java methods overloading

Method Overloading

With method overloading, multiple methods can have the same name with different

parameters:

Example

int myMethod(int x)

float myMethod(float x)

double myMethod(double x, double y)

Consider the following example, which have two methods that add numbers of different type:

Example

static int plusMethodInt(int x, int y) {

return x + y;

}



static double plusMethodDouble(double x, double y) {

return x + y;

}



public static void main(String[] args) {

int myNum1 = plusMethodInt(8, 5);

double myNum2 = plusMethodDouble(4.3, 6.26);

System.out.println("int: " + myNum1);

System.out.println("double: " + myNum2);

}

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Instead of defining two methods that should do the same thing, it is better to overload one.

In the example below, we overload the plusMethod

method to work for both int

and double:

Example

static int plusMethod(int x, int y) {

return x + y;

}



static double plusMethod(double x, double y) {

return x + y;

}



public static void main(String[] args) {

int myNum1 = plusMethod(8, 5);

double myNum2 = plusMethod(4.3, 6.26);

System.out.println("int: " + myNum1);

System.out.println("double: " + myNum2);

}

Try it Yourself »

Note: Multiple methods can have the same name

as long as the number and/or type of parameters are different.