Angle brackets in bfs java code

Question

I am beginner to java and i have code for BFS algorithm.

What do the angle brackets mean?

Queue<Node> q = new LinkedList<Node>().

You might want to do some searching before asking in the future — Hovercraft Full Of Eels, Aug 05 '17 at 19:47

score 1 · Answer 1 · answered Aug 05 '17 at 19:45

When Collections (like Queue) were first introduced in earlier versions of Java, they could only contain "Object".

Java 5 introduced "generics", which allowed you to declare a specific TYPE a collection contains (rather than just the "object" superclass).

That's what the angle brackets mean: a generic "Queue" containing type "Node".

Look here for more details:

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