CODEWITHSUNDEEP
javaandroidstatic-classes
Day_Dreamer
Day_Dreamer

Reputation: 3373

java - static nested class lifetime

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.

Upvotes: 3

Views: 313

Answers (1)

Evgeniy Dorofeev
Evgeniy Dorofeev

Reputation: 135992

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

Upvotes: 4

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