java 16 interview questions and answers

A class does not inherit constructors from any of its superclasses. In Java, a subclass does not inherit constructors from its superclass in the same way it inherits other members (methods and fields). However, constructors are not inherited explicitly, but they are invoked implicitly when an object of the subclass is created. Here’s what happens: … Read more

The Map interface replaces the JDK 1.1 Dictionary class and is used associate keys with values. In Core Java, the Map interface is a part of the Java Collections Framework and is used to represent a collection of key-value pairs where each key is associated with exactly one value. It is designed to model the mathematical function abstraction and … Read more

The SimpleTimeZone class provides support for a Gregorian calendar. The SimpleTimeZone class in Java is a part of the java.util package and is used to represent a time zone for a specific region. It extends the abstract class TimeZone and provides a simple implementation of a time zone with a constant offset from GMT (Greenwich Mean Time). … Read more

A class that is declared without any access modifiers is said to have package access. This means that the class can only be accessed by other classes and interfaces that are defined within the same package. If a class in Java is declared without any access modifiers, it will have package-private (also known as default) … Read more

A catch clause can catch any exception that may be assigned to the Throwable type. This includes the Error and Exception types. In Core Java, catch clauses are used to handle exceptions. There are three types of exceptions in Java, and a catch clause can catch and handle exceptions of these types: Checked Exceptions (or … Read more