Java method definition

The so-called method: is the code used to solve a class of problems of the orderly combination is a functional module.

Format:

Access control modifier return value type method name (parameter list) {

Method body;

}

Access Control modifier: method allows access to the permission range.

	Similar	Same package	Sub-classes of different packages	Non-subclasses of different packages
Public	Allow	Allow	Allow	Allow
Protected	Allow	Allow	Allow
Default	Allow	Allow
Private	Allow

Return value type: The type of the method return value, if the method does not return any job, the return value type is specified as void, if the method has a return value, you need to specify the type of the return value, and return the value in the method body using the return statement.

Method Name: The name of the method defined, must use a valid identifier

Parameter list: The argument list passed to the method, the arguments can have multiple, multiple parameters are separated by commas, each parameter is composed of parameter type and parameter name, separated by a space

Depending on whether the method has parameters or not, the method can be divided into four classes, with or without a return value:

No parameter no return value method

Non-parametric return value method

No return value method with parameter

Return value method with a parameter

Java method definition