java
Jun 25, 2013 at 4:16pm UTC
anyone with java knowledge?,
cant understand where the nullpointerexception is.
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import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class HandleMedia{
public static void main(String[] args) throws Exception{
int imagecounter = 0;
rita r = new rita("C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" );
JFrame frame = new JFrame();
frame.setTitle("Stream" );
frame.setVisible(true );
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
frame.setSize(100,100);
frame.add(r);
Robot robot = new Robot();
for (int x = 0;x < x+1; x++){
String path = "C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" ;
BufferedImage screenShot = robot.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
ImageIO.write(screenShot, "JPG" , new File(path));
imagecounter ++;
}
}
}
class rita extends JPanel{
Image bild = null;
String path;
public rita(String pic){
path = pic;
setImage();
}
public void paint(Graphics g){
super.paint(g);
this .setBackground(Color.BLUE);
g.drawImage(bild, 0, 0, this );
repaint();
}
public void setImage(){
try {
URL imageURL = HandleMedia.class .getResource(path);
bild = Toolkit.getDefaultToolkit().getImage(imageURL);
}
catch (Exception e){
System.out.println("Error - " +e.getMessage());
}
}
}
Jun 25, 2013 at 5:07pm UTC
1 2
for (int x = 0;x < x+1; x++){//this is an infinite loop
String path = "C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" ;//are you sure this path exists?
Last edited on Jun 25, 2013 at 5:08pm UTC
Jun 25, 2013 at 7:39pm UTC
Now its only a error machine soon if anyone got any ides
added timer, lable to for images
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import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;
public abstract class HandleMedia{
public static void main(String[] args) throws Exception{
int imagecounter = 0;
rita r = new rita("C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" );
JFrame frame = new JFrame();
frame.setTitle("Stream" );
frame.setVisible(true );
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
frame.setSize(100,100);
frame.add(r);
int count = 0;
Robot robot = new Robot();
for (int x = 0;x < x+1; x++){
String path = "C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" ;
BufferedImage screenShot = robot.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
ImageIO.write(screenShot, "JPG" , new File(path));
imagecounter ++;
System.out.println(imagecounter);
JLabel lable = new JLabel();
ImageIcon image = new ImageIcon(path);
lable.setIcon(image);
frame.add(lable);
}
}
}
class rita extends JPanel implements ActionListener{
Image bild = null;
String path;
private Timer time = new Timer(1000, this );;
public int count = 0;
public rita(String pic){
path = pic;
setImage();
timeStart();
}
public void paint(Graphics g){
super.paint(g);
g.drawImage(bild, 0, 0, this );
}
public void setImage(){
try {
URL imageURL = HandleMedia.class .getResource(path);
bild = Toolkit.getDefaultToolkit().getImage(imageURL);
}
catch (Exception e){
System.out.println("Error - " +e.getMessage());
}
}
public void timeStart(){
time.start();
}
public void timeStop(){
time.stop();
}
@Override
public void actionPerformed(ActionEvent e) {
count++;
System.out.println(count);
setImage();
repaint();
}
}
Last edited on Jun 25, 2013 at 7:40pm UTC
Jun 25, 2013 at 8:08pm UTC
The NPE is where it shows it is - you should get a stackrace.
Jun 25, 2013 at 9:01pm UTC
Kk works,
Like this first time you play it it records with printscreens the next time you play, it is a "video" that replays what you did, ty for help all.
The recording will only get longer and longer if you dont delete the screenshots between the restarts of the program
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import java.awt.Graphics;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;
public abstract class HandleMedia{
public static void main(String[] args) throws Exception{
int imagecounter = 0;
JFrame frame = new JFrame();
rita r = new rita("C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" , imagecounter);
frame.setTitle("Stream" );
frame.setVisible(true );
frame.setDefaultCloseOperation(frame.EXIT_ON_CLOSE);
frame.setSize(1366,768);
frame.add(r);
String path = "C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" ;
JLabel lable = new JLabel();
frame.add(lable);
Robot robot = new Robot();
for (int x = 0;x < x+1; x++){
imagecounter++;
BufferedImage screenShot = robot.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
ImageIO.write(screenShot, "JPG" , new File(path));
imagecounter ++;
System.out.println(imagecounter);
if (imagecounter <= 10)
r.timeStop();
path = "C:\\Users\\root\\Desktop\\create\\" +imagecounter+".jpeg" ;
r.update(path, imagecounter);
ImageIcon image = new ImageIcon(path);
lable.setIcon(image);
frame.repaint();
}
}
}
class rita extends JPanel implements ActionListener{
Image bild = null;
String path;
private Timer time = new Timer(1, this );;
public int count = 0;
public int imagecounter = 0;
public rita(String pic, int point){
timeStart();
}
public void update(String pic, int x){
path = pic;
count = x;
setImage();
}
public void paint(Graphics g){
super.paint(g);
g.drawImage(bild, 0, 0, this );
}
public void setImage(){
try {
URL imageURL = HandleMedia.class .getResource(path);
bild = Toolkit.getDefaultToolkit().getImage(imageURL);
}
catch (Exception e){
System.out.println("Error - " +e.getMessage());
}
}
public void timeStart(){
time.start();
}
public void timeStop(){
time.stop();
}
@Override
public void actionPerformed(ActionEvent e) {
count++;
setImage();
repaint();
update(path, count);
imagecounter = count;
}
}
Last edited on Jun 25, 2013 at 9:04pm UTC
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