method overloading in java смотреть онлайн

In this video you will learn what is method overloading in java.
Each method has a signature, which comprises the name of the method, and types and order of the parameters in the formal parameter list.
Several method implementations may have the same name, as long as the method signature differs.
This is called as method overloading. Since overloaded methods have the same name, their parameter lists must be different.
Rather than inventing new method names, method overloading can be used when the same logical operation requires multiple implementations.
The java standard library makes heavy use of method overloading. For example, the class java.lang.Math contains an overloaded method min(), which returns the minimum of two numeric values.
In the following examples, three implementations of the method show() are shown:
public static void show(int a)
public static void show(int b,int c)
public static void show(double a,double b)

The corresponding signatures of three methods are as follows :
show(int )//number of parameters
show(int,int) //number of parameters 1,2
show(double,double) //type of parameters 2,3

Consider the following two declarations:
void bake(Cake large);
void bake(Cake small);

The above two methods are not overloaded and they are ambiguous because changing only the parameter name does not work in overloading.

Also consider the following two declaration :
int halfIt(int x);
double halfIt(int y);

The above two methods are not overloaded and they are ambiguous because changing the return type does not work in overloading.

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