Database Metadata in Java (JDBC) DatabaseMetaData is an interface in Java’s JDBC API that provides information about the database, such as its structure, features, tables, and supported capabilities. It is used when you want to discover properties of the database…
Program: Simple Swing Application ✅ Explanation: Output Behavior:
1. JFileChooser What it is: JFileChooser is a Swing component that displays a dialog box for the user to select files or directories from the file system. Features: Common Methods: Example: 2. ImageIcon What it is: ImageIcon is a Swing…
Two Key Features of Swing in Java Swing is a GUI toolkit in Java used to build rich desktop applications. It is part of the javax.swing package and is built on top of the Abstract Window Toolkit (AWT). Here are…
MVC (Model-View-Controller) Architecture in Java MVC stands for Model-View-Controller. It is a design pattern used for developing user interfaces that separates an application into three interconnected components: 1. Model Example: A Student class with fields like name, id, and methods…
Explain the four types of swing buttons with demonstration program Answer:- Types of Swing Buttons All are part of the javax.swing package. Java Swing Program Demonstrating All Four Buttons How it works:
Storing User-Defined Classes in Collections (with Example) In Java, you can store objects of user-defined classes in collections like ArrayList, HashSet, TreeSet, etc. To do this effectively, especially for searching, sorting, or uniqueness, the class should override toString(), equals(), and…
Recent Changes in Java Collection Framework (Java 8 to Java 21) The Java Collection Framework has undergone several improvements in recent versions (Java 8 onward) to enhance performance, usability, and convenience. Here’s a summary of major updates: 1. Java 8…
Explain how collections can be accessed using an iterator with an example. Accessing Collections Using an Iterator in Java In Java, an Iterator is an object that allows you to traverse (loop through) elements of a collection one at a…
What are Legacy Classes in Java? Legacy classes are classes that were part of Java before the Collection Framework was introduced in Java 1.2. These classes were later adapted to work with the Collection Framework using adapter classes or by…
