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Java Collection Q&A » Set » memory

1. Very Compact Bitarray in Java stackoverflow.com

I'm looking for a very compact way of storing a dense variable length bitarray in Java. Right now, I'm using BitSet, but it seems to use on average 1.5*n bits of ...

2. HashSet of Strings taking up too much memory, suggestions...? stackoverflow.com

I am currently storing a list of words (around 120,000) in a HashSet, for the purpose of using as a list to check enetered words against to see if they are ...

3. How to use the least amount of memory to store a string in a hashset stackoverflow.com

I have a large amount of strings that need to be stored in a very compact fashion. Currently I am storing the strings (32 characters a-f/0-9) in HashSet<byte[]>. I am simply ...

4. Java.util.BitSet VS java.util.EnumSet in terms of performance and memory forums.oracle.com

Hi, I am working on a optimization, we are currently evaluating to use either BitSet or EnumSet. Has somebody encountered performance measuring between those types in terms of performance and memory? I guess for example the method "isEmpty" of a EnumSet is much faster then programmatically testing if a BitSet is empty. But in terms of internal memory consumption, is there ...

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