To illustrate how generics are used in the Java Collections Framework, let’s look at some examples. List and ArrayList with generics In the above example, we already briefly explored a simpler ...

Java’s collections like arrays and lists are foundational building blocks. Functional programming techniques are at times the ideal way to work with these collections.

Remove Java List duplicates through code The first two examples to solve this deduping problem use specialized Java components and APIs. However, it’s a fun exercise to just use the standard loop ...

Donald Raab, creator of GS Collections, open sourced by Goldman Sachs in 2012, continues to explore more examples from that powerful framework ...

Another approach to find duplicates in a Java list is to use the frequency method of the Collections class. This example prints out the number of times each unique element in the List occurs, which is ...