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Build Wine rpm with 32 bit application support

Wine is a software to allow running Windows applications in Linux, MAC etc. platforms. It is available for installation from package managers like yum (RHEL, CentOS) and apt (Ubuntu). You can find more details on how it works in Wine wiki . But the default Wine package available from package manager does not have support for 32 bit Windows applications. This was the case for me. In Redhat Enterprise Linux 7.3, the wine package did not contain support for 32 bit windows applications. So the only option was to build a separate rpm of wine which will include this support. All the steps are executed on a RHEL 7.3 VM (x86_64). Step 1 Download and run shell script which will make wine 64 and 32 support for RHEL: https://github.com/zma/usefulscripts/blob/master/script/install-wine-i686-centos7.sh It accepts a version no. as CLI parameter e.g. 2.0.3 The script installs wine in /usr/local/ directory by default. We can verify the files that are being copied for wine using "...
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A simple REST based web service

REST stands for Representational State Transfer. Roy Fielding, the father of HTTP protocol, had coined the term in his doctoral thesis. REST is not a software, rather it is a concept or an architecture. The biggest use of REST architecture is in WWW (World Wide Web). The services that conforms to REST standard are termed as RESTful services. REST based services contain a client and a server. The server contains resources that can be represented by various states. A client initiates the request to server when it is ready to transition it's state. The server responds with the required state. The REST based web service is quite popular now. This type of web service is called RESTful web service. In RESTful web service we represent a service by an URI. Common HTTP methods are used to request for a specific state transfer. Create PUT Update POST Read GET Remove DELETE I have used an open source java library called Jersey  for creating this simple RESTful web service. ...
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Write your first JAXWS web service

Today I'll try to explain how easily one can build a JAX-WS web service. Web Services are very popular now-a-days. They are used every where. But I found it difficult to write my first web service with jax-ws, partly because I was trying myself and partly because I could not get a simple explanation of steps. That is why I'll try to show the simplest web service possible using jaxws. First thing first, what do you need to build your first jax-ws web service. JDK 1.6 (I used update 23) Eclipse IDE (you can use some other IDE as well) Are you kidding? nothing else. JAX-WS 2.0 is actually Sun's (now Oracle) reference implementation of Web Service stack. It is bundled with JDK 6 and above. First you need to create a Java project in Eclipse. Then create a class called com.ws.HelloService . This will be our web service class. Have a public method in this class which will be exposed as web service. Below is the code - The catch here is the @WebService annotation. Thi...
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Strings in Switch statements - a new JDK 7 feature

JDK 7 is the next release of Java language. There are lot of expectations from this release. For the first time Java is being modeled outside Sun Microsystems. Now JDK 7 has got a net host, openJdk community. There are quite a few features planned in JDK 7. Some of them may prove to be a milestone for Java language. But my personal liking is a very small feature rather project called Project Coin . Coin serves to add small language features to Java which will make programmer's life easy. The JavaOne 2010 presentation for Project Coin lists the following features as accepted ones in JDK 7 time frame. Binary literals and underscores in literals Strings in switch Varargs warnings Diamond Multi-catch and more precise rethrow try-with-resources (formerly known as Automatic Resource Management, ARM) Out of these features, the most attractive to me was "Strings in switch". This is something I've longed for from my college days. I mean, though it was not Java (it...
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