Since then, he has continued to author Java-related books for Apress, including his most recent work entitled Java 9 Recipes. He is an avid contributor to Oracle’s Java Magazine, and he speaks at Java User Gro
try to search for available libraries - many of them have been polished over the years of their existence and are free to use. These could be logging libraries, like logback and Log4j, or network related libraries, like Netty or Akka. Some of the libraries, such as Joda-Time, have become...
The same problem has appeared on our test/stage systems running Linux CentOS 5. The kernel version is 2.6.18-8.1.8.el5 on both servers. Most of the errors have been seen on the slave server running resin-pro-3.1.3. Resin has been very stable up to this point. Most of the propbl...
The Java SE 7 Advanced Platform, available for Java SE Suite, Java SE Advanced, and Java SE Support customers, is based on the current Java SE 7 release. For more information on installation and licensing of Java SE Suite and Java SE Advanced, visit Java SE Products Overview. See the fol...
If this type of OOM is thrown, you might need to use troubleshooting utilities on your operating system to diagnose the issue further. In some cases, the problem might not even be related to the application. For example, you might see this error if: ...
147 . What are the important interfaces related to the Set interface? 148 . What is the difference between Set and sortedSet interfaces? 149 . Can you give examples of classes that implement the Set interface? 150 . What is a HashSet?
Answer:This is again related to double checked locking pattern, well synchronization is costly and when you apply this on whole method than call to getInstance() will be synchronized and contented. Since synchronization is only needed during initialization on singleton instance, to prevent creating an...
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While a programmer selects a method in a file, this refactoring rewrites all of the related files in an entire Java project. Our tool accepts a certain method as its input from the program- mer where we assumed that an object reference is given for each refactoring in Sections 2 and 3....
When moving objects, the parallel collector tries to keep related objects together, resulting in improved memory locality and cache utilization, and leading to improved mutator performance. This is accomplished by copying objects indepth first order. ...