Application:
- Programming Languages and Technologies are used to develop applications.
- Application is a collection of Programs.
- We need to design and understand a single program before developing an application.
Program Elements: Program is a set of instructions.Every Program consists,
- Identity
- Variables
- Methods
- Identity:
- Identity of a program is unique.
- Programs, Classes, Variables and Methods having identities
- Identities are used to access these members.
- Variable:
- Variable is an identity given to memory location.
- Variable is a Named Memory Location
- Variables are used to store information of program(class/object)
| Syntax | Examples |
| datatype identity = value; | String name = “amar”; int age = 23; double salary = 35000.00; boolean married = false; |
- Method:
- Method is a block of instructions with an identity
- Method performs operations on data(variables)
- Method takes input data, perform operations on data and returns results.
| Syntax | Example |
| returntype identity(arguments) { body; } | int add(int a, int b) { int c = a+b; return c; } |