Java string concat() method concatenates multiple strings. This method appends the specified string at the end of the given string and returns the combined string. We can use concat() method to join more than one strings.

What is concatenation and when should it be used?

Concatenate, concatenation, or concat is a term that describes combining a string, text, or other data in a series without any gaps. In programming languages, a function like strcat (string concatination in C) or an operator is used to denote concatenation.

What is the purpose of concatenation?

The word concatenate is just another way of saying "to combine" or "to join together". The CONCATENATE function allows you to combine text from different cells into one cell.