Write the following methods that return a lambda expression performing a specified action:PerformOperation isOdd(): The lambda expression must return true if a number is odd or false if it is even. PerformOperation isPrime(): The lambda expression must return true if a number is prime or false...
JSP is an integral part of Java EE. If you are giving an interview for a web developer, then having good knowledge of JSP is very important. This post contains a list of 35 JSP interview questions with answers. Please make sure to bookmark it because I will be kept on adding more to...
Yes, you can overload the main() method by defining multiple versions with different parameter lists. However, public static void main(String[] args) is the only method from which a program can start. Other overloaded methods will not be called automatically by the JVM at runtime. public cl...
Follow-up questionsIf the interview candidate comes up with one of the above solutions without mentioning any drawbacks, ask whether this approach is perfect.If using default interface methods, there is still a corner case where compilation might break: if the implementing class has a method with...
We can make the variable private or protected. Use public accessor methods such as set<property> and get<property>. So that the above code can be modified as:public class Addition(){private int a = 5; //Here the variable is marked as private}The...
An interface as it relates to Java is a blueprint of a class or a collection of abstract methods and static constants. Each method is public and abstract, but it does not contain any constructor. What are constructors in Java? In Java, a constructor refers to a block of code used to ...
When there are two methods of the same name and properties, one is in the child class and the other is in the parent class, overriding occurs. Top Java Interview Questions And Answers – Set 3 1) What is the default size of the load factor in the hashing-based collection?
Java Interview Questions Part 7 What are the functions of the JDBC Connection interface? TheConnection interfacemaintains a session with the database. It can be used for transaction management. It provides factory methods that return the instance of Statement, PreparedStatement, CallableStatement, and ...
Files class got two new methods to read/write string data – readString() and writeString(). We can use “var” withlambda expressionstoo. It’s part of JEP 323 implementation. Epsilon: A No-Op Garbage Collector for test environments. It’s an experimental feature and part of JEP 318. ...
9. Differentiate between the constructors and methods in Java? 10. What is final keyword in Java? “final” is a special keyword in Java that is used as a non-access modifier. A final variable can be used in different contexts such as: ...