How to fix “vt-x is disabled in the bios” error?

If you face the “vt-x is disabled in the bios” error while trying to run Android emulator, here is the solution that worked for me. Step 1: Enable Virtualization Technology in BIOS Go to BIOS Setup and enable “Virtualization Technology” option. On my Lenovo laptop this option was already enabled, but still getting this error. I have disabled it and re-enabled it, then it is working. Step 2: Install HAXM Installer from Android SDK Manager Start the Android SDK Manager, select Extras -> Intel x86 Emulator Accelerator (HAXM Installer) and install it.

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My New Book SpringBoot : Learn By Example Published Today

I am happy to announce that my new book SpringBoot : Learn By Example got published today on Leanpub. SpringBoot : Learn By Example   What is SpringBoot? Spring is one of the most popular Java frameworks out there to build web and enterprise application. Spring supports variety of configuration approaches (XML, Annotations, JavaConfig etc) and properly configuring Spring applications become a bit tedious and repetitive process. To avoid these problems Spring team introduced SpringBoot to address the complexity of configuring Spring application.

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My Review of Sanjay Patel’s Spring Course

Spring is the most popular Java framework for building web and enterprise applications. There are plenty of official documentation, books, and Training Courses available for Spring framework on web. I got an opportunity to review Sanjay Patel‘s Spring Course Material which is divided into 3 modules. http://www.naturalprogrammer.com/spring-tutorial/ The total course is divided into 3 modules covering various aspects of web application development using Spring/SpringBoot framework. Module I : Spring Framework 4 And Dependency Injection For Beginners Module II : Spring Framework for the Real World Module III : Spring Framework REST API Development Module I: Spring Framework 4 and Dependency Injection For Beginners

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Creating Custom SpringBoot Starter for Twitter4j

SpringBoot provides lot of starter modules to get up and running quickly. SpringBoot’s auto-configure mechanism takes care of configuring SpringBeans on our behalf based on various criteria. In addition to the springboot starters that comes out-of-the-box provided by Core Spring Team, we can also create our own starter modules. In this post we will look into how to create a custom SpringBoot starter. To demonstrate it we are going to create twitter4j-spring-boot-starter which will auto-configure Twitter4J beans.

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SpringBoot : Working with JOOQ

In my previous article SpringBoot : Working with MyBatis we have learned how to use SpringBoot MyBatis Starter to quickly get up and running with Spring and MyBatis. In this article we are going to learn about how to use SpringBoot JOOQ Starter. JOOQ (JOOQ Object Oriented Querying) is a persistence framework which embraces SQL. JOOQ provides the following features: Building Typesafe SQL using DSL API  Typesafe database object referencing using Code Generation  Easy to use API for Querying and Data fetching  SQL logging and debugging

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SpringBoot : Working with MyBatis

MyBatis is a SQL Mapping framework with support for custom SQL, stored procedures and advanced mappings. SpringBoot doesn’t provide official support for MyBatis integration, but MyBatis community built a SpringBoot starter for MyBatis.  You can read about the SpringBoot MyBatis Starter release announcement at http://blog.mybatis.org/2015/11/mybatis-spring-boot-released.html and you can explore the source code on GitHub https://github.com/mybatis/mybatis-spring-boot. Create a SpringBoot Maven project and add the following MyBatis Starter dependency. <dependency> <groupId>org.

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SpringBoot : Working with JdbcTemplate

Spring provides a nice abstraction on top of JDBC API using JdbcTemplate and also provides great transaction management capabilities using annotation based approach. First let’s take a quick look at how we generally use Spring’s JdbcTemplate (without SpringBoot) by registering DataSource, TransactionManager and JdbcTemplate beans and optionally we can register DataSourceInitializer bean to initialize our database. @Configuration @ComponentScan @EnableTransactionManagement @PropertySource(value = { "classpath:application.properties" }) public class AppConfig { @Autowired private Environment env; @Value("${init-db:false}") private String initDatabase; @Bean public static PropertySourcesPlaceholderConfigurer placeHolderConfigurer() { return new PropertySourcesPlaceholderConfigurer(); } @Bean public JdbcTemplate jdbcTemplate(DataSource dataSource) { return new JdbcTemplate(dataSource); } @Bean public PlatformTransactionManager transactionManager(DataSource dataSource) { return new DataSourceTransactionManager(dataSource); } @Bean public DataSource dataSource() { BasicDataSource dataSource = new BasicDataSource(); dataSource.

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How SpringBoot AutoConfiguration magic works?

In my previous post Why SpringBoot? we have looked at how to create a SpringBoot application. But you may or may not understand what is going on behind the scenes. You may want to understand the magic behind the SpringBoot’s AutoConfiguration. But before that you should know about Spring’s @Conditional feature based on which all the SpringBoot’s AutoConfiguration magic depends. Exploring the power of @Conditional While developing Spring based applications we may come across of a need to register beans conditionally.

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Why SpringBoot?

Spring is a very popular Java based framework for building web and enterprise applications. Unlike many other frameworks which focuses on only one area, Spring framework provides a wide verity of features addressing the modern business needs via its portfolio projects. Spring framework provides flexibility to configure the beans in multiple ways such as XML, Annotations and JavaConfig. With the number of features increased the complexity also gets increased and configuring Spring applications becomes tedious and error-prone.

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Retrying Method Execution using Spring AOP

One of my blog follower sends an email asking me to show an example of “RealWorld Usage of Spring AOP”. He mentioned that in most of the examples the usage of Spring AOP is demonstrated for logging method entry/exit or Transaction management or Security checks. He wanted to know how Spring AOP is being used in “Real Project for Real Problems”. So I would like to show how I have used Spring AOP for one of my project to handle a real problem.

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