SivaLabs

MyBatis is an SQL Mapper tool which greatly simplifies the database programing when compared to using JDBC directly.

MyBatis Tutorial: Part1 – CRUD Operations

MyBatis Tutorial: Part-2: CRUD operations Using Annotations

MyBatis Tutorial: Part 3 – Mapping Relationships

MyBatis Tutorial : Part4 – Spring Integration

Step1: Create a Maven project and configure MyBatis dependencies.

<project xmlns="http://maven.apache.org/POM/4.0.0" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>

 <groupId>com.sivalabs</groupId>
 <artifactId>mybatis-demo</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <packaging>jar</packaging>

 <name>mybatis-demo</name>
 <url>http://maven.apache.org</url>

 <properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 </properties>

 <build>
  <plugins>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>2.3.2</version>
    <configuration>
     <source>1.6</source>
     <target>1.6</target>
     <encoding>${project.build.sourceEncoding}</encoding>
    </configuration>
   </plugin>
  </plugins>
 </build>

 <dependencies>
  <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.10</version>
   <scope>test</scope>
  </dependency>
  <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.1.1</version>
  </dependency>
  <dependency>
     <groupId>mysql</groupId>
     <artifactId>mysql-connector-java</artifactId>
     <version>5.1.21</version>
     <scope>runtime</scope>
  </dependency>
 </dependencies>
</project>

Step#2: Create the table USER and a Java domain Object User as follows:

Before going to discuss WatchDog & SpotTheBug Approach, let me give a brief context on what is the needs for this.

Three months back I was asked to write core infrastructure code for our new application which uses all the latest and greatest technologies.
I have written the infrastructure code and implemented 2 usecases to demonstrate which logic should go into which layer and the code looks good(atleast to me :-)). Then I moved on to my main project and I was hearing that the project that i designed(from Now on-wards I will refer this as ProjectA) is going well.

Many people know about how RequestDispatcher.forward() and response.sendRedirect() works.

RequestDispatcher.forward() is generally called Server side redirection and is used to forward to a resource within the same application. That resource could be a JSP or another Servlet.

response.sendRedirect() is generally called as Client side redirection as it issues a new request from the browser. This method is used to redirect to another resource within the same application or to the resource in some other application running in the same web container or can redirect to any other resource running in someother web container.

Last week I got to take interviews to hire senior java developers with around 5 years of experience. But after the interview process is over I felt like the frameworks makes developers life easier but at the same time making them dumb.

Everyone puts almost all the new frameworks on their resume claiming they have “Strong, working experience on Spring, Hibernate, Web Services etc”.

Here is how the interviews went on.

If you are a java developer and passionate about technology, you can follow the below things which makes you an outstanding Java developer.

1. Have a strong foundation and understanding on OO Principles

For a java developer having strong understanding on Object Oriented Programming is a must. Without having a strong foundation on OOPS, one can’t realize the beauty of an Object Oriented Programming language like Java. If you don’t have good idea on what OOPS is, eventhough you are using OOP language you may be still coding in procedural way.Just studying OO principles definitions won’t help much. we should know how to apply those OO principles in designing a solution in OO way. So one should have a strong knowledge on Object modeling, Inheritance, Polymorphism, Design Patterns.

Hi All, Welcome folks. This is a blog where you can find tutorials on various Java and JavaEE technologies and can have discussions regarding technical problems and application development-related issues.

I used to blog at https://sivalabs.blogspot.com/, but now moved to https://sivalabs.in.