Member Avatar for gunjannigam

I want to have two textfields which will have the following validations
1) Both should be Integers
2) The value in one textfield should be a integer multiple of other

I have used two JFormattedTextFields to this. This is what i have done till now

NumberFormat updateFormat,sampleFormat;
updateFormat = NumberFormat.getNumberInstance();
updateFormat.setMaximumFractionDigits(0);
updateFormat.setParseIntegerOnly(true);
sampleFormat = NumberFormat.getNumberInstance();
sampleFormat.setMaximumFractionDigits(0);
sampleFormat.setParseIntegerOnly(true);
javax.swing.JFormattedTextField jFormattedTextField1 =new javax.swing.JFormattedTextField(updateFormat);        
javax.swing.JFormattedTextField jFormattedTextField2 = new javax.swing.JFormattedTextField(sampleFormat);

With the help of this my first part is complete
Now I am stuck with the second part, i.e. jFormattedTextField1 value should be a Integer multiple of jFormattedTextField2. I think I need to customize my NumberFormat by extending it. But How should I do that? Please help me out

  • 3 Contributors
  • 3 Replies
  • 265 Views
  • 9 Hours Discussion Span
  • Latest Post Latest Post by mKorbel
Member Avatar for gunjannigam

Just attach listener to first field something like addInputMethodListener(InputMethodListener l) and then listen for inputMethodTextChanged(InputMethodEvent event) once that happens do your calculation for second field

Hi,
I tried to used InputMethodListener but the event inputMethodTextChanged was not triggered when the text in JFormattedTextField changed. Initially I also tried use propertyChange Listener but that was triggered many times even the input was not changed so I could not control it.
Here is the code

jFormattedTextField1.addInputMethodListener(this);

My class implements InputMethodListener
and these were the listeners

public void inputMethodTextChanged(InputMethodEvent event) {
        //throw new UnsupportedOperationException("Not supported yet.");
System.out.println("Text Changed");
        System.out.println("1"+event.getText());

    }

    public void caretPositionChanged(InputMethodEvent event) {
        //throw new UnsupportedOperationException("Not supported yet.");
System.out.println("Caret Changed");
         System.out.println("2"+event.getText());
    }
Edited by gunjannigam because: n/a
Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.