I am building a simple maven project. I used build path to add json as a third party library and also added it to web-inf library. In the end, i added the dependency in pom.xml. However, with all t...

I don't understand the meaning of the keyword static when I import System class: import static java.lang.System.* I'm reading the book about Java and it's written there: Any import declaratio...

*I am trying to add items to the list view dynamically. But, I am getting a run time exception.Please help. Is there a problem with the global variable "values"? I tried to debug by printing the lo...

I need help with android project inside NetBeans. I Just opened project which is created in NetBeans and I have some issues with "cannot access java.lang Fatal Error: Unable to find package java.l...

I am trying to apply the lessons from reading Java Concurrency In Practice with regards to declaring whether classes that I write are either thread-safe or that they contain unsynchronised mutable ...

I have started reading Joshua Bloch's "Effective Java" (second edition). While reading item 2 (Consider a builder when faced with many constructor parameters), there is a particular statement that ...

Ive a Listner class called TopicS Im trying to call it from a gui called readMessages When Im trying to run the class TopicS using the following method, private void jButton1ActionPerformed(jav...

I have a genericised class that I wish to subclass as follows: public class SomeTable<T extends BaseTableEntry> extends BaseTable<T> { public SomeTable(int rows, int cols) { super...