Verifying Backend calls from andriod

http://android-developers.blogspot.com/2013/01/verifying-back-end-calls-from-android.html

Scalable Architecture for Rest API

https://blog.apigee.com/detail/scaling_apis_predict_prepare_for_overcome_challenges

https://blog.apigee.com/detail/huge_running_an_api_at_scale

https://blog.apigee.com/detail/cache_large_chunks_in_the_api_response

https://blog.apigee.com/detail/in_the_cloud_scale_means_concurrency

https://blog.apigee.com/detail/cloud_security_tech_talk_series_security_and_scalability

http://www.restapitutorial.com/lessons/whatisrest.html

http://www.ibm.com/developerworks/library/wa-aj-multitier/

designing a high-scalability, high-availability site

 

We find that Restlet does scale very well with the right system architecture.

Generally speaking you want to:

• Run a cluster of web server machines, not just one.
• Make sure your application is shared nothing, ie, no application state stored in your web servers, if at all possible.
• Use a load balancer to spread requests to the least loaded web servers.
• Make sure your JSON responses are cacheable.
• Add an HTTP reverse proxy cache (eg, Squid) at the border of your site. As the caches between your site and your clients warm up, most of the inbound traffic will be handled by them, and not your web servers.
• Write your client code to retry requests that fail. This way if a web server dies the next request will be load balanced to a surviving machine.
• And of course you want to automate your site to bring up crashed web servers, etc. (This is the part that is perhaps better asked on ServerFault.com.)

REST is an architectural style that is ideal for this type of setup.

As @matt mentions you do need to watch out for raw performance, but generally your first concern should be to get the scalable, high availability architecture in place.

Some good sources on this are:

• Building Scalable Websites, Cal Henderson.
• Scalable Internet Architectures, Theo Schlossnagle.
• Restful Web Services, Len Richardson and Sam Ruby.

and especially:

• highscalability.com, Todd Hoff.

Overstock.com runs a highly scaled web site and makes heavy use of Restlet to do it.

https://engineering.linkedin.com/architecture/restli-restful-service-architecture-scale


http://www.udidahan.com/2008/12/29/building-super-scalable-web-systems-with-rest/

 

Failed to execute goal maven-compiler-plugin:2.5.1:compile (default-compile) javac: invalid target release: 1.7

http://dhruba.name/2008/12/22/compiling-java-16-projects-using-maven-on-mac-os-x/

The reason is that the following environment variable isn’t set by default.

export JAVA_HOME="/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home"

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project rcfw-orm: Compilation failure
[ERROR] Failure executing javac, but could not parse the error:
[ERROR] javac: invalid target release: 1.7
[ERROR] Usage: javac <options> <source files>
[ERROR] use -help for a list of possible options
[ERROR] -> [Help 1]

