extends double?

[Mark & Candice White]

Is there a way to take an existing
simple type like double and extend it?
I would like to add a few methods without
reimplementing all the rest as calls
to a composed one.

public class doubleR extends double
{
// all existing constructors and methods call double
public toRoman()
{
return String roman = "XXIV"; // translation of double
}
}


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[Hal Rosser]

No

"Mark & Candice White" <mh****@askif.youneedit.net> wrote in message
news:10***********@corp.com...

Is there a way to take an existing
simple type like double and extend it?
I would like to add a few methods without
reimplementing all the rest as calls
to a composed one.

public class doubleR extends double
{
// all existing constructors and methods call double
public toRoman()
{
return String roman = "XXIV"; // translation of double
}
}


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[Ryan Stewart]

"Mark & Candice White" <mh****@askif.youneedit.net> wrote in message
news:10***********@corp.com...

Is there a way to take an existing
simple type like double and extend it?
I would like to add a few methods without
reimplementing all the rest as calls
to a composed one.

public class doubleR extends double
{
// all existing constructors and methods call double
public toRoman()
{
return String roman = "XXIV"; // translation of double
}
}

First, you'd extend Double, not double. "double" is a primitive type and not
a class which could be extended. Secondly, Double is final, meaning it
cannot be extended. So the short answer to your question is "no". Finally,
please post to comp.lang.java.help in the future. This group is not supposed
to exist.

[Wouter]

Hal Rosser wrote:

No

"Mark & Candice White" <mh****@askif.youneedit.net> wrote in message
news:10***********@corp.com...

Is there a way to take an existing
simple type like double and extend it?
I would like to add a few methods without
reimplementing all the rest as calls
to a composed one.

public class doubleR extends double
{
// all existing constructors and methods call double
public toRoman()
{
return String roman = "XXIV"; // translation of double
}
}


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double is a primitive type, look in the API for Double (with capital
letter). This is a so called "wrapper" class of double.

[Murray]

double is a primitive type, look in the API for Double (with capital
letter). This is a so called "wrapper" class of double.

And the answer is still no

[John Schank]

> Is there a way to take an existing

simple type like double and extend it?
I would like to add a few methods without
reimplementing all the rest as calls
to a composed one.

public class doubleR extends double
{
// all existing constructors and methods call double
public toRoman()
{
return String roman = "XXIV"; // translation of double
}
}

Hi there,
Based on your example, I'd say you just wanted a different way to
format a double. You should look at Formatters, in the java.text
package. Specifically, DecimalFormat, and see how that works.
John