如何使用JTextArea设置JScrollPane背景透明和JScrollBarr可见？

Question

This is what I want to achieve:

What I tried:

1. jTextArea.setOpaque(false); this makes JTextArea transparent.
2. jScrollPane.setOpaque(false); this gives no effect

3. then I tried this which hides both JScrollPane and JTextArea .

    jScrollPane.getViewPort().setOpaque(false); jScrollPane.setOpaque(false); 

4. then I tried this which hides both JScrollPane and JTextArea .

    jScrollPane.setViewPort(new MyViewPort()); class MyViewPort() extends JViewPort{ public MyViewPort(){ setOpaque(false); } } 

What I want to achieve is JScrollPane background transparent and transparent JTextArea where I should able to add text and visible JScrollPane .

Update: I did like this I can add text in textArea but the jscrollPane is not transparent:

public class TransparentBackground extends javax.swing.JFrame {

    public TransparentBackground() {
        jScrollPane = new javax.swing.JScrollPane();
        jTextArea = new javax.swing.JTextArea();
        lblBackground = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());

        jTextArea.setColumns(20);
        jTextArea.setRows(5);
        jScrollPane.setViewportView(jTextArea);
        jScrollPane.getViewport().setOpaque(false);
        jScrollPane.setOpaque(false);
        jTextArea.setOpaque(false);

        getContentPane().add(jScrollPane, new org.netbeans.lib.awtextra.AbsoluteConstraints(40, 40, 580, 300));

        lblBackground.setIcon(new javax.swing.ImageIcon(getClass().getResource("/bg.png"))); // NOI18N
        getContentPane().add(lblBackground, new org.netbeans.lib.awtextra.AbsoluteConstraints(0, 0, 680, 390));

        pack();
    }

And When I use

jScrollPane.setViewPort(new MyViewPort());
class MyViewPort() extends JViewPort{
    public MyViewPort(){
        setOpaque(false);
    }
}

Both textArea and JScrollPane disappears(transparent) but need jTextArea transparent and editable or can add text in it.

When I set custom view port result is like this

Answer 1

I don't know whats wrong with privious code, may be due to the use of drag and drop. Here is code that worked. Thank you Camickr and MadProgrammer for you suggestion. :)

import java.awt.Dimension;
import java.awt.FlowLayout;
import javax.swing.*;

public class TransparentBackground1 extends JFrame {
    private javax.swing.JScrollPane jScrollPane;
    private javax.swing.JTextArea jTextArea;
    private javax.swing.JLabel lblBackground;

    public TransparentBackground1() {
        setPreferredSize(new Dimension(675, 375));
        jScrollPane = new JScrollPane();
        jTextArea = new JTextArea();
        lblBackground = new JLabel();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        getContentPane().setLayout(new FlowLayout());

        jTextArea.setColumns(20);
        jTextArea.setRows(5);
        jScrollPane.setViewportView(jTextArea);

        //Code To make transparent
        jScrollPane.getViewport().setOpaque(false);
        jScrollPane.setOpaque(false);
        jTextArea.setOpaque(false);


        lblBackground.setIcon(new ImageIcon(getClass().getResource("/bg.png"))); // NOI18N

        pack();
    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new TransparentBackground().setVisible(true);
            }
        });
    }
}

Here is Output