Java only returns one value from a method, but sometimes we’d like it to return more than one values, in this article, let’s take a look at some tricks to achieve this.

In this article, we’ll introduce various ways of creating List with initial values, at the time of its construction.

We’ll first introduce how to do it with Java built-in methods. Then we’ll also share how to do it with Google Guava.

There are three cases when we are talking about this topic.

Case 1: two lists are strictly equal, they have the same size, the elements in the lists have same order, and all corresponding pairs of elements in the two lists are equal;

Case 2: two lists containing the same elements, they have the same size, and there are duplicate elements within the lists. However, the number of counts each element appears in the two lists must be the same.

Case 3: two lists containing the same elements, regardless of element orders or whether the elements have the same duplication counts.

This post will introduce various ways to create a Java List using Google Guava library.

Java 8 Stream.flatMap() method is used to flatten stream of collections to a stream of objects. In short, we can say that it allows us to combine the objects from multiple collections into a single collection.

In this article, let’s check how we can group elements in a given List to a Java Map.

In this article, we’ll introduce the method to find the common elements between two lists in Java.

There are three ways to receive list or array of objects via @RequestBody annotation.

In this article, we’ll introduce the method to find the differences between two lists in Java. There are a few different approaches, let’s go through them one by one.

In this article, let’s check how we can convert a given List to a Java Map.