Tech Blogs for Reading

Single Url : http://www.one-tab.com/page/B_-C5fVyTMu2u2WEIZSdAQ

http://sumit-techblog.blogspot.com/2014/10/java-architect-interview-preparation.html | Technical Blog: Java Architect Interview Preparation
http://www.javacodegeeks.com/2014/07/integrate-apps-with-neo4j-using-zapier.html | Integrate apps with Neo4j using Zapier | Java Code Geeks
http://www.javacodegeeks.com/2014/07/jaxb-a-newcomers-perspective-part-1.html | JAXB – A Newcomer’s Perspective, Part 1 | Java Code Geeks
http://www.javacodegeeks.com/2014/07/how-to-instantly-improve-your-java-logging-with-7-logback-tweaks.html | How to Instantly Improve Your Java Logging With 7 Logback Tweaks | Java Code Geeks
http://www.javacodegeeks.com/2014/07/sonarqube-as-an-education-platform.html | SonarQube As An Education Platform | Java Code Geeks
http://www.javacodegeeks.com/2014/07/use-cases-for-elasticsearch-flexible-query-cache.html | Use Cases for Elasticsearch: Flexible Query Cache | Java Code Geeks
http://www.javacodegeeks.com/2014/07/template-method-pattern-example-using-java-generics.html | Template Method Pattern Example Using Java Generics | Java Code Geeks
http://www.javacodegeeks.com/2014/07/how-to-compose-html-emails-in-java-with-spring-and-velocity.html | How to compose html emails in Java with Spring and Velocity | Java Code Geeks
http://www.javacodegeeks.com/2014/07/java-ee-7-with-angular-js-part-1.html | Java EE 7 with Angular JS – Part 1 | Java Code Geeks
http://www.javacodegeeks.com/2014/07/a-beginners-guide-to-jpahibernate-entity-state-transitions.html | A beginner’s guide to JPA/Hibernate entity state transitions | Java Code Geeks
http://www.javacodegeeks.com/2014/08/avoiding-null-checks-in-java.html | Avoiding Null Checks In Java | Java Code Geeks
http://www.javacodegeeks.com/2014/08/my-exprience-using-elasticsearch-nodejs-and-expressjs.html | My Exprience using ElasticSearch NodeJS and ExpressJS | Java Code Geeks
http://www.javacodegeeks.com/2014/08/tutorial-rest-api-design-and-implementation-in-java-with-jersey-and-spring.html | Tutorial – REST API design and implementation in Java with Jersey and Spring | Java Code Geeks
http://www.javacodegeeks.com/2014/08/deploying-a-spring-boot-application-to-cloud-foundry-with-spring-cloud.html | Deploying a Spring boot application to Cloud Foundry with Spring-Cloud | Java Code Geeks
http://www.javacodegeeks.com/2014/08/hibernate-statistics-with-hawtio-and-jolokia.html | Hibernate Statistics with Hawtio and Jolokia | Java Code Geeks
http://www.javacodegeeks.com/2014/08/getting-a-list-of-available-cryptographic-algorithms.html | Getting A List of Available Cryptographic Algorithms | Java Code Geeks
http://www.javacodegeeks.com/2014/08/but-im-negotiable.html | But I’m negotiable | Java Code Geeks
http://www.javacodegeeks.com/2014/08/decorator-design-pattern-applied.html | Decorator Design Pattern Applied | Java Code Geeks
http://www.javacodegeeks.com/2014/08/hawtio-on-jboss-eap-part-ii.html | HawtIO on JBoss EAP (Part II) | Java Code Geeks
http://www.javacodegeeks.com/2014/08/java-ee-asynchronous-constructs-and-capabilities.html | Java EE: Asynchronous constructs and capabilities | Java Code Geeks
http://www.javacodegeeks.com/2014/08/builder-design-pattern-applied.html | Builder Design Pattern Applied | Java Code Geeks
http://www.javacodegeeks.com/2014/08/osgi-the-gateway-into-micro-services-architecture.html | OSGi: the gateway into micro-services architecture | Java Code Geeks
http://www.javacodegeeks.com/2014/08/try-optimising-the-memory-consumption-first.html | Try optimising the memory consumption first | Java Code Geeks
http://www.javacodegeeks.com/2014/08/command-design-pattern-applied.html | Command Design Pattern Applied | Java Code Geeks
http://www.javacodegeeks.com/2014/08/how-to-negotiate-your-salary.html | How to Negotiate Your Salary | Java Code Geeks
http://www.javacodegeeks.com/2014/08/understanding-volatile-via-example.html | Understanding volatile via example | Java Code Geeks
http://www.javacodegeeks.com/2014/08/autoboxing-unboxing-and-nosuchmethoderror.html | Autoboxing, Unboxing, and NoSuchMethodError | Java Code Geeks
http://www.javacodegeeks.com/2014/08/java-concurrency-tutorial-atomicity-and-race-conditions.html | Java Concurrency Tutorial - Atomicity and race conditions | Java Code Geeks
