Archives from the Category Frameworks - 1

Archived Articles from the Category Frameworks

• How does Constructor Injection work? Impl of CI using Pico
  
• Spring: Beans, Container, Config Metadata, IoC Instantiation
  
• Spring IoC: Inversion of Control. DI: Dependency Injection.
• AspectJ, Aspect Oriented Programming (AOP), Spring AOP

Archives from the Category Tips/Hacks - 1

Archived Articles from the Category - Tips/Hacks

• Creating documents straight out of your emails in GMail using Labs
  
• Free 2/3 - Col XML Templates. How to apply a new Skin in Blogger?
• Inserting Google AdSense Ad code in Body, Sidebar, etc. in Blogger?

Archives from the Category Java - 10

Archived Articles from the Category Java

• Why String has been made immutable in Java? How it helps?
  
• Memory Leak in Java? Does static cause memory leaks in Java?
  
• Marker Interfaces in Java: what, why, uses, how to define?
  
• Why wait, notify, and notifyAll have been defined in Object?
  
• per-thread Singleton and per-thread DEBUG logging in Java
  
• Choosing the most specific method in Java - Tricky Overloading
  
• Initializer Blocks and their possible alternatives in Java
  
• Static Initialization Blocks - their usage and alternatives in Java
  
• How to choose a suitable access control modifier in Java?
  
• Finding caller object, method, class of an instance method in Java
  
• Can we pass new-line escape seq ('\n') via command line in Java?
  
• Tricky use of static initializer in Java - Overriding 'println' method
  
• How to find if a number is a power of 2 or not in Java using bits?
  
• Binary representation of negative numbers in Java - 2's comp
  
• Evolution of Java and XML combo. SAX, DOM, JAXP, & JDOM
  
• Getting the class name from within a static method in Java
• Fixing java.lang.UnsupportedClassVersionError in Java
  
• finally contd.: another interesting try-catch-finally scenario
  
• Implementing session of a Web App served by multiple servers
  
• Ease of Development using new features of Java 5.0 (J2SE 5.0)
  
• Programming Scenarios for finally in Java and their execution
  
• Image Processing using Java APIs. Dim, Regions, Thumbnails, etc.
  
• CGI, Servlets, JSP, JSP Model 1 & JSP Model 2 Architecture
• Pagination Implementation in a JSP? What are the challenges?
• Structural Patterns contd. - Bridge, Facade, Flyweight, & Proxy
• Structural Design Patterns - Adapter, Decorator, & Composite
• How to create ZIP or JAR files programmatically in Java?
• What are the differences between Swing and AWT in Java?
• Creational Design Patterns contd. - Builder & Prototype Patterns
• Creational Design Patterns - Singleton, Factory, & Abstract Fac
• Design Patterns - Types, Numbers, & their suggested Precepts

<< Older Articles

Archives from the Category Java - 9

Archived Articles from the Category Java

• Can we have diff instances of java.lang.Class for the same Type?
• Building Reg Ex to identify Strings rep Numbers - an explanation!
• Java code using Reg Ex to identify Strings representing int/float
• zip vs jar. When to use what? Which one is performant?
• What are the various possible ways of creating objects in Java?
• Can we access an unreachable object in Java? What's Finalization?
• Security Model in Java and it's evolution since Java 1.0
• Guarded Blocks in Java - what are they & why are they used?
• Deadlock - what's it? How to deal with this situation?
• Ways of implementing Variable Argument Lists in Java
• Facts about IEEE 754 floating-point arithmetic in Java
• Composition vs Aggregation. What's Association in UML?
• Java Architecture, JVM, JRE, Java Platform, & JDK
• Loading, Linking, & Initialization of a Type - Class/Interface

<<Older Articles ------- Newer Articles >>

Archives from the Category Java - 8

Archived Articles from the Category Java

• Synchronization of static methods/fields in Java
• Why synchronization of constructors is not allowed?
• What is Reentrant Synchronization in Java?
• Thread.State in Java? BLOCKED vs WAITING/TIMED_WAITING
• Alternatives of stop, suspend, resume of a Thread in Java
• Why stop, suspend, resume of a Thread are deprecated?
• Conditional Compilation & Conditional Initialization/loading
• Assertions in Java? Assertions vs Exception, Usage, etc.
• Do Interfaces really inherit the Object class in Java?
• Error/Exception Handling in JSP - using JSPs and Servlets for errors
• Field Hiding in Java - fields are only hidden not overridden in Java
• How to automate user input events for GUI programs in Java?
• How can you detect the shutdown of JVM programmatically?
• Common questions and their answers on Shutdown Hooks
• Overruling uncaught checked/unchecked exceptions in Java

