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The Latest Java Topics

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Java HashMap Search and Sort
A HashMap has plenty of uses, so let's see how you can find keys and values, load data from a CSV file into one, and use it for sorting.
March 16, 2017
by Jay Sridhar
· 83,895 Views · 27 Likes
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Dealing With Java's LocalDateTime in JPA
Trying to persist Java 8 LocalDateTime with JPA can produce surprising results. To prevent this, we need a special converter present on the classpath.
March 16, 2017
by MD Sayem Ahmed
· 89,193 Views · 25 Likes
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Java Inside Docker: What You Must Know to Not FAIL
If you've tried Java in containers, particularly Docker, you might have encountered some problems with the JVM and heap size. Here's how to fix it.
March 16, 2017
by Rafael Benevides
· 44,795 Views · 73 Likes
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Java: Interface vs. Abstract Class
How to characterize concrete classes using abstract classes and interfaces in Java.
March 14, 2017
by Daniel Meyer
· 64,236 Views · 32 Likes
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Logging to Database Using Log4J in MuleSoft
By making some changes, appending some properties to log4j.xml, and using custom Java code to connect to the database, we can make logging to a database possible.
March 14, 2017
by Surya Satya Kumar Uppuluri
· 10,574 Views · 2 Likes
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How to Crash the Java Virtual Machine With a Race Condition
A look at what kind of errors you'll see if the JVM crashes thanks to using race conditions.
March 14, 2017
by Thomas Krieger
· 19,083 Views · 8 Likes
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How to Convert CSV to JSON in Java
CSV data can be converted to JSON via a POJO using Jackson or, if a POJO is not defined or required, you can use the Java Collection classes.
Updated March 13, 2017
by Jay Sridhar
· 194,765 Views · 18 Likes
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Consuming SOAP Web Services Using Mule
All you need to consume a SOAP-based public web service from Mule Anypoint Studio is a WSDL to locate the SOAP-based web service.
March 13, 2017
by Danish Sheikh
· 50,538 Views · 7 Likes
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Invoke Java Functions in Your DataWeave Transformation and Mule Flow
DataWeave is a language used to query and transform complex data. It is very much so possible to invoke Java/Groovy functions within DataWeave.
March 12, 2017
by Jitendra Bafna
· 26,692 Views · 4 Likes
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Reading Text from Images Using Java
We take a look at some code that can help you to read text from an image with your Java application. Possible uses? Making sure your Captcha is doing its job.
March 10, 2017
by Anurag Jain
· 108,970 Views · 28 Likes
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How to Trigger a Mule Flow From Java
Triggering a Mule flow or a sub-flow by sending it a message payload and then using the response payload for your further processing is pretty straightforward.
March 9, 2017
by Harish Kumar
· 10,791 Views · 7 Likes
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ConcurrentHashMap in Java 8
This overview of ConcurrentHashMap covers its use in parallel programming and the various methods you can implement to make use of it.
March 9, 2017
by Arun Pandey DZone Core CORE
· 88,186 Views · 40 Likes
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Monitoring Out-Of-Memory Errors in Your Servers
Out-of-memory errors happen when your machines run into very low memory somehow. There are a lot of things you can do to avoid OOM.
March 7, 2017
by Denny Zhang
· 11,143 Views · 4 Likes
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Calling a Java Method From XSLT in Mule
The Xalan extension in our XSL file can call any Java method and get the value returned to it—which it can use to fill any node or attribute value.
March 7, 2017
by Anirban Sen Chowdhary
· 15,100 Views · 4 Likes
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Benchmarking Java Lists Performance
LinkedList is slightly slower than ArrayList with adding items to the end of the list. It is also slower when retrieving items with an index (random access).
March 7, 2017
by Jay Sridhar
· 21,918 Views · 10 Likes
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ChartistJSF: A Responsive Chart Library for Java Server Faces (JSF) Apps
ChartistJSF offers a wonderful library of interactive charts that offer a responsive interface for your users. Learn how to create these charts here!
March 6, 2017
by Sam Sepassi
· 21,388 Views · 5 Likes
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Using sun.misc.Unsafe in Java 9
This quick guide will take you through Unsafe in Java 9, saved from the trash heap by a public campaign, all while using the recent Java 9 EA release.
March 6, 2017
by Greg Luck
· 29,043 Views · 11 Likes
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Custom Annotation in Java for SQL Injection Safe Parameters
How to verify if incoming data strings are safe from SQL Injection issues.
Updated March 3, 2017
by Ramakrishna Punjal
· 44,948 Views · 20 Likes
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Invoke Java Method in Mule Flow
By using the Invoke component, we can invoke a specified method of an object defined in a Spring Bean. Mule has a strong ability to do this.
March 3, 2017
by Harish Kumar
· 36,939 Views · 7 Likes
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This Week in Spring: Spring 5, Spring Cloud, and Reactor Aluminium
In this installment of This Week in Spring, we'll look at the new milestone of Spring 5, Reactor Aluminium and even more Spring Cloud capabilities.
March 2, 2017
by Josh Long
· 11,939 Views · 5 Likes
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