JAVA Swing: Custom JTextField

In this blow we are will design the custom JTextFields like:
1. RoundedCorner JTextField,
2. Image Background JTextField
3. JtextField with Hint text.

1. Rounded Corner TextField

import java.awt.Color;

import java.awt.Component;

import java.awt.Graphics;

import java.awt.Insets;

import javax.swing.JComponent;

import javax.swing.border.AbstractBorder;

import javax.swing.plaf.ComponentUI;

import javax.swing.plaf.metal.MetalTextFieldUI;

public class RoundedCornerTextFieldUI extends MetalTextFieldUI {

    private final static int ARC_WIDTH = 5;

    private final static int ARC_HEIGHT = 5;

    private final static int x = 0;

    private final static int y = 0;

    private final static int BORDER_TOP = 4;

    private final static int BORDER_BOTTOM = 4;

    private final static int BORDER_LEFT = 4;

    private final static int BORDER_RIGHT = 4;

    public static ComponentUI createUI(JComponent jComponent) {

       return new RoundedCornerTextFieldUI();

    }

    public void installUI(JComponent jComponent) {

       super.installUI(jComponent);

       jComponent.setBorder(new RoundedBorder());

       jComponent.setOpaque(false);

    }

    protected void paintSafely(Graphics graphics) {

       JComponent component = getComponent();

       if (!component.isOpaque()) {

           graphics.setColor(component.getBackground());

           graphics.fillRoundRect(x, y, component.getWidth()-1, component.getHeight()-1, ARC_WIDTH, ARC_HEIGHT);

       }

       super.paintSafely(graphics);

    }

    private static class RoundedBorder extends AbstractBorder {

       private static final long serialVersionUID = 1L;

       public void paintBorder(Component coponent, Graphics graphics, int x, int y, int width, int height) {

           Color oldColor = graphics.getColor();

           graphics.setColor(Color.gray);

           graphics.drawRoundRect(x, y, width-1, height-1, ARC_WIDTH, ARC_HEIGHT);

           graphics.setColor(oldColor);

       }

       public Insets getBorderInsets(Component c) {

           return new Insets(BORDER_TOP, BORDER_LEFT, BORDER_BOTTOM, BORDER_RIGHT);

       }

    }

}

2. Image Background and Hint Text TextField

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.event.FocusAdapter;

import java.awt.event.FocusEvent;

import javax.swing.ImageIcon;

import javax.swing.JComponent;

import javax.swing.JTextField;

public class HintBGImageTextField extends JTextField {

    private static final long serialVersionUID = 1L;

    private static final Font focusGainFont = new Font("Courier New", Font.PLAIN, 12);

    private static final Font focusLostFont = new Font("Courier New", Font.ITALIC, 12);

    private Image img;

    private HintBGImageTextField hintTextField;

   

    public HintBGImageTextField() {

       hintTextField = this;

    }

   

   @Override

    public void paintComponent(Graphics g) {

       g.drawImage(img, 0, 0, this);

       super.paintComponent(g);

    }

   

    public void setBackgroundImage(String imPath){

       img = new ImageIcon(imPath).getImage();

       setOpaque(false);

       new JComponent(){

           private static final long serialVersionUID = 1L;

           @Override

           public void paintComponent(Graphics g) {

              super.paintComponent(g);

           }

       };

    }

   

    public void setHint(String hint){

       hintTextField.setText(hint);

       hintTextField.setFont(focusLostFont);

       hintTextField.setForeground(Color.GRAY);

       hintTextField.addFocusListener(new FocusAdapter() {

            @Override

            public void focusGained(FocusEvent e) {

                if (hintTextField.getText().equals(hint)) {

                    hintTextField.setText("");

                } else {

                    hintTextField.setText(getText());

                }

                hintTextField.setFont(focusGainFont);

                hintTextField.setForeground(Color.BLACK);

            }

            @Override

            public void focusLost(FocusEvent e) {

                if ( hintTextField.getText().equals(hint) || getText().length() == 0) {

                    hintTextField.setText(hint);

                    hintTextField.setFont(focusLostFont);

                    hintTextField.setForeground(Color.GRAY);

                } else {

                    hintTextField.setText(getText());

                    hintTextField.setFont(focusGainFont);

                    hintTextField.setForeground(Color.BLACK);

                }

            }

        });

    }

}

3. Main Class

import javax.swing.JFrame;

import javax.swing.JTextField;

public class Main extends JFrame {

   

    public Main(){

       setDefaultCloseOperation(3);

       setSize(400, 350);

       setLayout(null);

      

           

       JTextField field = new JTextField();

       field.setBounds(5,35,200,25);

       field.setUI(new RoundedCornerTextFieldUI());

       add(field);

      

      

       HintBGImageTextField hintTextField  = new HintBGImageTextField();

       hintTextField.setBounds(5,65,200,25);

       hintTextField.setBackgroundImage("resources/textfield.png");

       hintTextField.setHint("Search...");

       add(hintTextField);

      

      

       setVisible(true);

       setResizable(false);

    }

   

    public static void main(String[] args) {

      

       Main main = new Main();

       main.setVisible(true);

    }

}

Image Folder path and Image

Output: