
Explore frequently asked Java interview questions and identify the topics to focus on for effective preparation while brushing up your Java skills.
Explore how string immutability and the string pool determine object creation, compare string versus new string, and contrast string buffer with string builder for performance and thread safety.
Explore object class in Java, compare equals and the == operator, and learn hashCode, toString, clone, and finalize, including reflexive, symmetric, transitive, and consistent rules with getClass versus instance of.
Learn how to serialize Java objects by implementing Serializable, manage serialVersionUID, and use object streams, while noting static and transient fields and comparing Serializable with Externalizable.
Explore the Java exception hierarchy, differences between checked and unchecked runtime exceptions, and the distinction from errors. Learn handling with try-catch-finally and using try-with-resources for automatic closing.
Explore generics in Java, apply type restrictions to collections to enforce string-only lists, and leverage compile-time checks to prevent runtime ClassCastException while using generic classes and understand type erasure.
This course is a compilation of more than 250+ Java interview question. With this course you can brush up your skills from very basic level to advanced level. Most of the topics have been discussed with coding examples to give a better understanding. In this course I have covered wide range of topics . The best part about this course is you can go through this course in a very sort span of time .
Topics covered in this course:
1 ) Basic question on JVM , JDK and JRE
2 ) Java Main Method
3 ) String, String Buffer and String Builder
4 ) Wrapper classes : Advantages over primitive types , different ways to create them, hands on examples
5 ) Common methods of Object Class
6 ) General Programming Concepts : Interface, access modifiers, abstract class, static method, static variables, static blocks, inner class etc.
7 ) Marker Interface : Random Access , Cloneable , Serializable
9 ) Cloning : deep clone and shallow clone with examples
10 ) Serialization and deserialization with examples.
11 ) Exceptions : exception hierarchy, checked exception and unchecked exceptions
12 ) Collections: collection hierarchy, different collection classes, HashMap, Comparable and Comparator, concurrent collections, Generics
13 )Threads
14 ) Executor framework
15 ) Java 8 : Functional programming , functional interface , lambda expressions with examples , Optional with examples .
Hope this course will be helpful to you , so kindly enroll and get started.
Happy learning!!!!