{"id":593,"date":"2014-12-19T07:16:12","date_gmt":"2014-12-19T07:16:12","guid":{"rendered":"http:\/\/codethataint.com\/blog\/?p=593"},"modified":"2014-12-19T08:52:42","modified_gmt":"2014-12-19T08:52:42","slug":"working-with-enum-java","status":"publish","type":"post","link":"https:\/\/codethataint.com\/blog\/working-with-enum-java\/","title":{"rendered":"Working with ENUM Java"},"content":{"rendered":"

Working with ENUM<\/strong>
\nENUM is just a list of set of value which are static and final.Executing the below code will have a output like one below<\/p>\n

\r\npublic class Test {\r\n\tpublic enum Company {\r\n\t\tEBAY, PAYPAL, GOOGLE, YAHOO, ATT\r\n\t}\r\n\r\n\tpublic static void main(String[] args) {\r\n                System.out.println(Company.EBAY);\r\n\t}\r\n}\r\n<\/pre>\n
Output<\/strong><\/p>\n
\r\n  EBAY\r\n<\/pre>\n
\nNow what you can do is to make this constant (static and final) to have further attributes like one below.\n<\/p>\n
\r\npublic enum Company {\r\nEBAY(30), PAYPAL(10), GOOGLE(15), YAHOO(20), ATT(25);\r\nprivate int value;\r\n \r\nprivate Company(int value) {\r\nthis.value = value;\r\n}\r\n}\r\n<\/pre>\n
and more Values with overloaded constructor<\/p>\n
\r\npublic class Test1 {\r\n\r\n\tpublic enum JobStatus {\r\n\t\tOPEN("Open", "Its Open", "1"), ERROR("Error", "Its a Error", "2"), WORKING(\r\n\t\t\t\t"Working", "Its Working", "3"), CLOSED("Closed", "Its Closed");\r\n\t\tprivate String\tvalue;\r\n\t\tprivate String\tlabel;\r\n\t\tprivate String\torder;\r\n\r\n\t\tprivate JobStatus(String label, String value, String order) {\r\n\t\t\tthis.label = label;\r\n\t\t\tthis.value = value;\r\n\t\t\tthis.order = order;\r\n\t\t}\r\n\r\n\t\tprivate JobStatus(String label, String value) {\r\n\t\t\tthis.label = label;\r\n\t\t\tthis.value = value;\r\n\t\t}\r\n\r\n\t\tpublic String getValue() {\r\n\t\t\treturn this.value;\r\n\t\t}\r\n\r\n\t\tpublic String getLabel() {\r\n\t\t\treturn this.label;\r\n\t\t}\r\n\t}\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tSystem.out.println(JobStatus.OPEN.value);\r\n\t\tSystem.out.println(JobStatus.OPEN.label);\r\n\t\tSystem.out.println(JobStatus.OPEN.order);\r\n\t\tSystem.out.println(JobStatus.CLOSED.order);\r\n\t}\r\n}\r\n<\/pre>\n
Output<\/strong><\/p>\n
\r\nIts Open\r\nOpen\r\n1\r\nnull\r\n<\/pre>\n
\nWhen you need a predefined list of values which do not represent some kind of numeric or textual data, you should use an enum. For instance, in a chess game you could represent the different types of pieces as an enum\n<\/p>\n
\r\nenum ChessPiece {\r\nPAWN,\r\nROOK,\r\nKNIGHT,\r\nBISHOP,\r\nQUEEN,\r\nKING;\r\n}\r\n<\/pre>\n
Assigning Values to ENUM<\/strong><\/p>\n
\r\npublic enum Company {\r\nEBAY(30), PAYPAL(10), GOOGLE(15), YAHOO(20), ATT(25);\r\nprivate int value;\r\n \r\nprivate Company(int value) {\r\nthis.value = value;\r\n}\r\n}\r\n<\/pre>\n