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This example illustrates how to copy contents from one file to another file. This topic is related to the I/O (input/output) of java.io.File package.
Java.io class represents a file name of the host file system.
The file name can be relative or ...
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Enums are lists of constants like unchangeable variables. Have you heard of Final keyword? It's like that.
When you need a predefined list of values which do represent some kind of numeric or textual data, you should use an enum. For instance, in ...
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If you don't want to use Google Guava's EvictingQueue external dependency in your Java Enterprise Project then you should consider creating your own non-blocking, fixed size queue.
Basically we want avoid java.lang.IllegalStateException: Queue ...
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Setting up Apache Tomcat web server on publicly hosted Linux host is a best way to host your service.
If you want to publish any Java application to world, you need public IP and hence public facing host. Using that you could host your Java ...
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This simple example explains how to iterate through Java Iterator and avoid possible OutOfMemory (OOM) in Java. This post is filed under Java Web Tutorial.
Possible reason: forget to use Iterator.next() inside loop.
Good code: Below example just ...
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In this Java Tutorial we will see how to send an email using GMail SMTP protocol in Java. I'm using JavaMail API v1.6.2. It is very robust solution available in the market.
The JavaMail API provides a platform-independent and protocol-independent ...
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On 19th March 2019 Java12 was released. As we know Java12 was part of rapid release, it was released just in 6 months after Java11 release.
In this tutorial, we will go over all changes and new features about Java12.
Personally I switched to ...
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So far for me it it was so easy to right click in Eclipse IDE and create executable .jar file with few simple clicks. Last week I had to create executable .jar file manually on my Digital Ocean node on which we hosts usually lots of services.
It ...
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Are you getting below exception while running ElasticSearch?
[crayon-5d58078044b55700700696/]
Why is it ElasticSearch is not allowed to run as root?
Elasticsearch is a process, which I believe has not need to access any system root features and ...
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