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Program: How to create custom constructor enum?


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.

package com.java2novice.enums;

public class MyEnumCustomConstructor {

        enum Department{
                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());

Accounts dept id:12
HR dept id:24
Security dept id:108
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List Of All Enum Programs:

  1. Basic Enum example.
  2. How to call enum, which is defined inside a class?
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  4. How to create custom constructor enum?
Knowledge Centre
Java class can be private?
We can not declare top level class as private. Java allows only public and default modifier for top level classes in java. Inner classes can be private.
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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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