Category: Java

Unmodifiable maps are “read-only” wrappers over other collections. They do not support any modification operations such as add, remove, and clear, but their underlying collection can be changed.

This post will discuss how to convert a string to a char array in Java.

This post will discuss how to remove null values from a list using streams in Java 8 and above.

In this post, we will explain why character array is preferred over String for storing highly sensitive information in Java.

This post will discuss how to split a list into two sublists in Java using Java Collections, Java 8, Guava library, and Apache Common Collections.

Apache Commons’s MultiValuedMap interface allows mapping a single key to multiple values in Java, unlike java.util.Map, where a key can only be associated with a single value.

This article will talk about the Ints class by Guava. The com.google.common.primitives package by Guava provides utility classes for all primitives types such as Ints, Longs, Chars, Doubles, etc.

This post will flatten an array or a list using the Stream.forEach() method in Java 8 and above.

This post will check if a string starts with a number or not in Java.

This post will discuss how to convert string in Java to different wrapper types and primitive data types supported by Java.

The Arrays class is a member of the Java Collections Framework and contains various static utility methods for array manipulation. This post will discuss the difference between toString() and deepToString() method of the Arrays class in Java.