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Convert Seconds to Hours, Minutes and Seconds in Java

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Today i have written a program to convert seconds into hours, minutes and seconds in java.  Any one can easily understand this program and implement in their web application without any difficulties. Definitely it is more usefull for those who are working on date/time related functionalites. Lets start understanding the example carefully.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnmKzBqY91QQXX08ZbLgj-IeA2iGatkXLQe02jwcsODVmCloRsX9_nd7eRW1HUmqrdr33tdMHSYl9ib3U3wdWeo5mkQR9SkoGLeDD7BbmAFQZDPo8lhajX6c1-mhSXGFQCNDsx9Z8rKoI/s1600/convet.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="337" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnmKzBqY91QQXX08ZbLgj-IeA2iGatkXLQe02jwcsODVmCloRsX9_nd7eRW1HUmqrdr33tdMHSYl9ib3U3wdWeo5mkQR9SkoGLeDD7BbmAFQZDPo8lhajX6c1-mhSXGFQCNDsx9Z8rKoI/s400/convet.png" width="400"></a></div>
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Convert Seconds to Hours, Minutes and Seconds in Java

Today i have written a program to convert seconds into hours, minutes and seconds in java. Any one can easily understand this program and...

Java 8 String Joiner Usage

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In every programming language and in many applications developers have to put together list of values, frequently these are comma delimited lists but they can also incorporated with other string separators. Java SE 8 has two new utils for this one is StringJoiner class and another static method of string class name join which are newly introduced in Java 8 using these features we can easily concatenate or add strings and also contains so many uses. Now we are going to have discussion on this topics.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCncTaS7Hd_0-mrAN81wiybK7jlGXG_Qk_UYXRBPiHScb7xERhyjDPz77IZKh1N1F3ATxDT1i0VOucCn7FxfD5JfpF50WnWgVQ_pkvCKn2XkTSEAIrzC6Sz4LxasUbR2pp-vJVedrY-6w/s1600/logo.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="String Joiner" border="0" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCncTaS7Hd_0-mrAN81wiybK7jlGXG_Qk_UYXRBPiHScb7xERhyjDPz77IZKh1N1F3ATxDT1i0VOucCn7FxfD5JfpF50WnWgVQ_pkvCKn2XkTSEAIrzC6Sz4LxasUbR2pp-vJVedrY-6w/s400/logo.png" title="" width="400"></a></div>
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Java 8 String Joiner Usage

In every programming language and in many applications developers have to put together list of values, frequently these are comma delimite...

New Date & Time API in Java 8 Example

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We are going to discuss about new Java 8 API  today. In the recent release of Java 8, new Date and Time API was introduced. It supports ISO (International Organization for Standardization) calendar system. It also supports commonly used global calendars. Let’s quickly get into the example</div>
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New Date & Time API in Java 8 Example

We are going to discuss about new Java 8 API today. In the recent release of Java 8, new Date and Time API was introduced. It supports IS...

How to Run Javascript in Java Using Nashorn

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Java 8 is a major release for the java programming language and java virtual machine. It includes many changes in that we are going to discuss about nashorn javascript engine example. Java se 8 provided a brand new library JavaScript engine named nashorn. Nashorn is completely new engine. It can used from command line or directly in your java code. This is entirely written from scratch. Let you write JavaScript code using java classes and objects. </div>
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<b>How to use Nashorn from command line</b></div>
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If you are working on windows first open the command prompt type jjs now we can see the jjs prompt appear and now you can start typing javascript code.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiD2Y0lZTchPDZZveAS18odMxN3iUk9byKTdBlTAWc-crAmwFYuYW76n-YeFV1WSOEMmcH4Ma3ZOpoOZt0BJxxMaR99EinSdQmFlRCW6tStg-ql2LNQUc_dSvD70HV-I3ZA3o4Z6IAp60E/s1600/1.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="Nashorn from command line" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiD2Y0lZTchPDZZveAS18odMxN3iUk9byKTdBlTAWc-crAmwFYuYW76n-YeFV1WSOEMmcH4Ma3ZOpoOZt0BJxxMaR99EinSdQmFlRCW6tStg-ql2LNQUc_dSvD70HV-I3ZA3o4Z6IAp60E/s1600/1.PNG" title=""></a></div>
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<span style="text-align: justify;">If you want to read some content from remote server first copy the url from the browser and copy into the java.net.URL class. Please check the below code</span><br>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1__kAyX9BXJnZtNU_c8Np6c7E7UPZ4EyW6cVQbehOmc4EeIma8Ismbhnlh9EKhJ1RLxqHWwKiH5TC-PilakwnbC-fK5fd8RYIx-zF0GB-0y9JXlNSzOq7bN4L4BuBe0joLlTqBXla-TE/s1600/2ong.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="java 8 nashorn engine example" border="0" height="176" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1__kAyX9BXJnZtNU_c8Np6c7E7UPZ4EyW6cVQbehOmc4EeIma8Ismbhnlh9EKhJ1RLxqHWwKiH5TC-PilakwnbC-fK5fd8RYIx-zF0GB-0y9JXlNSzOq7bN4L4BuBe0joLlTqBXla-TE/s1600/2ong.PNG" title="" width="640"></a></div>
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How to Run Javascript in Java Using Nashorn

