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GeezerVison is showing github.com — JavaTutorial-2/src/31_InterfaceExample.java at master · dynamo07/JavaTutorial-2 Expand file tree/ Copy path31_InterfaceExample.javaMore file actions 56 lines (42 loc) · 1.05 KB / Copy path31_InterfaceExample.javaFile metadata and controls56 lines (42 loc) · 1.05 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 /** * Interface Example One * */ public class Main { public static void main(String[] args) { // new Animal(); // Not Allowed. Animal animal = new Dog(); animal.eat(); animal.run(); } } interface Animal { public static final float pi = 3.14f; abstract public void run(); abstract public void eat(); } class Dog implements Animal { @Override public void run() { System.out.println("Dog is running"); } @Override public void eat() { System.out.println("Dog is eating"); } } /* * Rules of Interface * * You cannot create object of interface. They are just a blueprint of a class. * * Use implements keyword * * They can only contain abstract methods. * * 1. For Methods * * They are public and abstract * * No method body. You cannot write code within your method. * * 2. For Variables * * Avoid using field variables * * But when used they are constants. Their values cannot be changed once defined. * * They are public, static and final * * */ |
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