Category: Java

This post will discuss how to find the index of an element in a List in Java.

This post will discuss how to get the last value of a List in Java.

This post will discuss different ways to initialize a List of Lists in Java.

This post will discuss how to join multiple lists in Java. The solution creates a new list containing all elements of the provided lists, in iteration order.

This post will discuss how to print elements of a List separated by a comma in Java.

This post will discuss how to identify duplicates in a List in Java.

This post will discuss how to flatten a List of Lists in Java.

This post will discuss how to find all occurrences of a value in a List in Java.

This post will discuss how to calculate differences between two lists x and y in Java. The solution should return all elements present in x that are not present in y.

This post will discuss how to find the common elements in two lists in Java.

This post will discuss how to add the contents of a Map to another Map in Java.

This post will discuss how to check whether a given key exists in a Map in Java. The solution should check if the map contains a mapping for a key k such that Objects.equals(key, k) holds for a given key key.