How to generate JLabel or JTextField on mouse click?

Question

How to generate JLabel or JTextField on mouse click?

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#1 by (3 votes)

7

I would like to know if there is a way to generate a JLabel or JTextField in the position where you click, in JPanel or JFrame .

Is it possible?

java jframe

asked by anonymous 19.02.2014 / 17:51

1 answer

"Geographic" location of indoor devices Divs floats in a container with height auto

score 3 · Accepted Answer

Yes, it is possible:

Defines layout with absolute positioning with setLayout(null) on target component.

Add a MouseListener to the component.

Implement the mouseClicked event:

Create the desired component.

Add it to the target component with the add method.

Defines positioning and size with setBounds .

Here is a simple example I did:

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JFrame;
import javax.swing.JTextField;

public class TextFieldGeneratorTest {

    private static int contador = 0;

    public static void main(String[] args) {

        //janela
        final JFrame janela = new JFrame("Test JTextField Generation");

        //posicionamento sem nenhum layout, isto é, absoluto
        janela.getContentPane().setLayout(null);

        //adiciona listener do mouse
        janela.getContentPane().addMouseListener(new MouseAdapter() {

            @Override
            public void mouseClicked(MouseEvent event) {

                //adiciona dinamicamente no clique
                final JTextField textField = new JTextField("Caixa " + ++contador);
                textField.setBounds(event.getX(), event.getY(), 200, 30);
                janela.getContentPane().add(textField);

            }
        });

        //exibe a janela
        janela.setSize(600,  600);
        janela.setVisible(true);

    }

}