Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
753 views
in Technique[技术] by (71.8m points)

java: primitive arrays -- are they initialized?

If I use a statement in my code like

int[] a = new int[42];

Will it initialize the array to anything in particular? (e.g. 0) I seem to remember this is documented somewhere but I am not sure what to search for.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

At 15.10 Array Creation Expressions the JLS says

[...] a single-dimensional array is created of the specified length, and each component of the array is initialized to its default value

and at 4.12.5 Initial Values of Variables it says:

For type int, the default value is zero, that is, 0.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...