addFirst method adds the elements at the beginning of the list, whereas the addLast method adds the elements at the end. In this post, we will learn about both methods in detail. public void addFirst(E e) What does it do? As the name suggests, it will insert the element at the beginning of the linked […]
Linked List – addFirst and addLast methods in Java Read More »
In this post, we will be looking at the addAll() method of the Linked List class in Java. addAll() method is used to add the elements of a Collection into the linked list. There are two overloaded implementations of the addAll methods, which are listed below – public boolean addAll(Collection c) public boolean addAll(int index,
Linked List – addAll method in Java Read More »
add() method is used to add an element within the Linked List. In this post, we will discuss the add method of the java Linked List class. There are two add overloaded add method implementations in Linked List, which are listed below – public boolean add(E e) public void add(int index, E element) public boolean
Linked List – add method in Java Read More »
In the previous post, we learned how to make our own custom Linked list, and in this post, we will be learning about the inbuilt linked list class in Java, which is a part of the Java Collection framework. This Linked list class is present in java.util package. First, let’s learn about what is a
LinkedList in Java with Examples Read More »
Linked lists are a fundamental data structure used in computer science, and Java provides its own linked list implementation. However, there may be times when you want to create your own custom linked list. Implementing a custom generic linked list in Java can be a valuable learning experience and provide greater flexibility, performance, and an
Implementing a Custom Generic Linked List in Java Read More »
As you already know that Java provides us with its own LinkedList class and its various helper methods but what if you want to implement your own linked list class? With your own custom methods? Let’s see how you can achieve that. Let’s create a C, C++ type linked list, and we know that in
How to implement your own Linked List In Java w.r.t competitive coding Read More »
Earlier, we discussed how to connect with a remote server using Java, and this post will cover the points on how to execute commands on that remote server. We may have to execute single or multiple commands depending on the situation. We must remember that we don’t make an ssh connection again for each command
Execute commands on the remote server using Jsch in java Read More »
It is often required to filter records in the table based on some condition/s. To filter records using these conditions SQL WHERE clause is used. WHERE clause can be used in SELECT, UPDATE, DELETE, etc. statement. In this article, we will learn how to use the SQL WHERE clause in the SELECT statement. SQL WHERE
SQL DISTINCT keyword is used to retrieve unique ( distinct ) values from the table. If there are duplicate values present for a particular column, then SQL “distinct” keyword can be used to select only the distinct values. SQL DISTINCT Syntax where column1, column2, columnN are the column names of the table. In this post,
SQL DISTINCT keyword Read More »
SQL Select statement is used to retrieve data from the database. The data is returned in form of a table called a resultset. SQL SELECT Syntax In SQL select statement, we specify list of columns to be fetched from database tables. To select specific columns from table: column1, column2, columnN are the column names of
SQL SELECT statement Read More »