Re: startup code

Eric Sosman <esosman@ieee-dot-org.invalid>
Wed, 29 Aug 2012 15:41:36 -0400
On 8/29/2012 2:58 PM, Patricia Shanahan wrote:

On 8/29/2012 11:18 AM, bob smith wrote:

On Wednesday, August 29, 2012 10:28:09 AM UTC-5, Patricia Shanahan wrote:

On 8/29/2012 8:14 AM, bob smith wrote:


I have a font class, and it needs to load a bitmap containing the

When do you need the bitmap? For example, it might be needed on first

call to some static method in the class, or the first time an instance

of the class is created ...


On first call to some static method in the class

In that case, put the initialization in a static initializer:

static {
   // create the bitmap

It will be run on the first event that causes initialization of the
class. Invocation of a static method is one of those events.

     "What she said," with a stylistic suggestion: If the code to
create the bitmap grows to more than a very few lines, consider
putting them in a private static method of their own and calling
that method from the static initializer:

    class Thing {
        static {

        /** Called only during class initialization. */
        private static void createTheBitmap() {
            // create the bitmap

Doesn't change the code's meaning in any significant way, but
may make it easier to debug/adapt/refactor later on.

Eric Sosman

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