Java 8 is a major release for the java programming language and java virtual machine. It includes many changes in that we are going to dis...

How to Connect XenServer and Operating VM Using Java

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At the time of final year project in MCA we have done a challenging project on citrix xenserver. Initially we did research and learn about virtualization, xenserver and xen java API concepts later we decided to do a web based project and named as xenserver management on cloud computing. We developed a web console to interact with xenserve and performing various operations on it. In our project we did different modules like establishing connection with  xenserver, getting the xenserver version, vm creation, VM destroy  and virtual machine life cycle. Life cycle is nothing but VM start, stop and reboot.</div>
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It is difficult to explain all modules so I will cover most useful functionality how to connect xenserver using java and VM life cycle using java. Don’t be confuse VM is called as virtual machine and it a guest operating system. In below video demo we can watch complete practical part like how to create web project, adding xen API jars in project, configuring apache tomcat server etc.</div>
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<span style="color: #990000;"><b>Screenshots</b></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioItvVQH2nMCGYQGkvZAeTamgLO_n0gsXeeKb9P20gboBObHaHKkiwLKN6VBNl-ISIsWmEs7oeW6S66DV2SSUYYfVJ-mkqm3z-tBI4-2ZlwYT60cm_qiCPkQZn4Jk4Ihvjcn5paxCUPAc/s1600/vlcsnap-2014-12-29-07h58m24s200.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="xenserver project connection page" border="0" height="278" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioItvVQH2nMCGYQGkvZAeTamgLO_n0gsXeeKb9P20gboBObHaHKkiwLKN6VBNl-ISIsWmEs7oeW6S66DV2SSUYYfVJ-mkqm3z-tBI4-2ZlwYT60cm_qiCPkQZn4Jk4Ihvjcn5paxCUPAc/s1600/vlcsnap-2014-12-29-07h58m24s200.png" title="" width="640"></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5c9J_vEnbfNHE9ybmsnSsGxyjdWaKq_w2yOaDLv3-DJFR86K0XQ8xyrURK7HoosnqC80atlfQlFW4F34lwabW1EU4xWdsBUob_tRTcSqrwwH-fGiaFHn-TJMunNxpfTkBBf-JzsTVxjk/s1600/shot.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="vm life cycle image" border="0" height="299" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj5c9J_vEnbfNHE9ybmsnSsGxyjdWaKq_w2yOaDLv3-DJFR86K0XQ8xyrURK7HoosnqC80atlfQlFW4F34lwabW1EU4xWdsBUob_tRTcSqrwwH-fGiaFHn-TJMunNxpfTkBBf-JzsTVxjk/s1600/shot.png" title="" width="640"></a></div>
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How to Connect XenServer and Operating VM Using Java

At the time of final year project in MCA we have done a challenging project on citrix xenserver. Initially we did research and learn about...