http://www.javacodegeeks.com/2014/08/15-java-socket-programming-networking-interview-questions-and-answers.html | 15 Java Socket Programming, Networking Interview Questions and Answers | Java Code Geeks
http://www.javacodegeeks.com/2014/08/pizza-problem-builder-vs-decorator.html | Pizza problem - builder vs decorator | Java Code Geeks
http://www.javacodegeeks.com/2014/08/this-is-stuff-junit-dynamic-tests-generation.html | This is Stuff: jUnit: Dynamic Tests Generation | Java Code Geeks
http://www.javacodegeeks.com/2014/08/java-concurrency-tutorial-visibility-between-threads.html | Java Concurrency Tutorial - Visibility between threads | Java Code Geeks
http://www.javacodegeeks.com/2014/08/programming-language-job-trends-part-1-august-2014.html | Programming Language Job Trends Part 1 – August 2014 | Java Code Geeks
http://www.javacodegeeks.com/2014/09/the-next-it-revolution-micro-servers-and-local-cloud.html | The next IT revolution: micro-servers and local cloud | Java Code Geeks
http://www.javacodegeeks.com/2014/09/5-things-i-do-to-stay-relevant.html | 5 Things I Do to Stay Relevant | Java Code Geeks
http://www.javacodegeeks.com/2014/09/analysing-the-performance-degradationimprovements-of-a-java-ee-application-with-interceptors.html | Analysing the performance degradation/improvements of a Java EE application with interceptors | Java Code Geeks
http://www.javacodegeeks.com/2014/09/secure-rest-services-using-spring-security.html | Secure REST services using Spring Security | Java Code Geeks
http://www.javacodegeeks.com/2014/09/everything-developers-need-to-know-about-xpaas.html | Everything Developers Need To Know About xPaaS | Java Code Geeks
http://www.javacodegeeks.com/2014/09/programming-language-job-trends-part-2-august-2014.html | Programming Language Job Trends Part 2 - August 2014 | Java Code Geeks
http://www.javacodegeeks.com/2014/09/jaxb-a-newcomers-perspective-part-2.html | JAXB – A Newcomer’s Perspective, Part 2 | Java Code Geeks
http://www.javacodegeeks.com/2014/09/use-cases-for-elasticsearch-geospatial-search.html | Use Cases for Elasticsearch: Geospatial Search | Java Code Geeks
http://www.javacodegeeks.com/2014/09/why-you-should-control-visibility-of-class-and-interface-in-java.html | Why you should control Visibility of Class and Interface in Java | Java Code Geeks
http://www.javacodegeeks.com/2014/09/garbage-collectors-serial-vs-parallel-vs-cms-vs-g1-and-whats-new-in-java-8.html | Garbage Collectors – Serial vs. Parallel vs. CMS vs. G1 (and what’s new in Java 8) | Java Code Geeks
http://www.javacodegeeks.com/2014/09/memory-leaks-measuring-frequency-and-severity.html | Memory leaks – measuring frequency and severity | Java Code Geeks
http://www.javacodegeeks.com/2014/09/programming-language-job-trends-part-3-august-2014.html | Programming Language Job Trends Part 3 – August 2014 | Java Code Geeks
http://www.javacodegeeks.com/2014/09/angularjs-tutorial-getting-started-with-angularjs.html | AngularJS Tutorial: Getting Started with AngularJS | Java Code Geeks
http://www.javacodegeeks.com/2014/09/jvm-permgen-where-art-thou.html | JVM PermGen – where art thou? | Java Code Geeks
http://www.javacodegeeks.com/2014/09/high-availability-design.html | High availability design | Java Code Geeks
http://www.javacodegeeks.com/2014/09/java-method-logging-with-aop-and-annotations.html | Java Method Logging with AOP and Annotations | Java Code Geeks
http://www.javacodegeeks.com/2014/09/java-9-the-ultimate-feature-list.html | Java 9 – The Ultimate Feature List | Java Code Geeks
http://www.javacodegeeks.com/2014/09/what-sonarqube-is-not.html | What SonarQube Is NOT | Java Code Geeks
http://www.javacodegeeks.com/2014/09/a-classloading-mystery-solved.html | A classloading mystery solved | Java Code Geeks
http://www.javacodegeeks.com/2014/09/3-examples-of-parsing-html-file-in-java-using-jsoup.html | 3 Examples of Parsing HTML File in Java using Jsoup | Java Code Geeks
http://www.javacodegeeks.com/2014/09/use-cases-for-elasticsearch-index-and-search-log-files.html | Use Cases for Elasticsearch: Index and Search Log Files | Java Code Geeks
http://www.javacodegeeks.com/2014/09/the-measure-of-success.html | The Measure Of Success | Java Code Geeks
http://www.javacodegeeks.com/2014/09/processing-java-annotations-using-reflection.html | Processing Java Annotations Using Reflection | Java Code Geeks
