java - static nested class lifetime

Question

1) when the lifetime of static nested class in Java begins? can static inner class be used before creation of the containing object?

I'm asking because I encountered the code:

  LinearLayout.LayoutParams layoutParams1 = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);

and I tried to answer the question:

2) what is LayoutParams to LinearLayout?

anyway if what I suspect doesn't relate to the syntax I would like to get answers for both 1 & 2.

possible duplicate of [Java static class initialization](http://stackoverflow.com/questions/3499214/java-static-class-initialization) — yitzih, Mar 05 '15 at 02:23
Is there a way I could know it? it looks to me like the syntax to create an object for a static nested class — Day_Dreamer, Mar 05 '15 at 02:24

score 4 · Accepted Answer · answered Mar 05 '15 at 03:05

An instance of a static nested class can be created without creating an instance of its outer class.

"static inner class" is an incorrect expression. JLS 8.1.3: An inner class is a nested class that is not explicitly or implicitly declared static.

LayoutParams is a static nested class of LinearLayout. LinearLayout is outer class of LayoutParams

java - static nested class lifetime

1 Answers1