java - understanding static {}

Question

I came across this code in which I did not understand what static {} means:

public class BookProvider extends ContentProvider
{

private static final String TAG = "BookProvider";

private static HashMap<String, String> sBooksProjectionMap;
static
{
sBooksProjectionMap = new HashMap<String, String>();
sBooksProjectionMap.put(BookTableMetaData._ID,
BookTableMetaData._ID);

sBooksProjectionMap.put(BookTableMetaData.BOOK_NAME,

}

It is static initializer that equals to static constructors in some other languages (e.g. C#). — Dmitry Bychenko, Jan 07 '14 at 13:15

score 1 · Answer 1 · answered Jan 07 '14 at 13:15

1

It's a static initializer. It's executed when the class is loaded (or initialized).

For more details please read http://docs.oracle.com/javase/tutorial/java/javaOO/initial.html

answered Jan 07 '14 at 13:15

A Paul

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java - understanding static {}

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