Little java thing wreckin me head

Slaanesh

Dont get to ask how this is done till Monday so I thought I would ask here.

When getting data in from a textfield how do you recieve it as a double ?
Eg. 4.3 rather than an integer of just 4.

Slaan

Enygma

Look up 'casting'

satchmo

Double.parseDouble(String) should do the trick, ie:

double d=Double.parseDouble(t.getText());

where t is the TextField.

Slaanesh

Nice one ta.

Slaanesh

parseDouble is not a method in class Double.

satchmo

Yes it is...
What JDK version are you using?

I'm using 1.3 and I just tried this program:

class testdouble{
	public static void main(String args[]){
		double d=Double.parseDouble("4.3");
		System.out.println(d);
	}
}

and it compiled and ran fine for me.

satchmo

I looked it up and parseDouble has only been in JDK since v1.2, so if you're still using an earlier version then you'll need to get a newer one.

If you are using v1.2 or above then you might try importing java.lang.Double at the top of your program, although you shouldn't need to.

Alternatively, this should work in any version:

double d=(new Double("4.3")).doubleValue();