<<Older Atricles ------- Newer Articles>>

Archives from the Category Java - 7

Archived Articles from the Category Java

• finally in Java - explained with common ques, uses, etc.
• Differences between forward and sendRedirect
• Dynamic Binding vs Static Binding in Java - What's the Difference?
• Differences between include action and include directive in JSP
• What are Implicit Objects in JSP? What are they used for?
• JSP Comment vs HTML Comment - What's the Difference?
• What's Scope of JSP Objects? How many types of Scopes?
• Thread Problem - Assigning null to an active thread object
• Runtime.exit() vs Runtime.halt() - what is the difference?
• How does a JVM Shutdown? What is the JVM Shutdown Sequence?
• Shutdown Hooks in Java - What are they & How do we use them?
• What's JSP? Explain the Life Cycle of JSP (JavaServer Pages)
• How can we have modular response-writers for Servlets?
• Can we have constructors in Servlets?
• Calling include() before forward() throws IllegalStateException - why?

<<Older Articles ------- Newer Articles>>

Archives from the Category Java - 6

Archived Articles from the Category Java

• What is Servlet Mapping? What is Servlet Invoker?
• Why and when do we get IllegalStateException in Servlets?
• What happens if destroy() is called from init() of a servlet?
• Servlet Preinitialization and Servlet Lazy Initialization in Java
• Difference between ServletContext & ServletConfig interfaces
• Why Java needs Inner Classes?
• Local Inner Classes & Anonymous Inner Classes
• Why do we use Nested Classes in Java?
• Nested Classes in Java & Inner Classes in Java?
• Annotations vs Documentation Comments in Java
• What are Annotations in Java? What are they used for?
• What's the potential problem with overriding clone() method?
• clone() not accessible from outside on a Cloneable instance - why?
• Difference between Shallow Copy and Deep Copy
• Deep Copy Implementation in Java - Source Code

<<Older Articles ------- Newer Articles>>

Archives from the Category Multithreading - 2

Archived Articles from the Category Multithreading

• Why wait, notify, notifyAll in Object class and not in Thread class?
  
• Usage of ThreadLocal: per-thread Singleton and per-thread logging
  
• ThreadLocal & InheritedThreadLocal in Java and their uses
  
• Guarded Blocks in Java - what are they & why are they used?
• Deadlock - what's it? How to deal with such a situation?
• Concurrent execution of static and non-static methods in Java
• Synchronization of static and non-static (instance) methods in Java
• Why synchronization of constructors is not allowed in Java?
• What's Reentrant Synchronization in Java?
• What's Thread.State? BLOCKEDvs WAITING/TIMED_WAITING
• Alternatives of stop, suspend, resume of a Thread in Java
• Why stop, suspend, resume of a Thread is deprecated?
• Thread Problem - assigning null to an active thread

<<Older Articles ------- Newer Articles>>

Archives from the Category C/C++ - 2

Archived Articles from the Category C/C++

• Recursion, it's adv/limitations, factorial impl, ackemann's fun

<<Older Articles ------- Newer Articles>>

Archives from the Category Trivia - 2

Archived Articles from the Category Trivia

<<Older Articles ------- Newer Articles>gt;

Archives from the Category Java - 5

Archived Articles from the Category Java

• What's JarIndex mechanism? What's it used for?
• Object.clone() throwing exception for Object instance - why?
• What's Cloning? How does clone() work in Java?
• How can you implement a Web-based File Uploader?
• What are Reverse Proxies? What are they used for?
• What are Virtual Hosts? What are they used for?
• https becoming http for the sendRedirect method at Web Server - why?
• Web Server, Web Container, and Application Server - how they differ?
• Diff between getRequestDispatcher of ServletRequest and ServletContext
• JAR, WAR, and EAR - what are these file formats used for?
• What's a Web Server? How does a Web/HTTP Server work?
• Discuss the life cycle of a Servlet - init(), service(), destroy()
• What's HTTP? Explain HTTP Requests and HTTP Responses
• Session Tracking implementation for Servlets - how to do it?
• Session Tracking - why needed & how many ways to do it?

