We can combine several lists of values into a single list of values using flatMap(). It’s called flatMap() because it flattens the Stream.
For Example, let’s say we have the below lists of names:
list1 = [“Gyan”,”Satya”,”Ram”]
list2 = [“Rohit”,”Jitu”]
list3 = [“Atul”,”Ajay”,”Praveen”,”Raj”]
After using flatMap(), we will end up with the below single list:
list = [“Gyan”,”Satya”,”Ram”,”Rohit”,”Jitu”,”Atul”,”Ajay”,”Praveen”,”Raj”]
Output
