Image In Java (JPG, GIF, PNG)

Image In Java (JPG, GIF, PNG)
(Copy And Paste Source Code Below Into Wordprocessing Software Like Notepad. Save it as java file. For file name, just use file name like given. Compile and execute it)

sample_picture.jpg

Note : Before you can compile and execute java source code below, save sample_picture.jpg above at same location with your source code and make sure it's name is sample_picture.jpg

READ A PICTURE FILE WITH FORMAT JPG, GIF OR PNG IN JAVA

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COMPLETE SOURCE CODE FOR ReadImageFileInJava.java

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import java.awt.Image;
import java.awt.Toolkit;

public class ReadImageFileInJava
{
public static void main(String[]args)
{
//READ AN IMAGE FILE, sample_picture.jpg
//METHOD getImage() CAN READ IMAGE FILE WITH FORMAT gif, jpg and png
Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");
}
}

GET WIDTH AND HEIGHT FOR AN IMAGE IN JAVA

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COMPLETE SOURCE CODE FOR ReadImageFileInJava.java

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import java.awt.Image;
import javax.swing.ImageIcon;

import java.awt.Toolkit;

public class ReadImageFileInJava
{
public static void main(String[]args)
{
//READ AN IMAGE FILE, sample_picture.jpg
//METHOD getImage() CAN READ IMAGE FILE WITH FORMAT gif, jpg and png
Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");

ImageIcon b=new ImageIcon(a);

//GET PICTURE'S WIDTH
int c=b.getIconWidth();
System.out.println("WIDTH : "+c+" pixels");

//GET PICTURE'S HEIGHT
int d=b.getIconHeight();
System.out.println("HEIGHT : "+d+" pixels");
}
}

PUT IMAGE INTO A CONTAINER IN JAVA

Note : When you want to draw image into a container, you must overwrite method paint for the container. After that you can use method drawImage from Graphics class to draw image for you. You can see it at the end of source code below.

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COMPLETE SOURCE CODE FOR ReadImageFileInJava.java

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import java.awt.Graphics;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Toolkit;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;

public class ReadImageFileInJava
{
public static void main(String[]args)
{
//READ AN IMAGE FILE, sample_picture.jpg
//METHOD getImage() CAN READ IMAGE FILE WITH FORMAT gif, jpg and png
Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");

ImageIcon b=new ImageIcon(a);

//GET PICTURE'S WIDTH
int c=b.getIconWidth();
System.out.println("WIDTH : "+c+" pixels");

//GET PICTURE'S HEIGHT
int d=b.getIconHeight();
System.out.println("HEIGHT : "+d+" pixels");

FrameWithPicture e=new FrameWithPicture();
e.setSize(c,d);
e.setVisible(true);
e.setResizable(false);
}
}

//CLASS FrameWithPicture
class FrameWithPicture extends Frame
{
//FOR FRAME CLOSE BUTTON
WindowListener wl=new WindowAdapter()
{
public void windowClosing(WindowEvent evt)
{
   System.exit(0);
}
};

public FrameWithPicture()
{
//FOR FRAME'S TITLE
super("DISPLAY IMAGE");

//ADD WINDOW LISTENER FOR FRAME
addWindowListener(wl);
}

//PAINT IMAGE(sample_picture.jpg) INTO FRAME
//OVERWRITE METHOD PAINT
public void paint(Graphics g)
{
super.paint(g);
Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");
g.drawImage(a, 0, 0,null);
}
}

SCALE IMAGE IN JAVA

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COMPLETE SOURCE CODE FOR ScaleImageInJava.java

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import java.awt.geom.AffineTransform;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Toolkit;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;

public class ScaleImageInJava
{
public static void main(String[]args)
{
FrameWithPicture e=new FrameWithPicture();
e.setSize(400,400);
e.setVisible(true);
//e.setResizable(false);
}
}

