Java Developer Central

Google Guava Maps has many static utility methods operating on Map instances (Map, SortedMap, NavigableMap, BiMap etc.,).

The Collections2 utility class in the Google Guava library has four methods, viz., filter, transform, permutations and orderedPermutations.

The Google Guava Sets utility class has static utility methods pertaining to Set instances. This post covers the methods from the Sets class.

The Apache Commons Lang ObjectUtils class from the Apache Commons Lang3 library has many static utility methods operating on Object instances.

The Apache Commons ComparatorUtils provides utils for creating and using comparators from org.apache.commons.collections4.comparators package.

The Apache Commons Collections SetUtils class has utility methods and decorators for Set and SortedSet instances.

In this post, we will explore all the utility methods and decorators for List instances in the Apache Commons Collections ListUtils class.

We use the Java Stream map (an intermediate operation) to map an element in a stream to a different value (of the same or different type).

In this post, we will learn about using Java Stream min and max methods to find the minimum and the maximum element in a Java Stream.

Using Java Stream sorted operation on a stream will return a stream with the elements of the stream sorted according to their natural order.