The object program contains the definition of data and methods for all instances of the class. 
 
  General Format
 
	  
	  
 
  General Rules
 
	   
	 - If a data-item is declared in the Object-Storage Section of an object program, it is instance data. Instance data may be referenced only in instance methods. 
	 
- Data items are in their initial state at the start of the run unit and remain in their last used state between method invocations. 
	 
- Method-1 is an instance method.