import java.lang.reflect.Method;

class main {

public static void main (String[] args) {

ReflectionExampleNoReturnType noReturnType = new ReflectionExampleNoReturnType();

ReflectionExampleWithReturnType returnType = new ReflectionExampleWithReturnType();

String methodName = "reflectionPerfection";

try {

System.out.println("<< One");

Method method = noReturnType.getClass().getMethod(methodName);

method.invoke(noReturnType);

System.out.println(" ");

System.out.println("<< Two");

method = noReturnType.getClass().getMethod(methodName, String.class);

method.invoke(noReturnType, "Parameter Value");

System.out.println(" ");

System.out.println("<< Three");

method = returnType.getClass().getMethod(methodName, String.class);

returned = (String) method.invoke(returnType, "Parameter Value");

System.out.println("Returned value: '" + returned + "'");

System.out.println(" ");

System.out.println("<< Four");

method = returnType.getClass().getMethod(methodName);

String returned = (String) method.invoke(returnType);

System.out.println("Returned value: '" + returned + "'");

} catch (NoSuchMethodException e) {

System.out.println("Reflection says no");

} catch (Exception e) {

}

}

}