Q1. What are the non-final methods in Java Object class, which are meant primarily for extension? A1. The non-final methods are equals( ), hashCode( ), toString( ), clone( ), and finalize( ). These methods are meant to be overridden. … Read more ›...
Q1. What is a JMX? What are the key components of JMX? A1. JMX stands for Java Management Extensions (JMX), which is a technology to monitor and manage any Java applications are running in either a local or a remote Java Virtual Machine (JVM). … Read more ›...
If you are going to work on Swing based applications…. Q1. What are the differences between AWT and Swing? A1.Swing provides a richer set of components than AWT. They are 100% Java-based. There are a few other advantages to Swing over AWT: Swing provides both additional components like JTable, …...
Q1. What are the key considerations in processing large files?
A1. Before jumping into coding, get the requirements.
#1 Trade-offs among CPU, Memory Usage & Disk I/O
Processing a file involves reading from the disk, processing (e.g. parsing an XML and transforming), and writing back to the disk.
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Q1. What is an LDAP server? And what is it used for in an enterprise environment? A1. LDAP stands for Lightweight Directory Access Protocol. This is an extensible open network protocol standard that provides access to distributed directory services. … Read more ›...
Java modifiers like final, finally, const, volatile, and transient are very popular with the job interviewers. You will see why because of the possible drill down questions. Q1. What is the difference between ‘final‘ and ‘const‘ modifiers on a variable? … Read more ›...
Q1. Are annotations a compile time or run-time feature? A1. You can have either compile-time or run-time annotations. @Override is a simple compile-time annotation to catch little mistakes like typing tostring( ) instead of toString( ) in a subclass. … Read more ›...
Best Practice: “Classes should be immutable unless there’s a very good reason to make them mutable….If a class cannot be made immutable, limit its mutability as much as possible.” — by Joshua Bloch Q1. What is an immutable object? Q2. Immutable objects are objects whose state (the object’s data) cannot...
This is JEE from a 10,000 feet before diving into details of each technology.
Q1. When a company requires Java EE experience, what are they really asking for?
A1. Java EE (i.e. Enterprise Edition) is a collection of specifications for developing and deploying enterprise applications.
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Q1. What is a JPA? What are its key components? A1. The process of mapping Java objects to database tables and vice versa is called “Object-relational mapping” (ORM). The Java Persistence API provides Java developers with an object/relational mapping (ORM) facility for managing relational data in Java applications. … Read...
Java Garbage Collection interview questions & answers to ascertain your depth of Java knowledge in building industry strength Java applications. Determining optimal Garbage Collection (GC) settings is critical to achieve high throughput & low latency.
Q1. In which part of memory does Java Garbage Collection (i.e.
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Q1. What is JNDI? And what are the typical uses within a JEE application? A1. JNDI stands for Java Naming and Directory Interface. It provides a generic interface to LDAP (Lightweight Directory Access Protocol) and other directory services like NDS (Novell Directory Service), … Read more ›...
Q1. What do you understand by client side and server side view technologies? A1. There are client side & server side view technologies available. Server side view technologies In server-side view technology the most of the page rendering happens on the server side. … Read more ›...
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