Related Topics JAVA Programming Question 24 Can you explain the difference between Collection and Collections in Java? Answer There is a significant difference between Collection and Collections in Java. Collection is an interface in the Java Collections Framework that defines the basic methods for working with groups of objects. It is the root interface of […]
Related Topics JAVA Programming Question 18 Can you explain the difference between List and Set in Java? Answer List Set A List is an ordered collection of elements, which allows duplicates and null elements. A Set is an unordered collection of unique elements, which does not allow duplicates and can contain at most one
Related Topics JAVA Programming Question 13 What is a Deque in Java and what are its main features? Answer In Java, Deque stands for “double-ended queue”, and is an interface in the Collections framework that represents a sequence of elements that can be accessed and modified at both ends. The Deque interface extends the Queue
Related Topics JAVA Programming Question 7 Can you explain the difference between Stack and Queue in Java? Answer Both Stack and Queue are data structures in Java that allow you to store and retrieve elements, but they have some key differences. Ordering: Stack follows a last-in-first-out (LIFO) ordering, which means that the last element added
Related Topics JAVA Programming Question 1 What is the Collections framework in Java? Answer The Collections framework in Java is a set of classes and interfaces that provide a unified and standardized way of representing and manipulating groups of objects. It is part of the Java API (Application Programming Interface) and is included in the
Related Topics Python Programing Question 42 How does Python handle overflow with large integers and what is the maximum size of an integer in Python? Answer In Python, integers are dynamically sized, which means that the maximum size of an integer is only limited by the available memory on the system. This is in contrast
Related Topics JAVA Programming Question 34 Can you explain the use of java.lang.StringIndexOutOfBoundsException class in Java programming? Answer The java.lang.StringIndexOutOfBoundsException class in Java is a runtime exception that indicates that an index or a range of indices is out of bounds for a given String. It is a subclass of the IndexOutOfBoundsException class. This exception
Related Topics JAVA Programming Question 29 What is the difference between Error and Exception in java.lang package? Answer In Java, errors and exceptions are both subclasses of the Throwable class, but they have different purposes and are used in different scenarios. An Error is a subclass of Throwable that represents an unrecoverable condition that should
Related Topics JAVA Programming Question 23 What is the purpose of java.lang.Objects class in Java programming? Answer The java.lang.Objects class was introduced in Java 7 and provides utility methods for performing various object-related operations. Some of the main purposes of the class are: To provide null-safe operations for comparing, hashing, and retrieving the string representation
Related Topics JAVA Programming Question 16 How does the hashCode() method work in java.lang.Object class? Answer The hashCode() method in the java.lang.Object class returns a hash code value for the object on which it is invoked. This method returns an integer value that represents the object’s memory address in the JVM’s heap memory. The hashCode()
