vulab | Monthly Archive | October

Archive | October, 2014

Posted on 31 October 2014 by Srinivas Nelakuditi

Quick Path to Learn Java with Vulab Java Training

If you are reading this blog, I know you are interested in getting trained on Java. Let us get started with the basics. if you want to learn from Java Experts look no further and we at Vulab provide the best java training. Java is the programming language created by Sun Micro Systems and released […]

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Posted on 25 October 2014 by Srinivas Nelakuditi

Java 8 Lambda Expressions Tutorial -7

Let us use Java 8 Lambda feature to do a stream sorting, limiting and collecting the output to a list. We are going to learn by example. We will create a list of few BankCheckingAccount objects. We are going to use lambdas to sort and limit only two records and we will store the output […]

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Posted on 25 October 2014 by Srinivas Nelakuditi

Java 8 Lambda Expressions Tutorial -6

Java 8 Lambda Feature can also be used to filter streams and also limit the number of records required from stream. In the below example. We are creating a list of BankCheckingAccounts. We are depositing 1000 dollars into every account using lambdas. We are creating a balance filter and zip code filter. We are printing […]

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Posted on 25 October 2014 by Srinivas Nelakuditi

Java 8 Lambda Expressions Tutorial -5

Lambda Expressions is a very powerful feature available in JDK 8. Let us learn the technique of creating filters using lambdas and applying them on collections. We can stream on a collection and apply multiple filters. In the below example. We are creating a list of BankCheckingAccounts. We are depositing 1000 dollars into every account […]

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Posted on 25 October 2014 by Srinivas Nelakuditi

Java 8 Lambda Expressions Tutorial -4

Let us do another example to use lambda filtering in Java 8. Let us learn by example than by theory. Given a list of bank accounts with firstname, lastname and account balance. Find all accounts with balance greater than 1000 dollars. Filtering is a very power technique to filter. Objects required from a list or […]

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Posted on 25 October 2014 by Srinivas Nelakuditi

Java 8 Lambda Expressions Tutorial -3

Lambda is one of the most powerful feature added to java since 2005. Let us learn the power of lambda by example. Let us create a class called BankCheckingAccount.java Let us create a list of BankCheckingAccounts. Each checking account has an initial balance of 100 dollars. Now deposit another 100 dollars into each account using […]

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Posted on 25 October 2014 by Srinivas Nelakuditi

Java 8 Lambda Expressions Tutorial -2

Lambda Basic Syntax: (parameters) ->expression or (parameters) ->{ statements; } Java 8 Lambda Expressions can be very effective when sorting collections. Let us learn how to use Java Lambdas for Sorting Java Collections by Example:

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Posted on 25 October 2014 by Srinivas Nelakuditi

Java 8 Lambda Expressions Tutorial -1

Lambda expression feature is new in JDk8. This is one of the major feature added to java since Generics and Annotations in 2005. Let us learn Lambda expressions in a series of learn by example tutorials: Definition of Lambda Expression: A major confusion with  Java anonymous class as an interface that contains only one method, […]

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Posted on 18 October 2014 by Srinivas Nelakuditi

Install Apache Storm for Development

Step 1: Boot up your Ubuntu virtual machine using Oracle Virtual Box Step 2: Install JDK 7 or JDK 8 and set JAVA_HOME Step 3: Install Maven2 Step 4: Download Storm use tar -xvzf apache-storm-0.9.3-rc1.tar.gz Your environment is now ready for running your storm projects. In the next blog we will to code for storm […]

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Posted on 12 October 2014 by Srinivas Nelakuditi

Guarantees from Apache Storm

Apache Storm provides guarantees and new possibilities which could not achieved with Hadoop and other batch oriented data processing engines. Apache Strom provides real-time computation and facilitates real-time feedback for any data. Storm helps in parallel real-time processing of data. Key Guarantees of Storm: Broad Set of Use Cases: Apache Storm can process streams of […]

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