setBackground(Color.gray);
//GENERAL PROPERTIES OF ALL DRAWING COMPONENTS <LOOKS>-------------------
//Color of individual components
          red=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,256);
          blue=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,256);
          green=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,256);
          Label lc=new Label("CHOSEN COLOR",Label.CENTER);
//thickness and height of individual components
          thickness=new Scrollbar(Scrollbar.HORIZONTAL,0,1,1,6);
          height=new Scrollbar(Scrollbar.HORIZONTAL,0,1,0,256);
          th=new Label("Thickness=0");
          he=new Label("Height=0");
//Individual components
          SelectRect=new Button("Select Rectangle");
          SelectPoly=new Button("Select Polygon");
          DrawRect=new Button("Rectangle");
          DrawPoly=new Button("Polygon");
          DrawCircle=new Button("Circle");
          DrawLine=new Button("Line");
          Pencil=new Button("Pencil");
          Plotter=new Button("Plotter");
          r=new Label("RED=0");
          g=new Label("BLUE=0");
          b=new Label("GREEN=0");
          colour=new Canvas();
          red.setBounds(5,50,256,15);
          blue.setBounds(5,100,256,15);
          green.setBounds(5,150,256,15);
          colour.setBounds(50,210,170,100);
          lc.setBounds(50,330,170,30);
          r.setBounds(80,70,70,20);
          b.setBounds(77,120,70,20);
          g.setBounds(75,170,75,20);
          thickness.setBounds(30,380,200,15);
          height.setBounds(5,430,256,15);
          th.setBounds(80,400,100,20);
          he.setBounds(90,450,100,20);
//Chosen color display
          colour.setBackground(Color.black);
          r.setBackground(Color.gray);
          b.setBackground(Color.gray);
          g.setBackground(Color.gray);
          SelectRect.setBounds(20,500,100,30);
          SelectPoly.setBounds(150,500,100,30);
          DrawLine.setBounds(20,530,100,30);
          DrawRect.setBounds(150,530,100,30);
          DrawPoly.setBounds(20,560,100,30);
          DrawCircle.setBounds(150,560,100,30);
          Pencil.setBounds(20,590,100,30);
          Plotter.setBounds(150,590,100,30);
          add(red);
          add(blue);
          add(green);
          add(colour);
          add(lc);
          add(r);
          add(g);
          add(b);
          add(thickness);
          add(th);
          add(height);
          add(he);
          add(SelectRect);
          add(SelectPoly);
          add(DrawLine);
          add(DrawRect);
          add(DrawPoly);
          add(DrawCircle);
          add(Pencil);
          add(Plotter);
          thickness.addAdjustmentListener(this);
          height.addAdjustmentListener(this);
          //colour.setBackground(Color.red);
          red.addAdjustmentListener(this);
          blue.addAdjustmentListener(this);
          green.addAdjustmentListener(this);
          SelectRect.addActionListener(this);
          SelectPoly.addActionListener(this);
          DrawLine.addActionListener(this);
          DrawRect.addActionListener(this);
          DrawPoly.addActionListener(this);
          DrawCircle.addActionListener(this);
          Pencil.addActionListener(this);
          Plotter.addActionListener(this);
//To escape array from getting into nullpointer exception.....
          /*int j=0;
          for(i=0;i<1000;i++){
               for(j=0;j<6;j++){
                    props[i][j]=0;
     public void paint(Graphics g){
          setBackground(Color.gray);
          g.setColor(Color.black);
          g.fillRect(40,200,190,120);
     public void adjustmentValueChanged(AdjustmentEvent ae){
          colour.setBackground(new Color(red.getValue(),green.getValue(),blue.getValue()));
          r.setText("RED="+new Integer(red.getValue()).toString());          
          b.setText("BLUE="+new Integer(blue.getValue()).toString());          
          g.setText("GREEN="+new Integer(green.getValue()).toString());     
          th.setText("Thickness="+new Integer(thickness.getValue()).toString());
          he.setText("Height="+new Integer(height.getValue()).toString());
//Array props being initialized to store attribute values of
//individual components to feed into file for later use......
