Invoking a Method

• Supply implicit parameter (null for static methods)
  
• Supply array of explicit parameter values
• Wrap primitive types
• Unwrap primitive return value
• Example: Call System.out.println("Hello, World") the hard way.
  

  Method m = PrintStream.class.getDeclaredMethod(
     "println", String.class);
  m.invoke(System.out, "Hello, World!"); 
  

• invoke is a varargs method