http://www.javacodegeeks.com/2014/09/maven-common-problems-and-pitfalls.html | Maven Common Problems and Pitfalls | Java Code Geeks
http://www.javacodegeeks.com/2014/09/jpa-tutorial-mapping-entities-part-1.html | JPA tutorial: Mapping Entities – Part 1 | Java Code Geeks
http://www.javacodegeeks.com/2014/09/jquery-ajax-servlets-integration-building-a-complete-application.html | jQuery Ajax – Servlets Integration: Building a complete application | Java Code Geeks
http://www.javacodegeeks.com/2014/09/embedding-a-xmpp-server-inside-your-jsf-web-application-using-vysper-tomee-and-primefaces.html | Embedding a XMPP server inside your JSF Web Application using Vysper, TomEE and PrimeFaces | Java Code Geeks
http://www.javacodegeeks.com/2014/09/built-in-fake-objects.html | Built-in Fake Objects | Java Code Geeks
http://www.javacodegeeks.com/2014/09/one-jar-to-rule-them-all-apache-tomee-shrinkwrap-javaee-boot.html | One Jar To Rule Them All: Apache TomEE + Shrinkwrap == JavaEE Boot | Java Code Geeks
http://www.javacodegeeks.com/2014/09/apache-camel-for-micro%c2%adservice-architectures.html | Apache Camel for Micro­service Architectures | Java Code Geeks
http://www.javacodegeeks.com/2014/09/optional-and-objects-null-pointer-saviours.html | Optional and Objects: Null Pointer Saviours! | Java Code Geeks
http://www.javacodegeeks.com/2014/09/embedded-jetty-and-apache-cxf-secure-rest-services-with-spring-security.html | Embedded Jetty and Apache CXF: secure REST services with Spring Security | Java Code Geeks
http://www.javacodegeeks.com/2014/09/the-fastest-way-of-drawing-uml-class-diagrams.html | The fastest way of drawing UML class diagrams | Java Code Geeks
http://www.javacodegeeks.com/2014/10/neo4j-collecting-multiple-values.html | Neo4j: COLLECTing multiple values | Java Code Geeks
http://www.javacodegeeks.com/2014/10/neo4j-genericvague-relationship-names.html | Neo4j: Generic/Vague relationship names | Java Code Geeks
http://www.javacodegeeks.com/2014/10/kafka-benchmark-on-chronicle-queue.html | Kafka Benchmark on Chronicle Queue | Java Code Geeks
http://www.javacodegeeks.com/2014/10/trace-output-with-drools.html | Trace output with Drools | Java Code Geeks
http://www.javacodegeeks.com/2014/10/logical-vs-physical-clock-optimistic-locking.html | Logical vs physical clock optimistic locking | Java Code Geeks
http://www.javacodegeeks.com/2014/10/jpa-tutorial-mapping-entities-part-2.html | JPA Tutorial: Mapping Entities – Part 2 | Java Code Geeks
http://www.javacodegeeks.com/2014/10/jar-hell-made-easy-demystifying-the-classpath-with-jhades.html | Jar Hell made Easy - Demystifying the classpath with jHades | Java Code Geeks
http://www.javacodegeeks.com/2014/10/di-containers-are-code-polluters.html | DI Containers are Code Polluters | Java Code Geeks
http://www.javacodegeeks.com/2014/10/the-future-is-micro-service-architectures-on-apache-karaf.html | The future is Micro Service Architectures on Apache Karaf | Java Code Geeks
http://www.javacodegeeks.com/2014/10/stateless-spring-security-part-1-stateless-csrf-protection.html | Stateless Spring Security Part 1: Stateless CSRF protection | Java Code Geeks
http://www.javacodegeeks.com/2014/10/maven-excludes-all-transitive-dependencies.html | Maven excludes all transitive dependencies | Java Code Geeks
http://www.javacodegeeks.com/2014/10/conceptual-model-vs-graph-model.html | Conceptual Model vs Graph Model | Java Code Geeks
http://www.javacodegeeks.com/2014/10/getting-started-with-docker.html | Getting Started with Docker | Java Code Geeks
http://www.javacodegeeks.com/2014/10/factory-without-if-else.html | Factory Without IF-ELSE | Java Code Geeks
http://www.javacodegeeks.com/2014/10/injecting-domain-objects-instead-of-infrastructure-components.html | Injecting domain objects instead of infrastructure components | Java Code Geeks
http://www.javacodegeeks.com/2014/10/java-and-the-sweet-science.html | Java And The Sweet Science | Java Code Geeks
http://www.javacodegeeks.com/2014/10/jpa-tutorial-mapping-entities-part-3.html | JPA Tutorial: Mapping Entities – Part 3 | Java Code Geeks
http://www.javacodegeeks.com/2014/10/what-does-a-software-architect-do.html | What Does a Software Architect Do? | Java Code Geeks
http://www.javacodegeeks.com/2014/10/java-9-behind-the-scenes-where-do-new-features-come-from.html | Java 9 Behind the Scenes: Where Do New Features Come From? | Java Code Geeks

