在createExecutableExtension中调用参数化的构造函数

Question

I've a class ( Clock ) with a parameterized constructor. I am calling this Clock class in a plugin using extensions.

try {
            for (IConfigurationElement e : config) {
                System.out.println("Harsha Evaluating extension of Clock");
                o = e.createExecutableExtension("class");
            }
        } catch (CoreException ex) {
            System.out.println(ex.getMessage());

        }

The method createExecutableExtenison is only calling default constructor of Clock class. How can I call parameterized constructor of Clock class?

Thanks in advance.

Answer 1

The Javadoc for createExecutableExtension says:

The specified class is instantiated using its 0-argument public constructor.

so you can't use a parameterized constructor.

You can make your class implement IExecutableExtension in which case the method:

public void setInitializationData(IConfigurationElement config, String propertyName, Object data) throws CoreException;

will be called straight after construction. This can be used to get extra information from the configuration element.