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Tag: java

MapStruct dependency scope in a Maven project

MapStruct generates code at compile-time and it should not require any runtime dependencies: How is MapStruct different from other bean mapping tools? Unlike most other bean mapping tools, MapStruct doesn’t work at runtime but is a compile-time code generator. Generating mapping code at build time has many advantages: Excellent performance, as no reflection or byte code generation at runtime is

Session created by Tomcat

I am learning session with servlets and i read in the book that to create a session we need to call as below. HttpSession session = request.getSession() This causes the web container to create a session ID and send it back to client so that client can attach it with every subsequent request to the server. When i open developer

Constant expression required in Java switch statement

I have ths piece of code in Java but I have this compilation error: Constant expression required Answer The error tells you exactly what is wrong. Case labels must be compile-time constants. This: has a method call, which is not known at compile time (according to the rules for determining what is constant). Is WorkflowKey an enum type? Then you

Removing the integers in the output when inputted with a String [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 7 months ago. Improve this question I am struggling on my code. My prof told us to make a line of code in Eclipse which, when

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