Java Collection To Map

You will be able to use. Specifically in java, a collection refers to any group of objects stored in a single structure belonging to some class stored in java.util. This method simply returns a function that always returns its input argument.

In simple words, the map () is used to transform one object into other. Specifically in java, a collection refers to any group of objects stored in a single structure belonging to some class stored in java.util. Collectors.tomap () method is used to convert the stream of object into the map as needed.

Here is the syntax used for converting java collection to list.

For example, by using the map () function, you can convert a list of string into a list of integer by applying the integer.valueof () method to each string on the input list. It provides methods to get key and value. Java collections framework is a unified architecture for representing and manipulating collections. Introduced in java 8, the stream api is used to process collections of objects.