[JAVA] OPEN FILE TO TEXTAREA

import javax.swing.*;

import java.awt.*;

import java.io.*;

public class FileToTextArea extends JFrame {

    private JTextArea textArea;

    public FileToTextArea() {

        setTitle("File to TextArea");

        setSize(600, 400);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        textArea = new JTextArea();

        JScrollPane scrollPane = new JScrollPane(textArea);

        add(scrollPane, BorderLayout.CENTER);

        JButton openButton = new JButton("Open File");

        openButton.addActionListener(e -> openFile());

        add(openButton, BorderLayout.SOUTH);

        setVisible(true);

    }

    private void openFile() {

        JFileChooser fileChooser = new JFileChooser();

        int result = fileChooser.showOpenDialog(this);

        if (result == JFileChooser.APPROVE_OPTION) {

            File selectedFile = fileChooser.getSelectedFile();

            try (BufferedReader reader = new BufferedReader(new FileReader(selectedFile))) {

                textArea.setText(""); // Clear existing text

                String line;

                while ((line = reader.readLine()) != null) {

                    textArea.append(line + "\n");

                }

            } catch (IOException ex) {

                JOptionPane.showMessageDialog(this, "Error reading file: " + ex.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);

            }

        }

    }

    public static void main(String[] args) {

        SwingUtilities.invokeLater(FileToTextArea::new);

    }

}

[JAVA] CREATE FILE FROM TEXTAREA

import javax.swing.*;
import java.io.*;

public class TextAreaToFile {

public static void main(String[] args) {
JFrame frame = new JFrame("Text Area to File");
JTextArea textArea = new JTextArea("Enter text here.");
JButton saveButton = new JButton("Save to File");

saveButton.addActionListener(e -> {
String text = textArea.getText();
File file = new File("output.txt");

try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
writer.write(text);
JOptionPane.showMessageDialog(frame, "File saved successfully!");
} catch (IOException ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(frame, "Error saving file.", "Error", JOptionPane.ERROR_MESSAGE);
}
});

JPanel panel = new JPanel();
panel.add(new JScrollPane(textArea));
panel.add(saveButton);

frame.add(panel);
frame.setSize(400, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}

[JAVA] CREATE FILE FROM TEXTFIELD

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

public class FileCreator extends JFrame {

    private JTextField textField;

    private JButton createButton;

    public FileCreator() {

        setTitle("File Creator");

        setSize(300, 150);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setLayout(new FlowLayout());

        textField = new JTextField(20);

        createButton = new JButton("Create File");

        createButton.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                createFileFromTextField();

            }

        });

        add(textField);

        add(createButton);

        setVisible(true);

    }

    private void createFileFromTextField() {

        String text = textField.getText();

        File file = new File("output.txt"); // Change the filename here as needed

        try (FileWriter writer = new FileWriter(file)) {

            writer.write(text);

            JOptionPane.showMessageDialog(this, "File created successfully!");

        } catch (IOException e) {

            JOptionPane.showMessageDialog(this, "Error creating file: " + e.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);

            e.printStackTrace();

        }

    }

    public static void main(String[] args) {

        SwingUtilities.invokeLater(new Runnable() {

            @Override

            public void run() {

                new FileCreator();

            }

        });

    }

}

[JAVA] create file from object use Write()

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.io.Serializable;
import java.io.ByteArrayOutputStream;
import java.io.ObjectOutputStream;

class MyObject implements Serializable {
String data = "Hello, World!";
}

public class CreateFileFromObject {
public static void main(String[] args) {
MyObject myObject = new MyObject();
try {
byte[] bytes = serializeObject(myObject);
Files.write(Paths.get("myobject.bin"), bytes);
} catch (IOException e) {
e.printStackTrace();
}
}

private static byte[] serializeObject(Object obj) throws IOException {
ByteArrayOutputStream boas = new ByteArrayOutputStream();
try (ObjectOutputStream oos = new ObjectOutputStream(boas)) {
oos.writeObject(obj);
return boas.toByteArray();
}
}
}

[JAVA] CREATE FILE FROM OBJECT

import java.io.File;

   import java.io.FileOutputStream;

   import java.io.IOException;

   import java.io.ObjectOutputStream;

   import java.io.Serializable;

   class MyObject implements Serializable {

       String data = "Hello, World!";

   }

   public class CreateFileFromObject {

       public static void main(String[] args) {

           MyObject myObject = new MyObject();

           File file = new File("myobject.bin");

           try (FileOutputStream fos = new FileOutputStream(file);

                ObjectOutputStream oos = new ObjectOutputStream(fos)) {

               oos.writeObject(myObject);

           } catch (IOException e) {

               e.printStackTrace();

           }

       }

   }

[JAVA] CREATE FILE

import java.io.File;

import java.io.IOException;

public class CreateFile {

    public static void main(String[] args) {

        try {

            File file = new File("myFile.txt");

            if (file.createNewFile()) {

                System.out.println("File created successfully.");

            } else {

                System.out.println("File already exists.");

            }

        } catch (IOException e) {

            System.out.println("An error occurred.");

            e.printStackTrace();

        }

    }

}

[JAVA] RESOLUTION INFO

import java.awt.Image;

    import java.awt.image.BaseMultiResolutionImage;

    import java.awt.image.BufferedImage;

    import java.util.List;

    import javax.imageio.ImageIO;

    import java.io.File;

    import java.io.IOException;

    

    public class MultiResolution {

        public static void main(String[] args) {

            try {

                File imageFile = new File("path/to/your/image.jpg");

                BufferedImage image = ImageIO.read(imageFile);

                if (image != null) {

                    int width = image.getWidth();

                    int height = image.getHeight();

                    BufferedImage scaledImage = new BufferedImage(width/2, height/2, BufferedImage.TYPE_INT_ARGB);

                    AffineTransform at = AffineTransform.getScaleInstance(0.5, 0.5);

                    AffineTransformOp scaleOp = new AffineTransformOp(at, AffineTransformOp.TYPE_BILINEAR);

                    scaledImage = scaleOp.filter(image, scaledImage);

                    // Create a list of images with different resolutions.

                     List<Image> images = List.of(image, scaledImage);

                    // Create a multi-resolution image.

                    BaseMultiResolutionImage multiResImage = new BaseMultiResolutionImage(images);

                    Image bestImage = multiResImage.getResolutionVariant(100,100);

                    System.out.println("Best image dimensions: " + bestImage.getWidth(null) + "x" + bestImage.getHeight(null));

                } else {

                    System.out.println("Failed to load the image.");

                }

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

    }