Home » Author Archives: Rivu Chakraborty

Author Archives: Rivu Chakraborty

Rivu Chakraborty
Rivu Chakraborty is a Google Certified Android Developer, Sr. Tech Member of Institute of Engineers (India), he also have certifications on Scrum. He is also an author of multiple books on Kotlin, Reactive Programming, Functional Programming and Android Development, published by renowned publication houses. Having total 5+ years of experience he is presently working as a Sr. Software Engineer (Android) at Indus Net Technologies Pvt. Ltd. Rivu Chakraborty considers himself a Kotlin and Android enthusiast and a Kotlin evangelist. He has been using Kotlin since December 2015, so he has around 2 years' experience in Kotlin. As part of his mission to expand the use and knowledge of the Kotlin Language as much as possible, he created the KotlinKolkata User Group, one of the most active Kotlin user groups throughout the world and he is a Founder Organizer of KotlinKolkata. He is also an active member of GDG Kolkata and gives talks at GDG Kolkata Meetups.

Android Settings Example

During the development of mobile applications, a common requirement is of storing app related data to the phone. In Android we perform this task with the help of Preference APIs. We may also need settings that allow users to modify preferences in app. Thankfully Android provides a powerful framework to manage user preferences. The provided mechanism allows us to show, save and manipulate user’s ...

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Apache HTTP Client Example

In this tutorial we will discuss Apache HTTP Client. Apache HttpClient makes programmatic HTTP protocol interactions easier. It is a standards based Java implementation of Http protocols, Provides complete implementation of HTTP methods (GET, POST, DELETE, PUT, HEAD, OPTIONS, TRACE). For this example I’m using Eclipse for client side Java code and PHP for writting the server side code. In this tutorial I ...

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org.apache.commons.net.ftp.ftpclient Example

In this example we are going to elaborate the use of the FTPClient class in the package: org.apache.commons.net.ftp, as the package name says, it is a member of the Apache Commons, and deals with the FTP. As like other classes of the Apache Commons This class also provides us with some really helpful methods. The methods of this class as other classes ...

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JPA Relationship Annotations Example

Here we will look into the JPA Relationship Annotations. This article takes you through the relationships between Entities. Generally the relations are more effective between tables in the database and as We already know that in RDBMS every entity(table) must be related to other entities to become meaningful. Here the entity classes are treated as relational tables (concept of JPA). ...

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JPA SQL Stored Procedure Example

Here we will discuss about the JPA SQL Stored Procedures, i.e. using database Stored Procedures from JPA (Java Persistance API) along with Cursors, Multiple Parameters (IN & OUT) etc. We have used EclipseLink for our project. However this can also be done with other JPA providers such as Hibernate, Toplink, Spring Data JPA, etc. JPA 2.1 supports calling database stored procedures ...

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JDBC CallableStatement with Oracle Stored Procedure Example Tutorial

In this Article We will learn how to use JDBC CallableStatement along with Stored Procedures, Cursors, STRUCT etc. The CallableStatement interface used to execute SQL stored procedures. The JDBC API provides a stored procedure SQL escape syntax that allows stored procedures to be called in a standard way for all RDBMSs. For this Example we have used Oracle Database. We ...

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java.util.concurrent.RejectedExecutionHandler Example

Here we will discuss about the RejectedExecutionHandler Interface in the java.util.concurrent package. This interface is really helpfull when working with the ThreadPoolExecutor. 1. Overview & Usage The interface java.util.concurrent.RejectedExecutionHandler is a handler for tasks that cannot be executed by a ThreadPoolExecutor ( a class that implements ExecutorService, ). This may occur when no more threads or queue slots are available ...

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org.apache.commons.lang3.ClassPathUtils Example

In this example we are going to elaborate the use of the ClassPathUtils class in the package: org.apache.commons.lang3 or previouslyorg.apache.commons.lang, as the package name says, it is a member of the Apache Commons Lang, and deals with the classpaths. As like other classes of the Apache Commons This class also provides us with some really helpful methods. The methods of this ...

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org.apache.commons.lang3.CharUtils Example

In this example we are going to elaborate the use of the CharUtils class in the package: org.apache.commons.lang3 or previously org.apache.commons.lang, as the package name says, it is a member of the Apache Commons Lang, and deals with Character (char) Manipulation. As like other classes of the Apache Commons This class also provides us with some really helpful methods. The ...

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org.apache.commons.lang3.StringUtils Example

In this example we are going to elaborate the use of the StringUtils class in the package: org.apache.commons.lang3.StringUtils or previously org.apache.commons.lang.StringUtils, as the package name says, it is a member of the Apache Commons Lang, and deals with String Manipulation. As like other classes of the Apache Commons This class also provides us with some really helpful methods. The methods of ...

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