I have two forms in one I put the number of equations and the other should build as many jtextbox as the number I put in the other frame 'public
void Mostrar(){
for (int i = 0; i < NumeroDeEcuaciones; i++) {
JTextField input = new JTextField("texto por defecto",20);
this.add(input);
}
}
but do not believe me the textbox