getting integer values from textfield

Question

I am trying to get Integer values from my jtextfield but not able to it is showing incompatible datatypes required int found string. Is there some other way of writing my code is as follows and i want to get only integer values

private void jTextField2MouseClicked(java.awt.event.MouseEvent evt) {
        if(evt.getSource()==jTextField2){
            int jml = jTextField3.getText();
            jTextField1.setText(numberToWord(jml));

        }
    }

1) Consider using a `JSpinner` with `SpinnerNumberNodel` instead. 2) Both `JTextField` & `JSpinner` have better listeners than `MouseListener` available - they are `ActionListener` & `ChangeListener` respectively. — Andrew Thompson, Jan 05 '13 at 06:35
See also [this answer](http://stackoverflow.com/questions/9344708/jcombobox-to-list-age/9345991#9345991) related to `JSpinner`. The models make it a versatile and intuitive (for the user) component. — Andrew Thompson, Jan 05 '13 at 06:55

score 12 · Accepted Answer · answered Jan 05 '13 at 06:19

12

You need to use Integer.parseInt(String)

private void jTextField2MouseClicked(java.awt.event.MouseEvent evt) {
        if(evt.getSource()==jTextField2){
            int jml = Integer.parseInt(jTextField3.getText());
            jTextField1.setText(numberToWord(jml));

        }
    }

answered Jan 05 '13 at 06:19

Rahul

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3

Be sure to handle `NumberFormatException`, which `parseInt()` will throw if the use inputs something non-numeric. – Mel Nicholson Jan 05 '13 at 06:24
Yes, it is a checked exception so it will force the user to handle it. I have left some space for OP to think over. – Rahul Jan 05 '13 at 06:25
1

I think `trim()` would help here as well. – Vinay Jan 05 '13 at 06:28

score 4 · Answer 2 · edited Jun 20 '20 at 09:12

4

As You're getting values from textfield as jTextField3.getText();.

As it is a textField it will return you string format as its format says:

String getText()

      Returns the text contained in this TextComponent.

So, convert your String to Integer as:

int jml = Integer.parseInt(jTextField3.getText());

instead of directly setting

   int jml = jTextField3.getText();

edited Jun 20 '20 at 09:12

Community

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1

answered Jan 05 '13 at 06:36

Parth Soni

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getting integer values from textfield

2 Answers2