Java 8 Lambda Expressions Example

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Lambda expressions in java are used to instantiate a class with single abstract method in more compact way. We can write the less code using anonymous class concept rather than defining a new class or by using an inner class. Suppose the thread programming in java using Runnable interface can be implemented in many ways. We can define a new class that implements the Runnable interface and then override the run method or by using Inner class concept or by using anonymous class concept like.<br>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7wwTZpdFVEiEg2QxsdmHlgSPGvFVKKnO-YXc9G4kqIb9-PNIuTrtpZ9hP_LvyOYm0R1pUU0E7kgEtP8zrABF8Pql2MPEWjc58_BNbT-KsQiAndwJLa4taaHoirzn3q4UvP3Lq3v14FjM/s1600/2+copy.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="java8 lambda expression" border="0" height="228" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7wwTZpdFVEiEg2QxsdmHlgSPGvFVKKnO-YXc9G4kqIb9-PNIuTrtpZ9hP_LvyOYm0R1pUU0E7kgEtP8zrABF8Pql2MPEWjc58_BNbT-KsQiAndwJLa4taaHoirzn3q4UvP3Lq3v14FjM/s1600/2+copy.png" title="" width="400"></a></div>
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Java 8 Lambda Expressions Example

Lambda expressions in java are used to instantiate a class with single abstract method in more compact way. We can write the less code usi...

