|
|
Program: Basic Enum example.
Description: |
This example defines a basic enum type called Fruits. It contains few constants representing fruits.
The switch case uses these constants to execute conditions.
|
Code: |
package com.java2novice.enums;
public class MyBasicEnum {
private Fruits myFruit;
public MyBasicEnum(Fruits fruit){
this.myFruit = fruit;
}
public void getFruitDesc(){
switch (myFruit) {
case GRAPE:
System.out.println("A grape is a non-climacteric fruit.");
break;
case APPLE:
System.out.println("The apple is the pomaceous fruit.");
break;
case MANGO:
System.out.println("The mango is a fleshy stone fruit.");
break;
case LEMON:
System.out.println("Lemons are slow growing varieties of citrus.");
break;
default:
System.out.println("No desc available.");
break;
}
}
public static void main(String a[]){
MyBasicEnum grape = new MyBasicEnum(Fruits.GRAPE);
grape.getFruitDesc();
MyBasicEnum apple = new MyBasicEnum(Fruits.APPLE);
apple.getFruitDesc();
MyBasicEnum lemon = new MyBasicEnum(Fruits.LEMON);
lemon.getFruitDesc();
MyBasicEnum guava = new MyBasicEnum(Fruits.GUAVA);
guava.getFruitDesc();
}
}
enum Fruits {
GRAPE, APPLE, MANGO, LEMON,GUAVA
}
|
|
Output: |
A grape is a non-climacteric fruit.
The apple is the pomaceous fruit.
Lemons are slow growing varieties of citrus.
No desc available.
|
|
|
|
|
List Of All Enum Programs:- Basic Enum example.
- How to call enum, which is defined inside a class?
- How to override toString() method with enum?
- How to create custom constructor enum?
|
|
|
What is wrapper class?
Everything in java is an object, except primitives. Primitives are
int, short, long, boolean, etc. Since they are not objects, they cannot
return as objects, and collection of objects. To support this, java provides
wrapper classes to move primitives to objects. Some of the wrapper classes
are Integer, Long, Boolean, etc.
Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon.
-- Susan Erz
|