Apr 1, 2015 · Sharing a semaphore or other java object over a cluster using standard JDK libraries

Aug 14, 2018 · ReplicatedHashMap is one class of 700 lines, so it isn't particularly complex, and uses JGroups, which has been used for decade (s) in production. If you need something …

Oct 19, 2011 · I have a Java application running in clustered hardware. I use Hashmap as cache. I want cache to be clustered also. Are there some open source java project to synchronize …

Implementation of a ConcurrentMap with replication of the contents across a cluster. Any change to the hashmap (clear (), put (), remove () etc) will transparently be propagated to all replicas …

Hash table based implementation of the Map interface. This implementation provides all of the optional map operations, and permits null values and the null key. (The HashMap class is …

Mar 7, 2025 · In Java, HashMap is part of the Java Collections Framework and is found in the java.util package. It provides the basic implementation of the Map interface in Java. HashMap …

for(Cluster currentCluster: clusters) for(DataPoint currentPoint: currentCluster.getEntireCluster()) sse+=currentCluster.getCenter().getSquaredEuclideanDistance(currentPoint);

Jan 8, 2024 · Learn about the K-Means clustering algorithm using a real-world dataset from Last.fm

To access a value in the HashMap, use the get() method and refer to its key: Try it Yourself » To remove an item, use the remove() method and refer to the key: Try it Yourself » To remove all …

May 19, 2012 · If you want a cache that provides a Java HashMap interface and can easily support gigabytes of cache data, with no expiry, then check out Oracle Coherence. This would …