Functions Defined by Swati Chaturvedi

Method Structure

swatichaturvedi1 — 2020-07-20 03:21:44 UTC

(Parameter list)
{
//method body
}
eg. public void sum(int a, int b)
{
}

Functions are also called Methods.

swatichaturvedi1 — 2020-07-20 03:25:15 UTC

Access Specifier

swatichaturvedi1 — 2020-07-20 03:26:43 UTC

public- can be accessed from anywhere
private - cannot be accessed from anywhere( only the method uses it)
protected - sub-classes or classes in the same package can access it.

return type

swatichaturvedi1 — 2020-07-20 03:30:42 UTC

every method has a return type. It will return a value of any datatype -
byte
boolean
short
int
long
char
String
float
double
If a function does not return anything then we write void.

Function name

swatichaturvedi1 — 2020-07-20 03:32:48 UTC

Any name that conforms to the identifier rules and conventions.

Parameter List

swatichaturvedi1 — 2020-07-20 03:34:01 UTC

1. These values are written inside the round braces of the function.
2. A function may or may not have any parameters.
3. Parameters are the values or input that are given to a function.
4. Every value that is written here has a datatype and a parameter name.
5. The entire parameter list has comma separated values.
eg
int a, int b, String name

int a, char section, String name

Function Prototype

swatichaturvedi1 — 2020-07-20 03:38:24 UTC

The statement that tells about the return type of the function, parameter list and access specification of a function is called function prototype.