Apache Commons FileUtils – File Operations
Apache Commons FileUtils has utility methods for file and directory manipulation. This post is on Apache Commons FileUtils file manipulation
Collectors minBy and maxBy
Collectors minBy and maxBy return a Collector that produces the minimal and maximal element according to a given Comparator
Comparator nullsFirst and nullsLast
Comparator nullsFirst and nullsLast methods returns a null-friendly comparator. It considers null to be less than or greater than any non-null value.
Summary Statistics in Java 8
Java 8 added three Summary Statistics classes viz., IntSummaryStatistics LongSummaryStatistics and DoubleSummaryStatistics used to collect statistics.
Apache Commons IOUtils
The Apache Commons IO has utilities to help with various IO functionalities. In this post, we will see about the Apache Commons IO IOUtils class.
Priority Queue in Java
A Priority Queue is an unbounded queue based on a priority heap. The elements are ordered according to their natural ordering or by a Comparator provided.
Bridge Design Pattern
The Bridge Design Pattern decouples an abstraction from its implementation so that the two can vary independently. This pattern is also known as Handle/Body.
Collectors partitioningBy in Java
The Collectors partitioningBy method in the Collectors class groups the elements of a stream by a predicate and an optional downstream collector
Three Ways to Sum a Stream of Numbers
In this post, we will see the three ways to sum a stream of numbers (using Java streams). We use the mapToInt, reduce, and collect methods.
Composite Design Pattern
The Composite Design Pattern composes objects into tree structures to represent part-whole hierarchies and lets clients treat individual objects and compositions of objects uniformly.