Exception Handling in Java

http://northconcepts.com/blog/2013/01/18/6-tips-to-improve-your-exception-handling/

Java Tech Blogs

I'll list some of the ones I'm reading, via RSS:

Blog aggregators:

• http://java.dzone.com
• http://javacodegeeks.com
• http://www.programcreek.com/2012/11/top-100-java-developers-blogs/

Blogs:

• http://relation.to/Bloggers/Gavin - Gavin King - the guy behind Hibernate, Seam, Weld
• http://blog.springsource.com/ - Spring source team blog
• http://developers-blog.org/
• http://misko.hevery.com/ - Misko Hevery, on testability and tdd
• http://krams915.blogspot.in/
• my blog

Websites:

• A couple of JavaLobby forum sections - you can follow whichever section of the forum you like
• http://www.theserverside.com/ - The Server Side
• http://www.devx.com/Java/Door/6972 - DevX Java zone
• http://www.javaworld.com/ - JavaWorld
• http://www.infoq.com/java/ - InfoQ
• http://www.java.net/articles - java.net articles
• http://onjava.com/

http://www.mkyong.com/featured/top-20-java-websites/

MySql Date Function Issues

The format of a DATE value is 'YYYY-MM-DD'. According to standard SQL, no other format is permitted. You should use this format in UPDATE expressions and in the WHERE clause of SELECT statements. For example:

SELECT * FROM t1 WHERE date >= '2003-05-05';

http://dev.mysql.com/doc/refman/5.0/en/using-date.html

Some interview Preparation Guide

http://www.quora.com/What-should-I-do-in-the-next-6-months-to-get-into-a-company-like-Amazon-Google
http://www.quora.com/Career-Cup-or-GeeksforGeeks


http://www.quora.com/What-types-of-technical-questions-are-asked-in-developer-interviews/answer/Sachin-Gupta-6

Technical Interviews generally occur at 3 different levels.

1. When you are just out of college (Under grad), at that time its very rare that you are selected for any particular team. Sometimes even the role is not specified while you are being interviewed. However that can be negotiated after you have been selected in the interviews. In such interviews the focus is mostly on generic algorithmic questions. The aim is to test your problem solving aptitude
2. When you have some year work or you are passing out of masters then you are generally recruited for a particular team/role in the organization. In these interviews there is a mix of algorithmic and your expertise specific questions.
3. The third level is when you have worked in the industry for the last 8-9 years. There your experience and your resume speaks more than any technical interview that you give. There the questions generally asked for to find out how well you would gel in with the company's work culture.

As I am just out of college and have been selected in Google through my campus interviews I am best suited to discuss about the first category.

Most of the selection process has two levels. A written round and a set of one-to-one interviews.

Written round also has two further parts. One is objective questions and the other is programming questions. The objective questions may be as 

1. Give the programming paradigm used to solve the Travelling Salesman Problem.
2. Give the worst case complexity of Kruskal's Minimum Spanning Tree.
3. Which protocol would you use for Live Video Streaming.

