JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to create custom constructor enum?


Description:

This example gives you how to create custom constructor for enum. The constructor should be either private or default scope, should not be protected or public. All elements defined in the enum must call constructor.


Code:
package com.java2novice.enums;

public class MyEnumCustomConstructor {

	enum Department{
		
		ACCOUNT(12),HR(24),FINANCE(100),SECURITY(108);
		
		private int deptId;
		
		Department(int id){
			deptId = id;
		}
		
		public int getDeptId(){
			return deptId;
		}
	}
	
	public static void main(String a[]){
		System.out.println("Accounts dept id:"+Department.ACCOUNT.getDeptId());
		System.out.println("HR dept id:"+Department.HR.getDeptId());
		System.out.println("Security dept id:"+Department.SECURITY.getDeptId());
	}
}

Output:
Accounts dept id:12
HR dept id:24
Security dept id:108
<< Previous 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?
Knowledge Centre
Procedural Vs Object-oriented Programs
In procedural program, programming logic follows certain procedures and the instructions are executed one after another. In OOP program, unit of program is object, which is nothing but combination of data and code.

In procedural program, data is exposed to the whole program whereas in OOPs program, it is accessible with in the object and which in turn assures the security of the code.
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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].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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