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⇱ Jay Sridhar - DZone Member

Jay Sridhar

Works at @jay_sridhar

Joined Feb 2017

http://www.novixys.com/blog/

Stats

Reputation: 658
Pageviews: 5.3M
Articles: 17
Comments: 5

Articles

Java String Format Examples
Always forgetting the Java String formatting specifiers? Or maybe you never took the time to learn. Here's a reference of the various flags you can use.
Updated July 11, 2021
· 3,658,646 Views · 144 Likes
Sorting Dictionaries in Python
In this post, we take a look at how to sort the entries in a Python dictionary. Sometimes you just need to sort the unsorted!
June 28, 2017
· 153,168 Views · 5 Likes
Listing a Directory With Python
Learn how to list contents of a directory from Python. Also, easily find and process files matching conditions from your Python program. Cool, huh?
June 17, 2017
· 179,350 Views · 2 Likes
Making Pivot Table Using Java Streams
Pivot tables are great for summarizing data. Fortunately, you can use Streams to prepare and sort your data so you can put it into a more readable format.
April 12, 2017
· 45,864 Views · 32 Likes
Using Apache POI to Read Excel
If you use Excel data in your work, the Apache POI library is a great way to read, incorporate, and format your data in Excel spreadsheets.
April 3, 2017
· 59,135 Views · 24 Likes
Apache Spark: Setting Up a Cluster on AWS
You can augment and enhance Apache Spark clusters using Amazon EC2's computing resources. Find out how to set up clusters and run master and slave daemons on one node.
April 3, 2017
· 22,104 Views · 8 Likes
A Guide to Java's SimpleDateFormat
Formatting dates is always a challenge, but Java's SimpleDataFormat class has plenty of options (and a few pitfalls) that can take the frustration out of dates.
Updated April 2, 2017
· 172,203 Views · 15 Likes
Sorting Large CSV Files Using SQLite
Sorting large CSV files can be a pain. In this post we take a look at how to ease that pain a little with a little help from SQLite and JDBC.
March 28, 2017
· 7,609 Views · 3 Likes
Java Streams groupingBy Examples
Learn how to perform SQL-like grouping and summarizing calculations on Java Collections using CSV data, POJOs, and multiple fields.
March 24, 2017
· 136,733 Views · 38 Likes
The Programmer's Way to Convert Excel to CSV (With UTF-8)
Excel provides a way to save spreadsheets as a CSV file, but it seems to fail at handling UTF-8 characters. See how a real programmer deals with the problem.
March 20, 2017
· 96,057 Views · 21 Likes
Java HashMap Search and Sort
A HashMap has plenty of uses, so let's see how you can find keys and values, load data from a CSV file into one, and use it for sorting.
March 16, 2017
· 83,761 Views · 27 Likes
How to Convert CSV to JSON in Java
CSV data can be converted to JSON via a POJO using Jackson or, if a POJO is not defined or required, you can use the Java Collection classes.
Updated March 13, 2017
· 194,623 Views · 18 Likes
Benchmarking Java Lists Performance
LinkedList is slightly slower than ArrayList with adding items to the end of the list. It is also slower when retrieving items with an index (random access).
March 7, 2017
· 21,824 Views · 10 Likes
The Trouble With Enums
Java has provided native enum types from version 1.5 onwards. Some issues arise with the use of enums in Java code, which this article attempts to address.
March 1, 2017
· 32,610 Views · 27 Likes
A Look at Java Collections
In a kickoff to a series on the Java Collections framework, we look at the hierarchy and an overview of uses. It's more than just generic lists, maps, and sets!
February 27, 2017
· 31,732 Views · 50 Likes
Java Scanner: Text Parsing Made Easy
Java's Scanner class, and the occasional bit of RegEx, makes parsing text trivial. You can put this to good use in a number of ways, which we'll dive into here.
February 22, 2017
· 52,134 Views · 8 Likes
Load XML Into MySQL Using Java
If you like XML's handy hierarchical style and the familiarity of Java, you're in luck: You can quickly parse your XML data and put it into a MySQL database with ease.
February 21, 2017
· 56,308 Views · 11 Likes

Comments

The Programmer's Way to Convert Excel to CSV (With UTF-8)

Mar 26, 2017 · Grzegorz Ziemoński

Wish the BOM could be left off! Gets in the way when working with tools other than Excel. However, Excel does not load the file properly without the BOM.

A Look at Java Collections

Mar 03, 2017 · Duncan Brown

Article has been updated here

The Trouble With Enums

Mar 03, 2017 · Grzegorz Ziemoński

Agreed. There is no specific reason to assign to EnumSet<> when Set<> will do. That is unless some methods specific to EnumSet<> need to be invoked.

Java String Format Examples

Feb 24, 2017 · Grzegorz Ziemoński

That's correct! Thanks for pointing it out.

Java Scanner: Text Parsing Made Easy

Feb 23, 2017 · Duncan Brown

While the concept of the Scanner is good, the API could have been better. Sometimes it makes you want to throw up your hands and revert back to String.split(), Pattern and BufferedReader.

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