Issue with the Constructor in own JAVA based Libraries

f41ardu

Successfully managed the library template 3.0,2 integration into Eclipse (Win 8.1). Managed to build the example.

But I run in trouble while creating a library on my own.
This "The constructor MYClass(....) is undefined message" issue.

What have to be considered while creating the MyClass.java file. I used the HelloLibrary.java to start with.

As a workaround I again start with the example and step by step I remove code and add my own code (after renaming the necessary parts in the entire template). This seems to be OK, but I did on the first approach, too.

Are there better examples simple enough to get an understanding but with more comples Constructors? Or what is the prerequesite for a well defined Constructor taking more arguments in a class file?

F41

quark

It might be a typo above but the class name and constructor name must match exactly

So if class is called MyClass then the constructor is

public MyClass() {
  // code for default constructor
}

public MyClass( ... parameters ...){
  // code for this parameter constructor
}

quark

I also suggest that you change the first line (ONLY) in the build.xml file

<project name="Processing Library" default="clean" basedir="../">

Change the name to something that represents your library. I use Eclipse and have 9 libraries, so it helps me tell the build files apart in the Ant view, like this

If you have the Ant view open you can simply double click on the library build file you want to run. :)

f41ardu

Thanks a lot quark. Issue solved and I much appreciate your hint regarding the build.xml.