In this H2 Database Example, we are going to create a simple class that shows how to load the driver, create a database, create table and insert some values into table

H2 is an open source software implementation of Java SQL database. As due to Embedded database it is not used for production deployment, but mostly used for development & testing

The main features of H2 are.

• Very fast, open source, JDBC API
• Embedded and server modes; in-memory databases
• Browser based Console application
• Small footprint: around 1.5 MB jar file size

Reference -> http://www.h2database.com/html/main.html

In this tutorial we are going to test a webservice using embedded Tomcat instance and JUnit. Here we are testing a simple REST service implemented by CXF framework, It works as a standalone application.

Apache CXF And Embedded Tomcat

Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed under the Java Community Process.

Reference -> http://tomcat.apache.org/

In this tutorial we are going to test a webservice using embedded Jetty instance and JUnit. Here we are testing a simple REST service implemented by CXF framework, It works as a standalone application.

CXF Webservice Using embedded Jetty

Jetty provides a Web server and javax.servlet container, plus support for SPDY, WebSocket, OSGi, JMX, JNDI, JAAS and many other integration. These components are open source and available for commercial use and distribution

Reference -> http://www.eclipse.org/jetty/

Add HTTP Headers to a SOAP Request Using CXF explains about step by step details of setting custom http headers to a SOAP Request and retrieve the headers in server side by using CXF.

Message message = PhaseInterceptorChain.getCurrentMessage();
SoapMessage soapMessage = (SoapMessage) message;
List list = soapMessage.getHeaders(); 
for (Header header : list) { 
  System.out.println("Country: "+((Element)header.getObject()).getTextContent()); 
}

On above code, we are getting list of header from SoapMessage

CXF WS-Discovery Client explains step by step details of discovering a JAX-WS service using CXF WS-Discovery feature

For Creating Apache CXF WS-Discovery Client, We are using org.apache.cxf.ws.discovery.WSDiscoveryClient. WSDiscoveryClient is an in built CXF class

Which helps us to search the services on the network and invoke the operation on that available service.

CXF WS-Discovery Example explain about configuring WS-Discovery service with Apache CXF.

Web Services Dynamic Discovery (WS-Discovery) is a protocol, which enable dynamic discovery of services available on the local network. By default, WS-Discovery uses a UDP based multicast transport to announce new services

Apache CXF  is a free and open source project, and a fully featured Webservice framework. It helps you building webservices using different front-end API's, like as JAX-RS and JAX-WS.

WS-Discovery is available from Apache CXF 2.7.x onwards.

Reference-> http://cxf.apache.org/docs/ws-discovery.htm

In this Java ProcessBuilder Example, We are showing how to run external programs and operating system commands with the help of ProcessBuilder.

We can use this java API if your JDK is above 1.5.

Each process builder manages these process attributes:

• command, It is a list of string, each string should be a valid operating system command (see the below example)
• environment, This will returns a copy of the environment of the current process, we are invoked.
• working directory, It's current working directory of the process.
• Input/Output, redirectinput/redirectOutput is for redirecting output to other resources (see the below example)

Reference-> http://docs.oracle.com/javase/7/docs/api/java/lang/ProcessBuilder.html

In this example we are showing How To Display all Months Using Java API

DateFormatSymbols is a public class for encapsulating localizable date-time formatting data, such as the names of the months, the names of the days of the week, and the time zone data. DateFormat and SimpleDateFormat both use DateFormatSymbols to encapsulate this information.

Reference -> http://docs.oracle.com/javase/7/docs/api/java/text/DateFormatSymbols.html

Following are the important methods avaialbe on DateFormatSymbols class