Question

I working in Java Swing and I am generating a dynamic form with control names opc1_1, opc1_2, opc1_3, opc2_1, opc2_2, etc.
How Do I get the value of each one of controls dynamically?
I put a very bad example for illustration

for(int i = 1; i < 10; i ++) {
    Control objControl = get("opc1_" + i);
      if(objControl == JComboBox)
        System.out.println(objControl.getSelectedItem().toString());
      else if(objControl == JTextField)
        System.out.println(objControl.getText); 
}

Thanks so much

Answer 1

Use an array/list to store your Control objects, the names of your Control objects in your code aren’t important.

Then just iterate through your array/list like you would for any other array/list to get the value of each one of your Control objects.

Also, = is for assignment, == is for comparison, and instanceof is used for checking if an object is a specific type. You generally try and avoid using the instanceof operator in good OO design.