• 31 July

    Spring Restful client – RestTemplate example

    In this tutorial, we will see how to create rest client using Spring RestTemplate. We have already seen Spring restful web services crud example. We have used postman utility to demonstrate all HTTP methods such as get, post, delete and put but if you want to write java code for restful client , you can […]

  • 29 July

    What is default administrator password for Tomcat?

    When you want to deploy your application to tomcat server , you may do it using admin UI but how can you access it? Do you know default admin password? Actually tomcat does not provide any default password. You need to add users to $TomcatHome/conf/tomcat-users.xml and provide role as manager-gui(For tomcat 7 and 8) and […]

  • 27 July

    How to send HTTP request GET/POST in Java

    In this post, we will see how to send HTTP Get/Post in java. There are many times when you need to send http get or post request. You can use HttpURLConnection for sending get/post request in java. It belongs to java.net package. HttpURLConnection example: We are going to send get or post request to URLs […]

  • 27 July

    Prefix “context” for element “context:component-scan” or “context:annotation-config” is not bound : Spring error

    When you are working on spring or spring mvc application, you may encounter below error message. org.xml.sax.SAXParseException: The prefix “context” for element “context:component-scan” is not bound . or org.xml.sax.SAXParseException: The prefix “context” for element “context:annotation-config” is not bound . This issue generally occurs when you do not include context namespace. For example: Lets say you have below […]

  • 26 July

    How to load multiple Spring configuration files

    In this post , we will see how to load multiple spring bean configuration files. Sometimes, you have multiple spring bean configuration file , you may have different configuration file for service, different for business object. When you are working on complex application, it is not good practice to have only single xml configuration, you […]

  • 25 July

    Spring MVC interceptor HandleInterceptorAdapter example

    Sometimes you need to intercept incoming request and do some preprocessing or you need to do it after completion of request. It is very much similar to filters that we use with servlet. There are two ways to use interceptor with Spring MVC. Spring MVC tutorial: Spring MVC hello world example Spring MVC Hibernate MySQL […]

  • 22 July

    Spring AOP AspectJ Annotation Example

    In this post, we will see Spring AOP AspectJ Annotation examples. If you are not familiar with Spring AOP terminology, you may go through Spring Aspect oriented programming(AOP) tutorial. Following are the AspectJ annotations which we are going to use to implement Spring AOP. @Aspect : To declare a class as Aspect. Annotations which are […]

  • 17 July

    How to create custom exception in java

    In this post, we will see how to create custom exception in java. It is very simple to create custom exception in java. You just need to extends Exception class to create custom exception. Lets understand this with example. You have list of counties and if You have “USA” in list of country, then you […]

  • Spring Interview questions
    16 July

    Spring interview questions and answers for experienced

    In this post, we will see Spring interview interview questions. If you are java/j2ee developer and have some experienced on Spring, you are going to face Spring interview questions. If you are looking for below queries then this post will help you as well. Spring interview questions for 3 years experience Spring interview questions for […]