JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

Publish Your Article Here

Program: How to call enum, which is defined inside a class?


Description:

This example defines a basic enum type called Fruit inside a class. This example shows how to call enum constants defined under another class. If you declare Enum is a member of a class, then by default it is static. You can access it with reference to enclosing class.


Code:
package com.java2novice.enums;

public class MyEnumInsideClass {
	
	private MyWrapper.Fruit myFruit;
	
	public MyEnumInsideClass(MyWrapper.Fruit 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[]){
		MyEnumInsideClass grape = new MyEnumInsideClass(MyWrapper.Fruit.GRAPE);
		grape.getFruitDesc();
		MyEnumInsideClass apple = new MyEnumInsideClass(MyWrapper.Fruit.APPLE);
		apple.getFruitDesc();
		MyEnumInsideClass lemon = new MyEnumInsideClass(MyWrapper.Fruit.LEMON);
		lemon.getFruitDesc();
		MyEnumInsideClass guava = new MyEnumInsideClass(MyWrapper.Fruit.GUAVA);
		guava.getFruitDesc();
	}
}

class MyWrapper{
	
	enum Fruit {
	    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.
<< Previous Program | Next Program >>

List Of All Enum Programs:

  1. Basic Enum example.
  2. How to call enum, which is defined inside a class?
  3. How to override toString() method with enum?
  4. How to create custom constructor enum?
Java2Novice - YouTube Channel
  1. Python Tutorial for Beginners
Knowledge Centre
What is race condition?
A race condition is a situation in which two or more threads or processes are reading or writing some shared data, and the final result depends on the timing of how the threads are scheduled. Race conditions can lead to unpredictable results and subtle program bugs. A thread can prevent this from happening by locking an object. When an object is locked by one thread and another thread tries to call a synchronized method on the same object, the second thread will block until the object is unlocked.
Famous Quotations
Education is what remains after one has forgotten what one has learned in school.
-- Albert Einstein

About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

Most Visited Pages

Other Interesting Sites

Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
Privacy Policy | Copyright © 2019 by Nataraja Gootooru. All Rights Reserved.