Load a method on the fly : Method « Reflection « Java

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Java » Reflection » Method Screenshots  Load a method on the fly     import java.lang.reflect.Method; public class MainClass {   public static void main(String[] args) throws Exception {     printTable(10, MethodReflection.class.getMethod("square",         new Class[] { double.class }));     printTable( 10, java.lang.Math.class.getMethod("sqrt",         new Class[] { double.class }));   }   public static double square(double x) {     return x * x;   }   public static void printTable(int n, Method f) {     System.out.println(f);     try {       Object[] args = { new Double(n) };       Double d = (Double) f.invoke(null, args);       double y = d.doubleValue();       System.out.println(y);     } catch (Exception e) {       System.out.println(e);     }   } }                                    Related examples in the same category 1.  Method Reflection 2.  Demonstrates how to get specific method information 3.  Class Reflection: show methods 4.  Object Reflection: invoke methods 5.  To get the calling method 6.  Get the class name in a static method 7.  Call a method dynamically (Reflection) 8.  Call a class method with 2 arguments 9.  Using reflection to show all the methods of a class, 10.  Invoke method through Java Reflection API 11.  Get a given method, and invoke it 12.  Show loading a class and finding and calling its Main method 13.  Demonstrates dynamic usage of methods 14.  Demonstration of various method invocation issues 15.  An invocation handler that counts the number of calls for all methods in the target class. 16.  Method modifiers: isSynthetic(), m.isVarArgs(), m.isBridge() 17.  Call private method 18.  Get the methods of a class object 19.  Invoke a method using Method class 20.  The next example calls a class method with 2 arguments: 21.  Getting the Methods of a Class Object: By obtaining a list of all declared methods 22.  Getting the Methods of a Class Object: By obtaining a list of all public methods, both declared and inherited. 23.  Getting the Methods of a Class Object: By obtaining a particular Method object. 24.  Get the current method name 25.  Get the current method name With JDK1.5 26.  Get all declared methods from a class 27.  Make methods that have unspecified number of parameters:pass an array of Objects 28.  Get all methods including the inherited method. Using the getMethods(), we can only access public methods. 29.  Fetches all methods of all access types from the supplied class and super classes 30.  Find a Method on the supplied class with the supplied name and no parameters 31.  Find a Method on the supplied class with the supplied name and parameter types 32.  Checks whether the specified class contains a method matching the specified name. 33.  Call a member function to get the value 34.  Call a method of an object 35.  Call a static method of a class with reflection 36.  Returns method with the specified name 37.  Find method 38.  Invokes a method, masking with a runtime exception all the exceptions. 39.  Sorts methods according to their name, number of parameters, and parameter types.