The programming questions asked in the written test are generally on the tougher side because while attempting them you have both sufficient time and working space to iterate over the solution. Questions asked maybe of type

1. A list of strings is given. Find the number of non-anagramic strings in the list i.e. the number of strings which do not have any anagram int the list.
2. Consider that you have 2 strings S1 and S2. You have to implement {S1 minus S2} operation, that is remove the characters present in S2 from S1. Eg S1="abcdB" and S2="b" and result would be S1="acdB". the operation has to be in-place, that is within S1 only
3. You are given a binary tree. A term diameter is defined as the length of the longest path between  leaf nodes. Also diameter of a node is greater than/equal to:
    
   1) Diameter of left sub tree
   2) Diameter of right sub tree
   3) Length of longest path passing through the node.
   
   Write a program to find the diameter of the binary tree

The second is the multiple sets of personal interviews. The questions asked in them may vary over a large range of topics. One type of categorization that can be done is

1. Programming Questions
2. Testing Questions
3. Design Questions

Example of Programming questions are

• Number of occurrences of a number in a sorted array.
• Find the intervals from a set of intervals in which a given point lies
• Convert a doubly linked list to a Binary Search Tree

Some examples of Testing questions are 

• Test cases for overlap of rectangles
• Write test cases to test the functioning of a code that reverses singly linked lists.
• How to test a program that outputs factorial of a number?

Examples of Design questions are

• Design data structure to implement a Desktop Manager. (more detail:http://www.mycareerstack.com/tes...)
• Design the data structure and functions of a shopping cart.
• How will you do load balancing on a server, this question was an extension of this primary question - http://www.mycareerstack.com/que...

After this broad level of categorization you can further divide the questions into categories depending on their topics. It can be 

• String Manipulation - http://www.mycareerstack.com/que...
• Data Structures - http://www.mycareerstack.com/que...
• Trees and Graphs - http://www.mycareerstack.com/que...
• General Algorithms - http://www.mycareerstack.com/que...
• Mathematics - http://www.mycareerstack.com/que...

There are two types of problems. Generic ones and algorithm dependent.

The former consists of problems based on string manipulation, arrays, linked list etc. In such problems the focus is on covering all the cases that may occur. For example you are asked to reverse a portion of an array beginning from a particular index and ending at a particular index, then you must be thorough in covering all the cases that may occur. Solving these kinds of problems is easier if you have done sufficient practice. 

The other kind of questions are dependent on a particular algorithm or coding trick and sometimes it becomes very difficult to solve them if you have not read about them earlier. For example 

• Searching an element in a 2D matrix sorted separately along the X and the Y axis - http://www.mycareerstack.com/que...
• Find the intervals from a given set of intervals in which a number lies -http://www.mycareerstack.com/que.... If you have not read about interval trees then it is very difficult to come up with a solution for this on the spot.
• Finding the lowest common ancestor in the most efficient manner.
• Iterative post order traversal of a binary tree - http://www.mycareerstack.com/tut...
  

Also I have shared my experience of sitting in the campus interviews, and I would strongly suggest you to read it http://www.mycareerstack.com/blo...

Please note that in no way what I am have written above is an exhaustive description of technical interviews. Each company has its own pattern of interview questions and it may vary significantly. 

Note: All the questions posted above have occurred in some or the other technical interviews of companies like Google, Microsoft, Amazon

http://randomrants.quora.com/Hacking-the-Programming-Interview-1

http://www.quora.com/What-are-the-ways-to-utilize-6-months-to-build-skill-set-to-get-hired-at-Facebook-or-Google

http://www.quora.com/How-can-I-prepare-for-interviews-in-any-big-software-company-like-Google-Facebook-Amazon-Microsoft-DE-Shaw-Salesforce-Flipkart-Expedia-Morgan-Stanley-Goldman-Sachs-Adobe-eBay-Walmart-LinkedIn-etc/answer/Ayush-Jain-62?srid=Xymv&share=1

