CODEWITHSUNDEEP
javafloatbuffer
user195488
user195488

Reputation:

Determine Number of Elements in a FloatBuffer

FloatBuffer has the method capacity() which tells us the maximum capacity of the FloatBuffer. However, it does not tell us how many elements are in that buffer. So how can I determine the number of elements in a FloatBuffer? I am trying to determine if my FloatBuffer is full or partially full.

Upvotes: 4

Views: 4953

Answers (4)

YBrush
YBrush

Reputation: 310

For debugging purpose just use

floatBuffer.toString()

At the end of the string the informations about the current position and the capacity will be shown, like

...[pos=0 lim=1024 cap=1024]

Upvotes: 0

Jord Sonneveld
Jord Sonneveld

Reputation: 456

So how can I determine the number of elements in a FloatBuffer?

Wouldn't it just be the position() ?

To determine if you can write more to it, just test for fb.remaining() > 0 or fb.hasRemaining().

Upvotes: 0

Tim Niblett
Tim Niblett

Reputation: 1187

You can't. As with an array of floats you can get the length but which ones have been set is determined by the application.

Upvotes: 2

Jon Skeet
Jon Skeet

Reputation: 1500983

I can never keep the NIO buffer's straight in my head, but remaining() might be what you're after...

Returns the number of elements between the current position and the limit.

(Or just use hasRemaining() if you're after a simple Boolean...)

Upvotes: 8

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