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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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  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?
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Difference between while and do-while
The while statement verifies the condition before entering into the loop to see whether the next loop iteration should occur or not. The do-while statement executes the first iteration without checking the condition, it verifies the condition after finishing each iteration. The do-while statement will always execute the body of a loop at least once.
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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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