Re: How to initialise a final static String array

From:

Knute Johnson <nospam@knutejohnson.com>

Newsgroups:

comp.lang.java.gui

Date:

Sun, 18 Mar 2012 09:50:29 -0700

Message-ID:

<jk53ol$ghd$1@dont-email.me>

On 3/18/2012 5:52 AM, Cecil Westerhof wrote:

I want to use final for my static variables. I now do for example:
    private static final Connection conn;
    private static final Combo container;

and
    static {
        Connection tempConn;
        Statement tempStmt;
        try {
            Class.forName("org.h2.Driver");
            tempConn = DriverManager.getConnection(
                    "jdbc:h2:tcp://localhost/~/databases/stock", "sa", "");
            tempStmt = tempConn.createStatement();
        } catch (Exception e) {
            tempConn = null;
            tempStmt = null;
        }
        conn = tempConn;
        stmt = tempStmt;

and
        if (conn == null) {
            throw new Exception("Could not initialise");
        }

The only problem I have is with my array of String.
I now have:
    private static final String[] titles = {
        "Stock",
        "Number",
        "Dare",
        "Container"
    };

Because when I put it in the static block I get an error.
Beside this I can execute a statement like:
        titles[0] = "changed";

Can I get the initialisation in the static part? And in such a way
that the elements can not be changed?

public class test {
     static final String[] words;

     static {
         words = new String[] {"hello","world"};
     }

     public static void main(String[] args) {
         System.out.println(words[0]);
     }
}

Don't know why you would want to do that though.

--

Knute Johnson