Define :
- A method that take value at the time of calling known as parameterised method.
- The fundamental parts of a method are the name, the arguments, the return type, and the body.
- In simple words methods with arguments, or variable in side the parentheses are called parameterised methods, and the arguments are called parameters.
- A method can have one parameter, or more parameters inside the parentheses.
Syntax -
|
ReturnType methodName( /* Argument list */ )
{
/* Method body */
}
|
Example1 -
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public class T{
static void show(int a) {
System.out.println(a+a);
}
public static void main(String[] args) {
show(4);
show(6);
show(9);
}
}
-----------------------------
Output -
8
12
18
|
Example2 - Similarly we can have more then one argument.
|
public class T{
static void show(int a, int b) {
System.out.println(a+b);
}
public static void main(String[] args) {
show(4,6);
show(6,2);
show(9,1);
}
}
-----------------------------
Output -
10
8
10
|
Note - we can have any type of argument like -int, String, float, etc.
Method with Returning value
- A method can return a value to caller if method return a value to caller if method return type is not void.
- A method can return only one value.
- Return variable type, and method return type must be same.
- We can have method with returning values as well we will understand with an example.
Syntax -
|
ReturnType methodName( /* Argument list */ )
{
/* Method body */
Returning value;
}
|
Example - create a method that take two string as a parameter, and return concatenated string.
Output :
