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In this article, we’ll look at how to retrieve and display the list of available catalogs (databases) in a MySQL instance using Java’s JDBC (Java Database Connectivity) API. By running a Java program that connects to the MySQL server, we’ll use the DatabaseMetaData class to fetch catalog names with the getCatalogs() method, showing each catalog’s name on the console. This process demonstrates how to access and navigate metadata in MySQL using JDBC, offering insight into the structure of your database environment. Steps to retrieve database catalogs The getCatalogs() method of the DatabaseMetaData interface returns the name of the underlying database ... Read More
In this article, we will understand how to print the left triangle star pattern using Java. The pattern is formed by using multiple for-loops and print statements. Problem Statement Write a Java program to print the left triangle star pattern. Below is a demonstration of the same − Input Enter the number of rows : 8 Output The right triangle star pattern : * * * ... Read More
In this article, we will learn to disable the first item on a JComboBox using Java. This setup is useful for applications where you want to show a placeholder as the first item and prevent it from being chosen, so users must select a valid option. We will be using JComboBox. JComboBox class The JComboBox class in Java is a useful component that combines a dropdown list with a button or a text field. This lets users pick an option from the list or type their input if editing is allowed. It’s great for creating forms where users can choose ... Read More
In this article, we will learn how to solve a problem where we are given an array of strings, and we need to make all strings equal by rotating them. This can be done by performing left rotations on the strings. We need to count the minimum number of operations required to do this. If it is impossible to make the strings equal, the output should be -1. Problem statement We have given an array containing n strings. All strings are permutations of each other. We need to count the total number of minimum operations required to make all strings ... Read More
In this article, we will learn how to print a sublist of an ArrayList in Java using the subList() method. The ArrayList class in Java provides a dynamic array for storing elements. The subList() method returns a portion of the list based on specified indices. Problem StatementGiven an ArrayList containing several elements, write a Java program to display a sub-list from the original list, starting from a specified index and ending at another specified index.Input [100, 200, 300, 400, 500, 600, 700, 800, 900, 1000]Output Sub-list from index 4 to 8:[500, 600, 700, 800] Steps to display a sub-list ... Read More
You can't go anywhere without hearing about another horrifying case of internet fraud, phishing, or corporate cybersecurity failure. The rise of cybercrime in recent years has shown strong security measures' importance. Everyone values their data privacy. These days, the internet is integral to just about every aspect of our lives. The role of cybersecurity architects cannot be overstated. This article will explain what a cybersecurity architect is, why you should consider becoming one, and how to get certified in cybersecurity in India. You must read more about this high-demand field. First, let's learn about the foundations of secure network design. ... Read More
In this article, we will learn how to deselect a range of columns in a JTable using Java. JTable is a part of the Swing framework in Java, which is used to display and edit tables. Sometimes, we may want to deselect a specific range of columns after selecting columns in a table. This can be done by using the removeColumnSelectionInterval() method. Problem Statement Given a JTable with columns selected, write a Java program to deselect a range of columns from the table. Input A JTable with columns selected.Output The specified range of columns will be deselected. Steps to ... Read More
With inflation, a hybrid working model, supply chain issues, and massive layoffs hitting the market, Project management is one area that has the capability to lead this ship of change, hence the demand for project managers. With the increasing complexity and scope of projects, especially in the digital age, having a skilled project manager is essential to ensure that projects are completed on time, within budget, and to the satisfaction of all stakeholders. Not everyone can foray into the field of project management. However, business analysts, often known as the critical bridge between the business and the development team, ... Read More
IT professionals who want to flourish in the IT field can become a cyber-security analysts. The responsibility of a cyber-security analyst is to protect the company’s network from any type of cyber-attack. Here the professionals need to research advanced IT trends and generate emergency strategies. Companies appoint cyber security professionals to implement necessary cyber security protection and advanced security controls. Aspirants who want to become cyber-security analyst, should understand the ways to become professionals in this field. Steps to become a cyber-security analyst Aspirants who want to become professionals as cyber security analysts need to understand the steps that ... Read More
The profession of organizing and generating visual material to express ideas and messages is known as graphic design. Graphic design can be seen everywhere in the digital era, from billboards to cereal boxes to smartphone apps. These designs may impact our perception and emotions by combining many components and ideas. Companies use graphic design to communicate with consumers. Products can be promoted and sold through design, convey messages, and develop brand identities. Despite some commercial purposes in graphic design, Graphic Designers combine art and business, so business goals are part of the creative process. Who are Graphic Designers? Graphic ... Read More