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?
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What is transient variable?
Transient variables cannot be serialized. During serialization process, transient variable states will not be serialized. State of the value will be always defaulted after deserialization.
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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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