how to implement a interface in java

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showing results for - "how to implement a interface in java"
Lara
31 Jun 2017
1// Assume we have the simple interface:
2interface Appendable {
3	void append(string content);
4}
5// We can implement it like that:
6class SimplePrinter implements Appendable {
7 	public void append(string content) {
8   		System.out.println(content); 
9    }
10}
11// ... and maybe like that:
12class FileWriter implements Appendable {
13 	public void append(string content) {
14   		// Appends content into a file 
15    }
16}
17// Both classes are Appendable.
Ewan
24 Jul 2019
1interface methods{
2 public static hey(); 
3}
4
5class scratch implements methods{
6  // Required to implement all methods declared in an interface 
7  // Or else the class becomes abstract
8  public static hey(){
9   System.out.println("Hey"); 
10  }
11}
Julia
18 Sep 2016
1/* File name : MammalInt.java */
2public class MammalInt implements Animal {
3
4   public void eat() {
5      System.out.println("Mammal eats");
6   }
7
8   public void travel() {
9      System.out.println("Mammal travels");
10   } 
11
12   public int noOfLegs() {
13      return 0;
14   }
15
16   public static void main(String args[]) {
17      MammalInt m = new MammalInt();
18      m.eat();
19      m.travel();
20   }
21} 
Lisa
18 Aug 2017
1// interface syntax
2interface InterfaceName
3{
4   fields // by default interface fields are public, static final
5   methods // by default interface methods are abstract, public
6}
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