Re: How to "trim" a big class?

From:

"Oliver Wong" <owong@castortech.com>

Newsgroups:

comp.lang.java.programmer

Date:

Fri, 15 Dec 2006 11:46:39 -0500

Message-ID:

<QjAgh.23011$qH2.177082@wagner.videotron.net>

"Shawn" <shaw@nospam.com> wrote in message
news:eluhca$tki$1@news.nems.noaa.gov...

Hi,

I have a big class from somebody:

public class BigClass
{
public void A()
{
...//code
}
public void B()
{
...//code
}
...
public void Z()
{
...//code
}

}

Now I want to make another class of mine, which only needs methods A(),
C(), M(). I don't want to extend BigClass because it is too big. How can I
do it?

One way I am thinking is:

public class MyClass
{
BigClass big = new BigClass();
public void A()
{
big.A();
}
public void C()
{
big.C();
}
public void M()
{
big.M();
}
}

Thank you very much.

Are you allowed to modify BigClass? Perhaps you could do something like:

public abstract class MySuperClass {
  public void A() {
    /*code*/
  }

  public void C() {
    /*code*/
  }

  public void M() {
    /*code*/
  }
}

public class BigClass extends MySuperClass {
  public void B() {
    /*code*/
  }

  public void D() {
    /*code*/
  }

  public void Z() {
    /*code*/
  }
}

public class MyClass extends MySuperClass {
}

    - Oliver