          props[1]=red.getValue();
          props[i][2]=blue.getValue();
          props[i][3]=green.getValue();
          props[i][4]=thickness.getValue();
          props[i][5]=height.getValue();
          //System.out.println("Ch:"+props[i][0]+" R:"+props[i][1]+" B:"+props[i][2]+" G:"+props[i][3]+" Th:"+props[i][4]+" He:"+props[i][5]+" i:"+i);
     public void actionPerformed(ActionEvent e){
          if(e.getActionCommand()=="Pencil"){
               i=++i;
               choice=7;
          if(e.getActionCommand()=="Line"){
               choice=6;
               i=++i;
          if(e.getActionCommand()=="Circle"){
               choice=5;
               i=++i;
          if(e.getActionCommand()=="Polygon"){
               choice=4;
               i=++i;
          if(e.getActionCommand()=="Rectangle"){
               choice=3;
               i=++i;
          if(e.getActionCommand()=="Select Polygon"){
               choice=2;
               i=++i;
          if(e.getActionCommand()=="Select Rectangle"){
               choice=1;
               i=++i;
          if(e.getActionCommand()=="Plotter"){
               choice=0;
               i=++i;
          /*try{
               temp.write(props[i][0]);
               temp.write(props[i][1]);
               temp.write(props[i][2]);
               temp.write(props[i][3]);
               temp.write(props[i][4]);
               temp.write(props[i][5]);
               temp.close();
          }catch(IOException _ex){}*/
          props[i][0]=choice;
          props[i][1]=red.getValue();
          props[i][2]=blue.getValue();
          props[i][3]=green.getValue();
          fin=i;
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.io.*;
import java.lang.Math;
public class deathscreen extends Frame implements MouseListener,MouseMotionListener{
     int x1=0,x2=0,y1=0,y2=0;
     genproperties gen=new genproperties();
     int xtemp=0,ytemp=0;
     //boolean flicker=true;
     Image buffer;
     Graphics gg;
     deathscreen(){
          super("Canvas");
          setSize(500,500);
          setResizable(true);
          setLocation(280,45);
          setLayout(new FlowLayout());
          setVisible(true);
          buffer=createImage(500,500);
          gg=buffer.getGraphics();
          gen.setResizable(false);
          gen.setVisible(true);
          addMouseListener(this);
          addMouseMotionListener(this);
     public void update(Graphics g)
          paint(g);
     public void paint(Graphics g){
          int rmin=1,gmin=0,bmin=0,thmin=0,hemin=0;
          setBackground(Color.black);          
          gg.setColor(Color.black);
          gg.fillRect(0,0,500,500);
          for(int i=0;i<=gen.i;i++){
               rmin=(gen.props[i][1]/256)*(256-gen.props[i][5]);
               bmin=(gen.props[i][2]/256)*(256-gen.props[i][5]);
               gmin=(gen.props[i][3]/256)*(256-gen.props[i][5]);
               gg.setColor(new Color(gen.props[i][1],gen.props[i][3],gen.props[i][2]));
               gg.drawString("Nags Project1",20,30);
               if(gen.props[i][0]==6){
                    gg.drawLine(gen.props[i][6],gen.props[i][7],gen.props[i][8],gen.props[i][9]);
                    for(int lc=0;lc<gen.props[i][4];lc++){
                         gg.setColor(new Color(gen.props[i][1]+rmin,gen.props[i][3]+gmin,gen.props[i][2]+bmin));
                         rmin=++rmin;
                         bmin=++bmin;
                         gmin=++gmin;
                         gg.drawLine(gen.props[i][6]+lc,gen.props[i][7]+lc,gen.props[i][8]+lc,gen.props[i][9]+lc);
                         gg.drawLine(gen.props[i][6]-lc,gen.props[i][7]-lc,gen.props[i][8]-lc,gen.props[i][9]-lc);
               else if(gen.props[i][0]==3){
                    if(gen.props[i][6]>gen.props[i][8] && gen.props[i][7]<gen.props[i][9]){
                         gg.drawRect(gen.props[i][8],gen.props[i][7],gen.props[i][6]-gen.props[i][8],gen.props[i][9]-gen.props[i][7]);