<<Older Articles ------- Newer Articles>>

Archives from the Category Java - 4

Archived Articles from the Category Java

• What does load-on-startup element mean in web.xml?
• Physical DB Connection vs Logical DB Connection
• What's Connection Pooling? Why do we need it?
• Difference between GET and POST methods
• Security Risk with Externalizable and its inapplicability
• Difference between Externalizable and Serializable interfaces
• Can you override the Static Methods in Java?
• GenericServlet, ServletConfig, ServletContext, and HTTPServlet
• What are Classloaders in Java? How do they work?
• Classloading for Web Apps or EJBs on an Apps Server
• Make a Class available to all apps on an Apps Server
• Explain the JDBC Architecture - 2 tier and 3 tier both
• Role of JDBC in Java. What're JDBC Components?
• Why Prepared Statements are faster? Are they compiled?
• What's the role of the Future interface in Java?

<<Older Articles ------- Newer Articles>>

Archives from the Category Oracle - 1

Archived Articles from the Category Oracle

• Role of MERGE command? What's Upsert Functionality?
• DDL, DML, DCL, and TCL - what are they used for?
• SQL Query to find the lowest/top N records based on a column
• Difference between RANK() and DENSE_RANK() functions
• Difference between VARCHAR and VARCHAR2
• SQL Query to find every Nth row from a table
• SQL Query to remove duplicate records from a table
• Difference between DELETE, DROP, and TRUNCATE
• What is a Database Transaction?
• What's a relational DB? What are Integrity Rules?
• Difference between Server-side and Client-side DB Cursor
• Oracle Database - How to tune it for better performance?
• All types of Database Files used in Oracle Database
• Library Cache vs Data Dictionary Cache in Oracle DB
• SGA Memory Structure of the Oracle Database
• Oracle Server Architecture - Primary Components

Newer Articles >>

Archived Articles at Geek Explains

Archived Articles at Geek Explains Category->Date wise

Two types of Archives are available at Geek Explains - One, Date-wise listing of all the articles by title which you can find under the Archives section. Two, Category-Date-wise listing of all the articles by title. This page is for this second type of Archives at Geek Explains.

Find below the links, which will take you to the list of archived articles by title. The articles have been clubbed Category-wise and one page shows only 15 archived articles of the Category. For categories having more than 15 articles, the pages will have links as 'Older Articles' and 'Newer Articles', which will take you to the previous/next page of archived articles under that Category.

• Archives from the Category Java
• Archives from the Category JVM
• Archives from the Category Frameworks
  
• Archives from the Category Oracle
• Archives from the Category HR Questions
• Archives from the Category Puzzles
• Archives from the Category Data Structures
• Archives from the Category Algorithms
• Archives from the Category Adobe Interview
• Archives from the Category Multithreading
• Archives from the Category SOA
• Archives from the Category C/C++
• Archives from the Category OS
• Archives from the Category Trivia
• Archives from the Category Miscellaneaous

Archives from the Category Puzzles - 1

Archived Articles from the Category Puzzles

• Puzzle: Circular Table, Pile of Quarters, 2 Players - Winning Strategy
  
• Puzzle: 2 crystal balls, 100 storey building ... how many drops req?
• Puzzle: Deck of 52 Cards, 2 Players, some rules, ... who wins?
• Puzzle: Knowing avg salary without disclosing individual salaries
• Puzzle: What's the number of trailing zeroes in 100!
• Puzzle: Probability of sitting on one's own seat?
• Puzzle: 13 Red, 15 Green, and 17 Blue Chameleons
• Puzzle: How many hens for 6 eggs in 6 days?
• Puzzle: 15 pirates, 100 Gold Coins - How to distribute it?
• Puzzle: What's the Probability of seeing a car in 5 minutes?
• Train, Tunnel, and Man. How faster is the train running?
• Rope Bridge, Torch, Four People - Puzzle
• What is the age of the oldest child who plays piano?
• 3 litres and 5 litres containers puzzle

Archives from the Category Algorithms - 1

Archived Articles from the Category Algorithms

• Finding if a number is a power of 2 or not using bit-manipulation?
  