How to Find Java Memory Leaks using VisualGC

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Today, I like you to know about VisualGC tool which is helpful to find Java Memory Leaks. It is tool related to JVMSTAT technology which became part of Visual VM introduced in Java 8. Before we go into the actual topic, let’s start a meaningful discussion. We grownup comparing benefits between the two popular programming languages named C and Java. Java addresses major concerns of programmers, particularly when they do memory management. This is the reason why all we assume that there is no room to take care of certain things. The beauty of Java is to make us free on workload of taking care of allocating and freeing memory. Which is not the case with C. In Java, garbage collector takes care of the things whereas in C it’s up to the programmer. </div>
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Coming to the point, it’s obvious there is a memory leak concern for you in the program if you see java.lang.OutOfMemoryError after your program executes for a while. To be a perfectionist, one needs to make sure their code is memory leak free. This requires investigation and correction of the code once they written. </div>
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In some cases, you can get on with the code causing memory leak.  This is because of the fact that all allocated memory is returned to the operating system after Java application and its JVM is closed. Which is not the case with C++.</div>
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In order to identify a memory leak we tend to use Task Manager Utility. This might not help us. There are memory debugging utilities which helps us to identify a memory leak.</div>
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Let’s analyze the possible error messages first:-</div>
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java.lang.OutOfMemoryError: Java heap space</div>
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java.lang.OutOfMemoryError: PermGen space</div>
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java.lang.OutOfMemoryError: Requested array size exceeds VM limit</div>
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java.lang.OutOfMemoryError: <any> </div>
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Most common message displayed for memory leak is java.lang.OutOfMemoryError error. But not all java.lang.OutOfMemoryError error messages are due to memory leaks.</div>
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For Example:</div>
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One day, I got into trouble with eclipse showing OutOfMemoryError error. By default, eclipse uses 256 MB PermGenSpace for the application. If you can open Configuration file with extension .INI of eclipse you will find that. Increasing that size resolved the problem for me.</div>
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From this we know that it’s not the application error. It’s a configuration problem for the application showing OutOfMemoryError error.</div>
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Understanding Eclipse IDE will help a developer to deal with all sort of problems. That’s a different ball game all together.</div>
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Remember understanding JVM working will surely help us. Our concentration here in this article is to know about debugging tool that helps us to identify memory leaks.</div>
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With the release of Java 8 it’s obvious that we need to learn the VisulaVM tool which is provided with the JDK. This also helps us to know the performance issues with the code and fix them.</div>
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Let’s look at technology called <b>jvmstat</b> first. Folks, understand that no use diving into the sea to find more without mastering this drop in the hand.</div>
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Visit the following link. Click on the download link and download zip folder.</div>
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<b>http://www.oracle.com/technetwork/java/jvmstat-142257.html</b></div>
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Extract the zip folder named <b>jvmstat</b></div>
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Place that folder as you saw in below picture (C Drive). Check the folders are as shown in the picture before moving forward.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7HfVy9W_IrlkCQ0yGrPDSIb5YzpfKZ5y0wlp7O904DLCIILa1air45-NPwT_5-sJe-P422FNavElyGQCac_4lSEBojkO3E0oNZljKvaCXZp4sDo5Dx57H-P_PhLQyDp9KGMzLKnGjpJk/s1600/11.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="305" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj7HfVy9W_IrlkCQ0yGrPDSIb5YzpfKZ5y0wlp7O904DLCIILa1air45-NPwT_5-sJe-P422FNavElyGQCac_4lSEBojkO3E0oNZljKvaCXZp4sDo5Dx57H-P_PhLQyDp9KGMzLKnGjpJk/s1600/11.PNG" width="640" /></a></div>
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Before proceeding set the environment variables as shown below. </div>
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Make sure you add this <b>“C:\Program Files(x86)\Java\jdk1.7.0_40\bin;.”(Without double quotes)</b> to the existing PATH variable</div>
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Then add the following environment variables,</div>
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Variable name: <b>Java_Home</b></div>
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Variable value: <b>C:\Program Files(x86)\Java\jre7</b></div>
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Variable name: <b>JVMSTAT_JAVA_HOME</b></div>
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Variable value: <b>C:\Program Files(x86)\Java\jdk1.7.0_40</b></div>
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If you are using 64-bit operating system. Notice that <b>Program Files(x86)</b> is equivalent to <b>Progra~2</b>. Don’t confuse between the two. You can use any of those whenever it’s required.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLzL3-yVGay_xdwO0CjPtSosw0qrAM1QoXOeKRjvTI8s_jk_M3211IKL_jOVpybwMdDGmCef0r3olGKixpcYV3N4s95GdAYcLoVOt0XH7F1KwbkLFpkAVDrkmT3D6Ydha_uAVMVuutyZo/s1600/2.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="372" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjLzL3-yVGay_xdwO0CjPtSosw0qrAM1QoXOeKRjvTI8s_jk_M3211IKL_jOVpybwMdDGmCef0r3olGKixpcYV3N4s95GdAYcLoVOt0XH7F1KwbkLFpkAVDrkmT3D6Ydha_uAVMVuutyZo/s1600/2.PNG" width="640" /></a></div>
