Java

Another implementation of the Set interface is LinkedHashSet. LinkedHashSet maintains the order of elements and helps to overcome the HashSet limitation. The following code demonstrates this: This code is quite similar to the one seen earlier, except that it uses a LinkedHashSet. The input List is passed as a parameter...

Table of Contents Introduction 1. Variables 2. Data Types Primitive Data Types Integer Data Types Decimal Data Types Character Data Types Boolean Data Types Reference Data Types Introduction Variables are names that are used to identify memory locations that store values. Each variable belongs to a particular data type. Data types determine...

There is an overloaded version of the Stream.toArray method which can be used to return a result array that is of the same data type as the input array. The following code demonstrates this: Firstly, the 'stream()' method is invoked on the input List which returns a Stream corresponding to...

The Set is also an interface in the 'Java Collection' framework. Unlike a List, a Set does not allow duplicates. Hence you can use a Set to eliminate the duplicates in a List. There are several ways in which you can use a Set to eliminate duplicates as...

A common scenario faced by programmers is to convert a Java List to an Array. A 'List' is part of the Collection Framework and is useful when the number of elements are unknown. An 'Array', on the other hand, is useful for fixed-size elements. However, in real-world programming, there are...

Java 8 has added the Stream API that helps to easily perform bulk operations on Collections. A new method called stream() has been added to all the collection interfaces that returns a Stream corresponding to the underlying collection. There is a toArray method available on the Stream interface that can...

The simplest way to remove duplicates from a 'List' is to use a for-loop. The following code snippet demonstrates this method. First, the code creates a new ArrayList to store the output, i.e. a List without duplicates. A for-loop is then used which iterates through the input List. It first...

The simplest way to convert a List to an array is to use a for-loop. The following code snippet demonstrates this method. First, the code creates an Array based on the number of elements in the input List. A for-loop is then used which iterates through the input List and...