Matlab matrix functions in java

Question

I noticed that Matlab does perform some matrix function, for example, adding 5 to all elements of the n * n array occurs almost instantly, even if the matrix is ​​large, because you do not need to iterate over each element, doing the same in java, the for loop takes forever if the matrix is ​​large.

I have two questions: are there efficient built-in classes in java for performing matrix operations, and secondly, how can I encode something to more efficiently update all elements of a large matrix in java.

Answer 1

Colt may be the fastest.

"Colt Java". ", IBM Watson Ninja , Java BLAS 90% Fortran."

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Java Matrix Librar y

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Answer 2

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http://code.google.com/p/matrix-toolkits-java/

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http://code.google.com/p/java-matrix-benchmark/

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http://www.ujmp.org/java-matrix/benchmark/

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