5.B] What are the different character extraction methods? Explain with a program. Answer: Java provides several methods to extract characters or sequences of characters from a String object. These methods are useful for retrieving specific characters, substrings, or sequences from…
5.A] Explain different types of String Constructors with examples. Answer:- Java provides several constructors to create String objects. Each constructor serves a specific purpose and allows the creation of strings in different ways. 1. Default Constructor 2. String Literal Constructor…
4.B] Write a note on:i) Bounded Wildcardsii) Erasure Answer: i) Bounded Wildcards Bounded Wildcards in Java generics are a way to restrict the types that can be passed as arguments to a generic method or class. They allow you to…
4.A] Write a program using a Generic Interface. Answer: Output:
How Generics Improve Type Safety Answer: Generics in Java enhance type safety by enabling you to specify and enforce the type of objects that can be used with classes, interfaces, and methods. This helps catch type-related errors at compile time,…
3.A] What are Generics? Provide an example program. Answer: Generics in Java are a feature that allows you to define classes, interfaces, and methods with type parameters. This means you can create components that operate on objects of various types…
Reflection is a powerful feature in Java that allows a program to inspect and modify the structure and behavior of classes, interfaces, fields, and methods at runtime. When it comes to annotations, reflection can be used to obtain and manipulate…
2.A] Explain single-member annotations with a program example. Answer: A single-member annotation is a special type of annotation that has only one element (also known as a member or attribute). In such annotations, you don’t need to specify the name…
1.B] Explain with examples:i) Autoboxing and Unboxingii) Type Wrapper Answer: i) Autoboxing and Unboxing Autoboxing is the automatic conversion that the Java compiler makes between the primitive data types (e.g., int, char, boolean, etc.) and their corresponding object wrapper classes…
1.A] What is an Enum? Write a program that displays enumeration constants using the values() and valueOf() methods. Answer: What is an Enum? An Enum (short for Enumeration) in Java is a special data type that enables for a variable…