• Adobe - Reverse the order of words in a given character sequence
• Adobe Interview - Algorithm of Reversing a String
• Algorithm of Adding a new node to a Linked List at head/tail
• Algorithm of Copying a Linked List
• Finding the Second Highest element of an Integer Array. Algo & Code.

Archives from the Category Adobe Interview - 1

Archived Articles from the Category Adobe Interview

• Adobe Interview - Larger of two int without using Relation or Logical ops
• Adobe Interview - Algorithm of Reversing a String

Archives from the Category C/C++ - 1

Archived Articles from the Category C/C++

• What's the concept of Sequence Point in C?
• What are the ways of handling complex declarations in C?
• What does the expression 'a ^= b ^= a ^= b' do in C? Any Problems?
• Do the parentheses always enforce desired order of evaluation in C?
• What is the concept of Short Circuit operators in C?
• Potential problem involving overflow/truncation in C
• Why does sizeof() return strange values for a struct in C?
• Improper Declaration causing Core Dump in C
• Incrementing a pointer doesn't work after casting in C. Why?
• Why doesn't the statement 'a[i] = i++' work in C?
• Adobe Interview - C code for allocating a 2D (or 3D) array
• Adobe Interview - Larger of the two int wothout using Relation or Logical ops
• Adobe Interview - Write a C function to Reverse a String
• Differences between C++ and Java. Strengths, Usage Scenarios, etc.

Archives from the Category Multithreading - 1

Archived Articles from the Category Multithreading

• Role of the Future interface in Java
• start() method vs run() method in Java
• Threads and Daemon Threads in Java
• Callable interface vs Runnable interface in Java
• How does a Thread supports its own interruption in Java?
• What are the ways of creating Threads in Java? Which way to use when?
• Differences between Processes and Thread
• Differences between notify() and notifyAll() methods in Java
• Differences between sleep() and wait() methods in Java
• Synchronized blocks vs Synchronized method in Java

Newer Article >>

Archives from the Category Miscellaneous - 1

Archived Articles from the Category Miscellaneous

• Connecting to an HTTP Web Service from VBA Excel via Proxy
  
• Is there a way to pass a escape seq via command line in Java?
  
• Computation of 2's Complement and 1's Complement of a number
  
• Viewing/Editing PPT, TIFF, PDF, etc, directly in the browser
  
• SAX v/s DOM. Diff between SAX and DOM. When to use what?
  
• Evolution of Java-XML combo. SAX, DOM, JAXP, & JDOM
  
• Recovering Shift+Deleted emails/folders in MS Outlook
  
• Differences betwen Outlook Express & Microsoft Outlook?
  
• Resolving 'LoadLibrary failed - a DLL initialization routine failed'
  
• The 25 Most Dangerous Programming Errors listed by CWE/SANS
  
• XML Schema (XSD): definition, anatomy, advantages & applications.
  
• How do www, www1, www2, etc. differ? Role of DNS & CNAME?
  
• How does Password Encryption work in a real world scenario?
  
• Spring IoC: Inversion of Control. DI: Dependency Injection.
• AspectJ, Aspect Oriented Programming (AOP), Spring AOP
  
• Creating XML Doc from XSD. Creating XSL and applying on XML
  
• Image Processing using Java APIs. Dimensions, Regions, etc.
  
• MVC Pattern & its importance. Push & Pull Mech
• Creating Windows NT services for Java applications
• Web Vulnerability Detection: SQL Injection, XSS, GHDB
• What is XML and how is it different from HTML?
• ORM: Object Relational Mapping. JDO, Hibernate, SDO, etc.
• XML Databases: NXD, XAPI, Apache XIndice, Ozone DB, Sedna
  
• Evolution of Agile Methodology. Engineering vs Agile.
  
• SQL Injection - what's it and how can it be handled?
• How to generate unique primary key automatically in MySQL?
• Enterprise Service Bus (ESB) - What and Why?