Opinion Miner

http://www.csdn.net/article/2015-11-23/2826304

References: http://stackoverflow.com/questions/676250/different-ways-of-loading-a-file-as-an-inputstream http://www.javaworld.com/article/2077352/java-se/smartly-load-your-properties.html http://stackoverflow.com/questions/3803326/this-getclass-getclassloader-getresource-and-nullpointerexception

http://stackoverflow.com/questions/4340653/file-path-to-resource-in-our-war-web-inf-folder

If it is Maven project.  Add following into the POM file.  <properties>         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>   </properties> Or right click project, select  "Properties  \ Sources \ Encoding" and change to UTF-8 For Netbeans supports UTF-8 in default. You have add following netbeans_default_options = "-J-Dfile.encoding=UTF-8" at a  netbeans.conf  file in you  netbeans installation\etc\ Reference: http://stackoverflow.com/questions/5034891/how-do-you-set-the-encoding-to-utf-8-in-netbeans-6-9

Web framework: Grails, Play, Tapestry, Primefaces, Vaadin Utility: Guava, Joda, Quartz, H2, Camel Backend: Spring, Spring Security, Hibernate, MyBatis, Jooq Unit testing: Mockito, PowerMock, Junit, TestNG, Spock You can check more at http://devrates.com/project/list?query=%5Bjava%5D Original Link: http://www.quora.com/What-are-top-10-most-useful-and-influential-Java-libraries-frameworks

Some confusions for JavaEE 6 http://germanescobar.net/2010/04/4-areas-of-possible-confusion-in-jee6.html

good tutorials http://www.code-thrill.com/2012/05/configuration-that-rocks-with-apache.html http://code-dojo.blogspot.com/2012/04/manage-java-property-files-using-apache.html

refer link:  http://www.javagyan.com/useful-tips/howtocreatethread-safesingleton A singleton class should be designed to ensures that there exists only one instance per application. Special care must be taken if your application is deployed on a clustered environment as in this case it is possible that multiple instance of your singleton class are available in your application.    Here are a few ways to create a thread safe singleton classes in your application.  1) Lazy loading Singleton instance - Using Synchronized method or block public class SingletonClass{     private SingletonClass sc;     private SingletonClass(){}     public static SingletonClass getInstance(){         synchronized(SingletonClass.class) {               if (sc == null) {            ...

The difference http://java.dzone.com/articles/should-i-use-32-or-64-bit-jvm 32 bit compiled program run in 64 bit JVM ? http://stackoverflow.com/questions/783662/java-32-bit-vs-64-bit-compatibility

The error sometimes is caused by Spring and Jackson version issue. The following is the right version.  <properties>         <spring.version>3.2.2.RELEASE</spring.version>         <jackson.version>1.9.10</jackson.version>     </properties>  

http://www.mitbbs.com/article_t/Java/31127601.html

http://www.herongyang.com/Java-Tools/jstack-JVM-Troubleshooting-Tools.html http://javadrama.blogspot.com/2012/02/why-is-java-eating-my-cpu.html

http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html