Creating an instance using the class name and calling constructor
Yes, something like:
Class<?> clazz = Class.forName(className);Constructor<?> ctor = clazz.getConstructor(String.class);Object object = ctor.newInstance(new Object[] { ctorArgument });That will only work for a single string parameter of course, but you can modify it pretty easily.
Note that the class name has to be a fully-qualified one, i.e. including the namespace. For nested classes, you need to use a dollar (as that's what the compiler uses). For example:
package foo;public class Outer{ public static class Nested {}}To obtain the Class object for that, you'd need Class.forName("foo.Outer$Nested").
You can use Class.forName() to get a Class object of the desired class.
Then use getConstructor() to find the desired Constructor object.
Finally, call newInstance() on that object to get your new instance.
Class<?> c = Class.forName("mypackage.MyClass");Constructor<?> cons = c.getConstructor(String.class);Object object = cons.newInstance("MyAttributeValue");
You can use reflections
return Class.forName(className).getConstructor(String.class).newInstance(arg);