Extends in java

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Extends and implements together in java example.

Difference between extends and implements in java

Implementing interface in java example

Extends and implements together in java example

Can a class implement multiple interfaces in java

How to implement interface in java

Implementing an Interface

To declare a class that implements an interface, you include an clause in the class declaration. Your class can implement more than one interface, so the keyword is followed by a comma-separated list of the interfaces implemented by the class.

By convention, the clause follows the clause, if there is one.

A Sample Interface, Relatable

Consider an interface that defines how to compare the size of objects.

public interface Relatable { // this (object calling isLargerThan) // and other must be instances of // the same class returns 1, 0, -1 // if this is greater than, // equal to, or less than other public int isLargerThan(Relatable other); }

If you want to be able to compare the size of similar objects, no matter what they are, the class that instantiates them should implement .

Any class can implement if there is some way to compare the relative "size" of objects instantiated from the class.

For strings, it could be number of characters; for books, it could be number of pages; for students, it could be weight; and so forth. For planar geo

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