CODEWITHSUNDEEP
javaswingjtextfield
Toms
Toms

Reputation: 239

Does setText() method always set value to a string?

Does the method setText() always set to a string? If we want to set a Double value to the text field, hows it done?

Upvotes: 2

Views: 23594

Answers (3)

MC Emperor
MC Emperor

Reputation: 23037

setText() only accepts a String. In order to insert a double, you can just concatenate the double to a string:

double someDouble = 2.5;
yourJTextField.setText("" + someDouble);

Notice that the double displays as 2.5. To format the double, see String.format().

Edit, 5 years later

I agree with the other answers that it is cleaner to use Double.toString(someDouble) to do the conversion.

Upvotes: 1

JB Nizet
JB Nizet

Reputation: 692071

You transform the Double to a string first:

textField.setText(myDouble.toString());

At the risk of contradicting the other answers here, a primitive double should, IMHO, be transformed to a String using Double.toString(d) or String.valueOf(d), which expresses the intent more clearly (and is more efficient) than concatenation.

Upvotes: 4

camickr
camickr

Reputation: 324157

If you have an actual Double object then you can use:

textField.setText( doubleValue.toString() );

Or, if you have a double primitive you can use:

textField.setText( doubleValue + "" );

Upvotes: 2

Related Questions