//CLASS FrameWithPicture
class FrameWithPicture extends Frame
{
//FOR FRAME CLOSE BUTTON
WindowListener wl=new WindowAdapter()
{
   public void windowClosing(WindowEvent evt)
   {
       System.exit(0);
   }
};

public FrameWithPicture()
{
   //FOR FRAME'S TITLE
   super("DISPLAY IMAGE");

   //ADD WINDOW LISTENER FOR FRAME
   addWindowListener(wl);
}

//PAINT IMAGE(sample_picture.jpg) INTO FRAME
public void paint(Graphics g)
{
   Graphics2D g2d=(Graphics2D)g;
   AffineTransform at=new AffineTransform();

   //THIS WILL SCALE THE IMAGE
   //YOU CAN TRY CHANGE THIS VALUE
   //CURRENT VALUE IS 1 AND 1
   at.scale(1,1);

   Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");
   g2d.drawImage(a,at,this);
}
}

SHEAR IMAGE IN JAVA

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COMPLETE SOURCE CODE FOR ShearImageInJava.java

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import java.awt.geom.AffineTransform;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Toolkit;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;

public class ShearImageInJava
{
public static void main(String[]args)
{
FrameWithPicture e=new FrameWithPicture();
e.setSize(400,400);
e.setVisible(true);
}
}

//CLASS FrameWithPicture
class FrameWithPicture extends Frame
{
//FOR FRAME CLOSE BUTTON
WindowListener wl=new WindowAdapter()
{
    public void windowClosing(WindowEvent evt)
    {
        System.exit(0);
    }
};

public FrameWithPicture()
{
    //FOR FRAME'S TITLE
    super("DISPLAY IMAGE");

    //ADD WINDOW LISTENER FOR FRAME
    addWindowListener(wl);
}

//PAINT IMAGE(sample_picture.jpg) INTO FRAME
public void paint(Graphics g)
{
    Graphics2D g2d=(Graphics2D)g;
    AffineTransform at=new AffineTransform();

    //THIS WILL SHEAR THE IMAGE
    //YOU CAN TRY CHANGE THIS VALUE
    //CURRENT VALUE IS 0.2 AND 1
    at.shear(0.2,1);

    Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");
    g2d.drawImage(a,at,this);
}
}

TRANSLATE IMAGE IN JAVA (CHANGE IMAGE LOCATION)

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COMPLETE SOURCE CODE FOR TranslateImageInJava.java

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import java.awt.geom.AffineTransform;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Toolkit;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;

public class TranslateImageInJava
{
public static void main(String[]args)
{
 FrameWithPicture e=new FrameWithPicture();
 e.setSize(400,400);
 e.setVisible(true);
}
}

//CLASS FrameWithPicture
class FrameWithPicture extends Frame
{
 //FOR FRAME CLOSE BUTTON
 WindowListener wl=new WindowAdapter()
 {
     public void windowClosing(WindowEvent evt)
     {
         System.exit(0);
     }
 };

 public FrameWithPicture()
 {
     //FOR FRAME'S TITLE
     super("DISPLAY IMAGE");

     //ADD WINDOW LISTENER FOR FRAME
     addWindowListener(wl);
 }

 //PAINT IMAGE(sample_picture.jpg) INTO FRAME
 public void paint(Graphics g)
 {
     Graphics2D g2d=(Graphics2D)g;
     AffineTransform at=new AffineTransform();

     //THIS WILL TRANSLATE THE IMAGE
     //YOU CAN TRY CHANGE THIS VALUE
     //CURRENT VALUE IS 20 AND 60
     at.translate(20,60);

     Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");
     g2d.drawImage(a,at,this);
 }
}

ROTATE IMAGE IN JAVA (ANGLE OF ROTATION IS IN RADIANS VALUE)

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COMPLETE SOURCE CODE FOR RotateImageInJava.java