                    else
                    if(gen.props[i][7]>gen.props[i][9] && gen.props[i][6]<gen.props[i][8]){
                         gg.drawRect(gen.props[i][6],gen.props[i][9],gen.props[i][8]-gen.props[i][6],gen.props[i][7]-gen.props[i][9]);
                    else
                    if(gen.props[i][6]<gen.props[i][8] && gen.props[i][7]<gen.props[i][9]){
                         gg.drawRect(gen.props[i][6],gen.props[i][7],gen.props[i][8]-gen.props[i][6],gen.props[i][9]-gen.props[i][7]);
                    else
                    if(gen.props[i][6]>gen.props[i][8] && gen.props[i][7]>gen.props[i][9]){
                         gg.drawRect(gen.props[i][8],gen.props[i][9],gen.props[i][6]-gen.props[i][8],gen.props[i][7]-gen.props[i][9]);
               else if(gen.props[i][0]==5){     
                    if(gen.props[i][6]>gen.props[i][8] && gen.props[i][7]<gen.props[i][9]){
                         gg.drawOval(gen.props[i][8],gen.props[i][7],gen.props[i][6]-gen.props[i][8],gen.props[i][9]-gen.props[i][7]);
                    else
                    if(gen.props[i][7]>gen.props[i][9] && gen.props[i][6]<gen.props[i][8]){
                         gg.drawOval(gen.props[i][6],gen.props[i][9],gen.props[i][8]-gen.props[i][6],gen.props[i][7]-gen.props[i][9]);
                    else
                    if(gen.props[i][6]<gen.props[i][8] && gen.props[i][7]<gen.props[i][9]){
                         gg.drawOval(gen.props[i][6],gen.props[i][7],gen.props[i][8]-gen.props[i][6],gen.props[i][9]-gen.props[i][7]);
                    else
                    if(gen.props[i][6]>gen.props[i][8] && gen.props[i][7]>gen.props[i][9]){
                         gg.drawOval(gen.props[i][8],gen.props[i][9],gen.props[i][6]-gen.props[i][8],gen.props[i][7]-gen.props[i][9]);
               else if(gen.props[i][0]==7){
                    //gg.drawLine(gen.props[i][6],gen.props[i][7],gen.props[i][6]+5,gen.props[i][7]+5);
          /*if(!flicker){
               screengc.drawImage(buffer,0,0,null);
          g.drawImage(buffer,0,0,this);
//MOUSE COMPONENTS--------------------------------------------------------------------------------------------------
     public void mouseClicked(MouseEvent me){
     public void mouseEntered(MouseEvent me){  }
     public void mouseExited(MouseEvent me){  }
     public void mousePressed(MouseEvent me){
          x1=me.getX();
          y1=me.getY();
          gen.props[gen.i][6]=me.getX();
          gen.props[gen.i][7]=me.getY();
          //repaint();
     public void mouseReleased(MouseEvent me){ 
          x2=me.getX();
          y2=me.getY();
          gen.props[gen.i][8]=me.getX();
          gen.props[gen.i][9]=me.getY();
          gen.i=++gen.i;
          gen.props[gen.i][0]=gen.props[gen.i-1][0];
          gen.props[gen.i][1]=gen.red.getValue();
          gen.props[gen.i][2]=gen.blue.getValue();
          gen.props[gen.i][3]=gen.green.getValue();
          repaint();
     public void mouseDragged(MouseEvent me){
          x2=me.getX();
          y2=me.getY();
          gen.props[gen.i][8]=me.getX();
          gen.props[gen.i][9]=me.getY();
          //flicker=false;
          repaint();
     public void mouseMoved(MouseEvent me){ 
          //flicker=true;
im not able to have a 3D feel in the program where i draw the objects,
when i try to use a loop and draw and redraw i am unable and i get a null pointer exception......wat do i do???

Answer 1

im not able to have a 3D feel in the program where i draw the objects,What do you mean 'a 3D feel'? Nothing in your code seems to be doing anything other than using standard awt widgets, and drawing 2D shapes, so why would it be 3D?
or do you mean it's using the Java look and feel rather than the platform one?
when i try to use a loop and draw and redraw i am unable and i get a null pointer exception......wat do i do???repost the relevent code using [code] [[i]code] tags.
Pete