HP Cloud Services Pricing

HP Cloud Compute Pricing

Instance Type	RAM (GB)	Virtual Cores	Disk (GB)	($/hr)	($ Monthly aprx)
Standard Extra Small	1	1	30	$0.04	$30.00
Standard Small	2	2	60	$0.08	$60.00
Standard Medium	4	2	120	$0.16	$120.00
Standard Large	8	4	240	$0.32	$240.00
Standard Extra Large	16	4	480	$0.64	$480.00
Standard Double Extra Large	32	8	960	$1.28	$960.00

HP Cloud Services Non-CDN Bandwidth Pricing

Bandwidth	Price ($/GB/mo.)
IN All Data Transfers In	FREE

OUT
First 1 GB	FREE
Up to 10 TB	$0.12
Next 40 TB	$0.09
Next 100 TB	$0.07
Next 350 TB	$0.05
More than 500 TB	Contact HP

HPCloud Pricing

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JPA 2 new feature @ElementCollection explained

@ElementCollection is new annotation introduced in JPA 2.0, This will help us get rid of One-Many and Many-One shitty syntax.

Example 1: Stores list of Strings in an Entity

@Entity
public class Users implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
@ElementCollection
    private List<String> certifications = new ArrayList<String>();

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public List<String> getCertifications() {
        return certifications;
    }

    public void setCertifications(List<String> certifications) {
        this.certifications = certifications;
    }
..
}

        Users u = new Users();
        u.getCertifications().add("Sun Certified Java Programmer");
        em.persist(u);

Generated Tables

Users
Column --> ID
    Row             1

Users_CERTIFICATIONS
…

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ArrayList vs LinkedList vs HashSet Performance Comparision

August 04, 2012

ConclusionsInserting & Reading sequentially from Collection prefer LinkedList/ArrayListInserting & Reading/Deleting by Search/equals from Collection prefer HashSetInserting, ArrayList & LinkedList performs best while HashSet takes double the timeReading, HashSet performs best while ArrayList & LinkedList are marginally lessDeleting, HashSet performs 10 times better than ArrayList & ArrayList performs 4 times better than LinkedList. LinkedList is slow because of sequencial search Bottom line : unless you are not going to iterate using for(Integer i : list ) then prefer HashSet
Inserting/Reading/Deleting integer's from zero till countJDK7Collectionactioncounttime msArrayListInsert1000/1LinkedListInsert1000/1HashSetInsert1000/1ArrayListInsert100005LinkedListInsert100004HashSetInsert100007ArrayListInsert10000011LinkedListInsert10000011HashSetInsert10000021ArrayListGet/Read1000LinkedListGet/Read1000HashSetGet/Read1000ArrayListGet/Read100004LinkedListGet/Read100003Has…

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Validating CSV Files

July 05, 2011

What is CsvValidator ?
A Java framework which validates any CSV files something similar to XML validation using XSD.

Why should I use this ?
You don't have to use this and in fact its easy to write something your own and also checkout its source code for reference.

Why did I write this ?
Some of our projects integrate with third party application which exchanges information in CSV files so I thought of writing a generic validator which can be hooked in multiple projects or can be used by QA for integration testing.

What is the license clause ?
GNU GPL v2

Are there any JUnit test cases for me checkout ?
Yes, source

How to integrate in my existing project ?

Just add the Jar which can be downloaded from here CsvValidator.jar and you are good.

Instantiate CsvValidator constructor which takes these 3 arguements

// filename is the the file to be validated and here is a sample // list - defines all the fields in the above csv file ( a field has index, type, isOptional, rege…

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