Handle large data structure in Java

Question

I\'m working on a Java application that needs working on very large matrices. For example multiplying two 10 million * 10 million matrices! Of course the Java heap does not

Answer 1

Well if you are forced to use Java and can't write the code that deals with this as native methods (that is, by telling Java to call some C code instead) then the most efficient thing to do would properly be to use a simple binary file. I would stay away from databases in this case because they are slower than direct file access and you don't need the features they offer.