How to invoke Java methods using reflection In the Java reflection API, a method of a class or interface is represented by the java.lang.reflect.Method class. Coding from the hip, it would be something like: java.lang.reflect.Method method; try method = obj.getClass().getMethod(methodName, param1.class, param2.class. Reflection provides a means for invoking methods on a class. Typically, this would only be necessary if it is not possible to cast an instance of the class to the. Yes check if the object equals null before you invoke a method on it or try to access a variable it might have. Some times structuring your code can help avoid null. ORA-30625: Method Dispatch on NULL SELF Argument Is Disallowed. Expert Oracle tips by Burleson March 2, 2015 Using Java Reflection you can inspect the methods of classes and invoke them at runtime. This is done via the Java class java.lang.reflect.Method. This text will get. Object invoke (Object receiver, Object. args) Invokes the underlying method represented by this Method object, on the specified object with the specified. Descriptions BC: Equals method should not assume anything about the type of its argument (BC_EQUALS_METHOD_SHOULD_WORK_FOR_ALL_OBJECTS) The equals(Object o) method. version; c++ objective c java c ; version used C++11 gcc 4.8 clang 3.5: gcc 4.2: java 1.7: mono 2.10 (C 4.0) show version $ g++ --version $ gcc --version $ javac. this keyword in java or java this keyword is used to refer the current object. use of this keyword in java, uses of java this keyword, understanding the problem.