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import java.awt.geom.AffineTransform;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Toolkit;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;

public class RotateImageInJava
{
public static void main(String[]args)
{
   FrameWithPicture e=new FrameWithPicture();
   e.setSize(400,400);
   e.setVisible(true);
}
}

//CLASS FrameWithPicture
class FrameWithPicture extends Frame
{
   //FOR FRAME CLOSE BUTTON
   WindowListener wl=new WindowAdapter()
   {
       public void windowClosing(WindowEvent evt)
       {
           System.exit(0);
       }
   };

   public FrameWithPicture()
   {
       //FOR FRAME'S TITLE
       super("DISPLAY IMAGE");
 
       //ADD WINDOW LISTENER FOR FRAME
       addWindowListener(wl);
   }

   //PAINT IMAGE(sample_picture.jpg) INTO FRAME
   public void paint(Graphics g)
   {
       Graphics2D g2d=(Graphics2D)g;
       AffineTransform at=new AffineTransform();
 
       //THIS WILL ROTATE THE IMAGE
       //YOU CAN TRY CHANGE THIS VALUE
       //THIS VALUE IS BASE ON radians value(ANGLE OF THE ROTATION IS IN RADIANS)
       //YOU ALSO CAN SET IT TO NEGATIVE VALUE LIKE -Math.PI/10
       at.rotate(Math.PI/10);
 
       Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");
       g2d.drawImage(a,at,this);
   }
}

CONVERT IMAGE INTO GRAYSCALE IN JAVA

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COMPLETE SOURCE CODE FOR GrayscaleImage.java

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import java.awt.Graphics;
import java.awt.Frame;
import java.awt.Image;
import java.awt.Toolkit;

import java.awt.image.BufferedImage;

import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.ImageIcon;

public class GrayscaleImage
{
public static void main(String[]args)
{
    //READ AN IMAGE FILE, sample_picture.jpg
    //METHOD getImage() CAN READ IMAGE FILE WITH FORMAT gif, jpg and png
    Image a=Toolkit.getDefaultToolkit().getImage("sample_picture.jpg");

    ImageIcon b=new ImageIcon(a);

    //GET PICTURE'S WIDTH
    int c=b.getIconWidth();
    System.out.println("WIDTH : "+c+" pixels");

    //GET PICTURE'S HEIGHT
    int d=b.getIconHeight();
    System.out.println("HEIGHT : "+d+" pixels");

    FrameWithPicture e=new FrameWithPicture();
    e.setSize(c,d);
    e.setVisible(true);
    e.setResizable(false);
}
}

//CLASS FrameWithPicture
class FrameWithPicture extends Frame
{
    //FOR FRAME CLOSE BUTTON
    WindowListener wl=new WindowAdapter()
    {
        public void windowClosing(WindowEvent evt)
        {
            System.exit(0);
        }
    };

    public FrameWithPicture()
    {
        //FOR FRAME'S TITLE
        super("DISPLAY IMAGE");
   
        //ADD WINDOW LISTENER FOR FRAME
        addWindowListener(wl);
    }

    //PAINT IMAGE(sample_picture.jpg) INTO FRAME
    public void paint(Graphics g)
    {
        super.paint(g);
        ImageIcon d=new ImageIcon("sample_picture.jpg");
        Image a=d.getImage();
   
        int imageWidth=d.getIconWidth();//GET IMAGE'S WIDTH
        int imageHeight=d.getIconHeight();//GET IMAGE'S HEIGHT
   
        //CREATE BufferedImage OBJECT AND SET TYPE OF CREATED IMAGE IS GRAYSCALE(BufferedImage.TYPE_BYTE_GRAY)
        BufferedImage bi=new BufferedImage(imageWidth,imageHeight,BufferedImage.TYPE_BYTE_GRAY);
        Graphics g2=bi.getGraphics();
        g2.drawImage(a,0,0,null);//draw color image(a) into buffered image(bi)
   
        g.drawImage(bi, 0, 0,null);//draw buffered image(bi) into frame
    }
}