Re: intialising static finals with exceptions

From:

Lew <lew@lewscanon.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 17 Jan 2008 22:21:45 -0500

Message-ID:

<MLWdnUREhO_Xhg3anZ2dnUVZ_gOdnZ2d@comcast.com>

Gunter Herrmann wrote:

Hi!

Thomas Schodt wrote:

class MyClass {
  static final int FIXED;
  static final int FIXEDdefaultvalue = 0;
  static { // static constructor block - this goes into <clinit>
    int tmp = FIXEDdefaultvalue;
    try {
      tmp = ForeignObject.mayThrow();
    } catch (Exception ex) {
      // ignore?
    }
    FIXED = tmp;
  }
}

class ForeignObject {
    static int mayThrow() throws Exception
    {
        return 1;
    }
}

or:

Interface ApplicationConstants

lower-case "i" for the keyword 'interface'

{
public static final Connection myFinalConnection
= Initial.getConnection();

It's against the spirit of interfaces to implement things, in what they call
the Constant Interface Antipattern, and creates interesting risks.

<http://java.sun.com/docs/books/effective/>
Item 17.

Also, if you're initializing using the public static method of class Initial
anyway, why do you need the interface? Just use the Initial method.

}

Class Initial

The keyword 'class' is spelled with all lower-case letters.

{
    public static Connection getConnection()
    {
        Connection returnValue = null;
        try
        {
            returnValue = something();
        }
        catch (SQLException sqlex)
        {
            // some logging
        }
        return returnValue;
    }
}

--
Lew