I’m pretty sure “-” is the standard. If you see “_” somewhere it’s probably something some people came up with to make it a valid identifier. Personally I’d go with “-“, just to be correct. http://en.wikipedia.org/wiki/IETF_language_tag
This answer describes the process of retrieving the stack trace. Already have the stack trace? Read up on stack traces in “What is a stack trace, and how can I use it to debug my application errors?“ The Problem Your application quit because an uncaught RuntimeException was thrown.The most common of these is the NullPointerException. How to solve … Read more
My problem solved, path didn’t resolve %M2%. When i added location of maven-bin in the path instead of %M2% after that commands works. I would like to thanks to all those who try to solve the problem
If you’re on the main display, then or if you’re using csh or tcsh before running your app. Actually, I’m surprised it isn’t set automatically. Are you trying to start this application from a non-graphic terminal? If not, have you modified the default .profile, .login, .bashrc or .cshrc? Note that setting the DISPLAY to :0.0 … Read more
ArrayList in java and list in python are both dynamic arrays. They both have O(1) average indexing time and O(1) average adding an element to the end time. Array in java is not tuple in python. While it is true that you cannot add elements to both data structures. Python tuple does not support assignment, that is you cannot reassign individual elements in a tuple, … Read more
Here’s one suggestion: Because of type erasure any class will only be able to implement one of these. This eliminates the redundant method at least. It’s not an unreasonable interface that you’re proposing but I’m not 100% sure of what value it adds either. You might just want to use the standard Callable interface. It doesn’t support … Read more
Use a DecimalFormatter: Will give you “0.99”. You can add or subtract 0 on the right side to get more or less decimals. Or use ‘#’ on the right to make the additional digits optional, as in with #.## (0.30) would drop the trailing 0 to become (0.3).
As far as I can see you have the JRE in your PATH, but not the JDK. From a command prompt try this: Then try javac again – if this works you’ll need to permanently modify your environment variables to have PATH include the JDK too.
Use or since Java 1.7
A @RequiredArgsConstructor will be generated if no constructor has been defined. The Project Lombok @Data page explains: @Data is like having implicit @Getter, @Setter, @ToString, @EqualsAndHashCode and @RequiredArgsConstructor annotations on the class (except that no constructor will be generated if any explicitly written constructor exists).