CODEWITHSUNDEEP
javadatabaseeclipsecheckbox
TuffBee
TuffBee

Reputation: 33

Sum of multiple selected checkboxes in JAVA

If I use the "+ " sign it will just concatenate the values, but I need to find the mathematical values. I need to insert the quantity of a product. How to find the sum when multiple checkboxes are selected? I have tried this which concatenates.. Also the values need to go into the database, it is working with the concatenated values..

                 if(chckbx1.isSelected()){
                    qty= chckbx1.getText();
                    chckbx1.setSelected(true);
             }

             if(chckbx1.isSelected() && chckbx5.isSelected()){
                    qty= chckbx1.getText() + chckbx5.getText();
                    chckbx5.setSelected(true);
                    chckbx1.setSelected(true);
             }

Upvotes: 1

Views: 830

Answers (3)

dryairship
dryairship

Reputation: 6077

Yes, Using the + operator on Strings concatenates them.

So, you need to convert the Strings to numbers.
Depending upon what type of numbers the Strings contain (real or integer), you may parse them to numbers in one of the following ways:

  • qty= ""+ ( Integer.parseInt(chckbx1.getText()) + Integer.parseInt(chckbx5.getText()) );
  • qty= ""+ ( Double.parseDouble(chckbx1.getText()) + Double.parseDouble(chckbx5.getText()) );

Upvotes: 0

Sk. Arif Ahmed
Sk. Arif Ahmed

Reputation: 9

You may parse it to Integer using Integer.parseInt()

qty= (Integer.parseInt(chckbx1.getText()) + Integer.parseInt(chckbx5.getText())) + "";

Upvotes: 0

Tim B
Tim B

Reputation: 1983

You need to parse it to Double using Double.parseDouble()

qty= (Double.parseDouble(chckbx1.getText()) + Double.parseDouble(chckbx5.getText())) + "";

Upvotes: 1

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