http://learn.hackerearth.com/questions/?type=Trees+and+Graphs

Java Architect Interview Preparation

http://www.javagyan.com/preparing-for-an-interview/java-j2ee-interview-questions

Process
 •    Have you heard of or used test-driven development? (Hint: e.g. XP process )
 •    What development processes have you followed in the past? (Hint: Rational, XP, waterfall )
 •    How do you approach capturing client requirements? (Hint: Numbered requirements, use cases )
 •    What process steps would you include between the capture of requirements and when coding begins? (Hint: Architecture, Design, UML modeling, etc )
 •    How would you go about solving performance issue in an application? (Hint: Set goals, establish bench, profile application, make changes one at a time )
 •    What developer based testing are you familiar with (before system testing?) (Hint: Unit test discussion )
 •    How might you test a business system exposed via a Web interface? (Hint: Automated script emulating browser)
 •    What is your experience with iterative development? (Hint: Multiple iteration before release)
Distributed Application
 •    Explain a typical architecture of a business system exposed via Web interface? (Hint: Explain tiers (presentation, enterprise, resource) Java technology used in each tiers, hardware distribution of Web servers, application server, database server )
 •    Describe what tiers you might use in a typical large scale (> 200 concurrent users) application and the responsibilities of each tier (where would validation, presentation, business logic, persistence occur). (Hint: Another way of asking same question as above if their answer wasn’t specific enough)
 •    Describe what you understand by being able to “scale” an application? How does a J2EE environment aid scaling? (Hint: Vertical and Horizontal scaling. Thread management, clustering, split tiers )
 •    What are some security issues in Internet based applications? (Hint: authentication, authorization, data encryption, denial service, xss attacks, SQL injection attacks )

General
 •    What configuration management are you familiar with? (Hint: e.g. CVS, ClearCase )
 •    What issue/tracking process have you followed? (Hint: Want details on bug recording and resolution process).
 •    What are some key factors to working well within a team? (Hint: Gets a view on how you would work within interviewer’s environment.)
 •    What attributes do you assess when considering a new job? (what makes it a good one)? (Hint: Insight into what motivates you.)
 •    What was the last computing magazine you read? Last computing book?
 •    What is a regular online magazine/reference you use? (Hint: Understand how up to date you keep yourself.)


UML
http://www.javagyan.com/preparing-for-an-interview/uml-interview-questions

If an Employee class is present and its objects are added in an arrayList. Now I want the list to be sorted on the basis of the employeeID of Employee class. What are the steps?
 1.    Implement Comparable interface for the Employee class and override the compareTo(Object obj) method in which compare the employeeID
 2.    Now call Collections.sort() method and pass list as an argument.

How about when Employee class is a jar file and you do not have access to its source code?
 •    Since Comparable interface cannot be implemented, create Comparator and override the compare(Object obj, Object obj1) method .
 •    Call Collections.sort() on the list and pass Comparator as an argument.

Java Collections:
http://www.javagyan.com/preparing-for-an-interview/java-collection-interview-questions

Hibernate Interview Questions
http://www.javagyan.com/preparing-for-an-interview/hibernate-interview-questions

Common Interview Questions
http://www.javagyan.com/preparing-for-an-interview/50-common-interview-questions-and-answers

Interview Questions and Techniques
http://ericbweimer.blogspot.com/2012/10/java-architect-interview-questions.html


Discussion on Various Architectures
http://java-success.blogspot.com/2011/10/java-interview-questions-and-answers-on.html

Technical Job Interview Questions for Java EE architects
http://java.dzone.com/articles/technical-job-interview

Java Architectural Knowledge for Job Interviews. Are we prepared?
https://weblogs.java.net/node/240270/atom/feed


http://j2eearchitec.blogspot.com/2012/11/javaj2ee-architect-interview-questions.html

http://vitalflux.com/technical-architect-interview-questions-part-2/

SOA Interview Questions
http://www.javagyan.com/preparing-for-an-interview/soa-interview-questions









http://www.geeksforgeeks.org/

http://www.careercup.com/

http://www.quora.com/What-types-of-technical-questions-are-asked-in-developer-interviews/answer/Sachin-Gupta-6

Introdution to Algorithms
Videos:
http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/video-lectures/  

https://www.coursera.org/

http://webcast.berkeley.edu/

Preparing for technical coding interviews
https://oj.leetcode.com/

http://codeforces.com/

https://www.hackerrank.com/work/?utm_source=recruit2&utm_campaign=rebranding

http://learn.hackerearth.com/