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<b>Step 1:</b></div>
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Type the following command in the command prompt</div>
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SET PATH= C:\jvmstat\bat;C:\jvmstat\bin;C:\jvmstat;%PATH%</div>
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%PATH% - This make sure the existing path setting for the variable name Path doesn’t get disturbed.</div>
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<b>Step 2:</b></div>
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Paste the following line in the notepad and save it as jstatd.policy in root of C Drive. Please make sure you put “jstatd.policy” (in double quotes) while saving. </div>
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grant codebase "file:${java.home}/../lib/tools.jar" {     permission java.security.AllPermission; };</div>
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Note: If it’s not permitted to save in root of C drive. Save it somewhere else and then copy and paste to the root of the C drive. This worked for me.</div>
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<b>Step 3:</b></div>
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Type the following command as shown below</div>
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<b>jstat -gcutil 0 1000 3</b></div>
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Before running the following command you need to download java2demo.jar by googling.</div>
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I placed it in the path e:\demo\jfc\Java2D\ as shown in the above image. </div>
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Type the following command as shown below</div>
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 java –jar e:\demo\jfc\Java2D\java2demo.jar<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEguJ319NUdY40EffWqRvLRFIPcbmp_hhgIYhnDLtNmGF9uhNHSH1_ox77Y4FHxkMwyExl460AJLxQrBS45Ji9RPiWX6pKbC2TIdVmv-1jeOxfR8dRQ9ft6J5ZJTf4V9nPH0vWhaRYlwtZ0/s1600/3.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="186" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEguJ319NUdY40EffWqRvLRFIPcbmp_hhgIYhnDLtNmGF9uhNHSH1_ox77Y4FHxkMwyExl460AJLxQrBS45Ji9RPiWX6pKbC2TIdVmv-1jeOxfR8dRQ9ft6J5ZJTf4V9nPH0vWhaRYlwtZ0/s1600/3.PNG" width="640" /></a></div>
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You will see an application running playing music.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEht8D6Ry1OsxJwX7VKYJuRKWhA4wF2-LQ5k2E4oIXDoYQ1atky3oHVpu4YWAAmU2tvtfBlKw_oTl6xGQflBtK6_74OpqfRiON-KkEfe1i_SHlunWnOjLN79fWdhA-YYJhroZBdygfyuRS4/s1600/4.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="416" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEht8D6Ry1OsxJwX7VKYJuRKWhA4wF2-LQ5k2E4oIXDoYQ1atky3oHVpu4YWAAmU2tvtfBlKw_oTl6xGQflBtK6_74OpqfRiON-KkEfe1i_SHlunWnOjLN79fWdhA-YYJhroZBdygfyuRS4/s1600/4.PNG" width="640" /></a></div>
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<b>Step 4:</b></div>
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Now, take another instance of command prompt and type the following commands.</div>
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<b>jps</b><br />
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<b>SET PATH=C:\jvmstat\bat;%PATH% </b>(We are setting this path to make sure visualgc command works for us. In the sense, we are telling where locate visualgc bat file for the system)</div>
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<b>jstat –gcutil</b> 6436 <b>1000 3</b> (You can notice in the below figure 6436 is the lvmid given as input)</div>
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<b>visualgc </b>6436 (See figure to know about input 6436 given)<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjF66gwDF9DBzyMA5mjkGU7yXvWj4_l4DXlvMIGzYfflzU_N7VFzVLsEA8kvLaegiO3KDrWwF_QQ60aP-WKhxquwvjDz-EApMNjx6jEd24fGg0DbTcskiPp3T2hvWZVtxfHl_Zf6kIjCcg/s1600/5.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="246" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjF66gwDF9DBzyMA5mjkGU7yXvWj4_l4DXlvMIGzYfflzU_N7VFzVLsEA8kvLaegiO3KDrWwF_QQ60aP-WKhxquwvjDz-EApMNjx6jEd24fGg0DbTcskiPp3T2hvWZVtxfHl_Zf6kIjCcg/s1600/5.png" width="640" /></a></div>
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Here the output as shown in the following figure</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnHOZPqZcbcT7kFKLcoI2pSiaa-57bvWwP3VbPNNYb1Q2xaC9OIq0VKSBkQP1BYnsSJ6wnzU5ttFVORubt4Ry9uxvXcaDmXt0oUO4TnraduJB0c8eTFGQZZWY4jmKiwC8OlsAdL0_7EDw/s1600/6.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img alt="VisualGC 3.0" border="0" height="428" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnHOZPqZcbcT7kFKLcoI2pSiaa-57bvWwP3VbPNNYb1Q2xaC9OIq0VKSBkQP1BYnsSJ6wnzU5ttFVORubt4Ry9uxvXcaDmXt0oUO4TnraduJB0c8eTFGQZZWY4jmKiwC8OlsAdL0_7EDw/s1600/6.png" title="" width="640" /></a></div>
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That’s it. I am done. This article helps you to understand jvmstat technology/VisualGC utility. Which is the building block to understand VisualVM. Extend your knowledge on this. Stay tuned for more.</div>
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  <v:f eqn="prod @7 21600 pixelWidth">
  <v:f eqn="sum @8 21600 0">
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  <v:f eqn="sum @10 21600 0">
 </v:f></v:f></v:f></v:f></v:f></v:f></v:f></v:f></v:f></v:f></v:f></v:f></v:formulas>
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</div>

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How to convert NetApp MOF file to Java Bean

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<br></div>
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NetApp Storage Device</div>
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<br></div>
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SMI-S Support</div>
<b>Introduction:</b><br>
<br>
Initially, EMC is the leading market player providing remote infrastructure management devices. Later, NetApp came up with an idea to solve scratch level problems with storage devices. As the trend goes on, with the initiation of SNIA organization, Storage Management Initiative Specification (SMI-S) which provides vendor neutral platform to manage storage devices.<br>
</div>

How to convert NetApp MOF file to Java Bean

NetApp Storage Device SMI-S Support Introduction: Initially, EMC is the leading market player providing remote infrastructure m...