Java - headMap, tailMap and subMap in NavigableMap
NavigableMap collection on Java provide methods to return the view of Map on sorted order of key. The most common methods are headMap, tailMap and subMap. he...
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Java - Java 8 Comparator to replace Guava compound comparing
Guava example 1 2 3 Collection.sort(list, Ordering.from((Comparator<Item>) Comparator.comparingInt(item -> item.getId())) .compound(Comparat...
Java - Guava API to implement compareTo with considering sorting ordering
Example of a chained comparison statement. 1 2 3 4 5 6 7 public int compareTo(Foo that) { return ComparisonChain.start() .compare(this.aStri...
Java - The article of Stream API under the hood
The following article is explaining the under the hood Java 8 Stream API. https://www.ibm.com/developerworks/library/j-java-streams-3-brian-goetz/index.html
Java - Converting Cassandra ResultSet to Java 8 Stream
1 2 3 4 5 6 7 8 Statement stmt = QueryBuilder().select().all().from('table'); ResultSet rs = session.execute(stmt); StreamSupport.stream( Spliterators.sp...