The Fission Theory: This theory proposes that the Moon was once part of the Earth and somehow separated from the Earth early in the history of the solar system.
This provides modular approach to programming. Classes. A class is a concept used in object oriented programming languages such as C++, PHP, and JAVA etc. Apart from holding data, a class is also used to hold functions. An object is an instant of a class. In case of variables, the type is the class whereas the variable is the object.
In Java, we call these method. Method names are identifiers, so they follow the rules for identifiers. They also follow the same style rules as variable names. Method names tell an object what to do. A class designer decides what base operations an object should respond to, and gives each operation a name. More complex operations are sometimes done by doing several base operations in sequence.