How to determine the size of a Jtextfield?

Question

I’m doing a program involving the Pitgora theorem, and I’d like to leave a triangle in the middle, with three Jtextfields around the three sides of it. I did that, but the problem is that when I create Jtextfield and add it to the desired Container, it gets huge. It’s a very large white rectangle that when I click to type, comes out a small letter. So my question is: How can I change the size of this Jtextfield to decrease it and avoid unnecessary sizes?

Answer 1

Try to use the setBounds, see here.

Example:

public void teste()
    {
        //posição da caixa de texto no eixo horizontal em pixeis 
        int posX = 10;

        //posição da caixa de texto no eixo vertical em pixeis 
        int posY = 10;

        //largura da caixa de texto em pixeis
        int largura = 10;

         //altura da caixa de texto em pixeis
        int altura = 10;
        //é necessário instanciar antes o objecto
        JTextField cxaTexto = new JTextField();

        cxaTexto.setBounds(posX, posY, largura, altura);
    }