Is there any way to get one side(i.e., right bordered line) of the jtextfield colored

Question

Hi I prepared one swing frame in which I placed two text fields. Is there any way to get one side(i.e., right bordered line) of the jtextfield colored? Please suggest. I checked many things, but I couldn't find.Thanks in advance.

Answer 1

In the example below I added a left side border of 5 pixels:

JTextField jtf = new JTextField();        
jtf.setBorder(BorderFactory.createMatteBorder(0, 5, 0, 0, Color.BLACK));

This is a right side border:

jtf.setBorder(BorderFactory.createMatteBorder(0, 0, 0, 5, Color.BLACK));

I hope this is what you are after

Answer 2

I would add a Border to the text field, something along the lines of:

Border oldBorder = jTextField.getBorder();
Border redBorder = BorderFactory.createMatteBorder(0, 0, 0, 5, Color.RED);
Border newBorder = BorderFactory.createCompoundBorder(redBorder, oldBorder);
jTextField.setBorder(newBorder);

This approach keeps the old border and wraps it inside your red (partial) border.

Answer 3

You could create your own CustomBorder class by extending from the Border class and creating your own custom border for your component. Set it by calling setBorder() on your Component's instance something like:

class MyBorder implements Border {

    @Override
    public void paintBorder(Component cmpnt, Graphics grphcs, int x, int y, int width, int height) {
        //draw your border here
    }

    @Override
    public Insets getBorderInsets(Component cmpnt) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public boolean isBorderOpaque() {
        throw new UnsupportedOperationException("Not supported yet.");
    }

}

Reference:

• http://docs.oracle.com/javase/7/docs/api/javax/swing/border/Border.html