{"id":1881,"date":"2016-10-11T13:48:12","date_gmt":"2016-10-11T13:48:12","guid":{"rendered":"http:\/\/codethataint.com\/blog\/?p=1881"},"modified":"2024-09-21T14:13:03","modified_gmt":"2024-09-21T14:13:03","slug":"simple-factory","status":"publish","type":"post","link":"https:\/\/codethataint.com\/blog\/simple-factory\/","title":{"rendered":"Simple Factory"},"content":{"rendered":"

\"\"<\/p>\n

    \n
  1. In Simple Factory we have a Factory Class(LoggerFactory.java<\/strong>) and We call the createLogger<\/strong> method which returns different implementation of logger<\/li>\n
  2. Logger is a abstract class which has different implementations<\/li>\n<\/ol>\n

    \"\"<\/p>\n

    Logger.java<\/strong><\/p>\n

    \r\npublic abstract class Logger {\r\n  abstract void log(String logstring);\r\n}\r\n<\/pre>\n
    ConsoleLogger.java<\/strong><\/p>\n
    \r\npublic class ConsoleLogger extends Logger{\r\n    @Override\r\n    void log(String logstring) {\r\n        System.out.println("Logging to Console - "+ logstring);\r\n    }\r\n}\r\n<\/pre>\n
    DBLogger.java<\/strong><\/p>\n
    \r\npublic class DBLogger extends Logger{\r\n    @Override\r\n    void log(String logstring) {\r\n        System.out.println("Logging to Database - "+ logstring);\r\n    }\r\n}\r\n<\/pre>\n
    FileLogger.java<\/strong><\/p>\n
    \r\npublic class FileLogger extends Logger{\r\n    @Override\r\n    void log(String logstring) {\r\n        System.out.println("Logging to File - "+ logstring);\r\n    }\r\n}\r\n<\/pre>\n
    LoggerFactory.java<\/strong><\/p>\n
    \r\npublic class LoggerFactory {\r\n    public enum LoggerType {\r\n        DATABASE, FILE, CONSOLE;\r\n    }\r\n\r\n    \/\/The same code could be written using if else block instead of switch case\r\n    public Logger createLogger(LoggerType loggerType) {\r\n        Logger logger;\r\n\r\n        switch (loggerType) {\r\n            case FILE:\r\n                logger = new FileLogger();\r\n                break;\r\n            case DATABASE:\r\n                logger = new DBLogger();\r\n                break;\r\n            case CONSOLE:\r\n                logger = new ConsoleLogger();\r\n                break;\r\n            default:\r\n                logger = new ConsoleLogger();\r\n                break;\r\n        }\r\n\r\n        return logger;\r\n    }\r\n}\r\n<\/pre>\n
    ClientApp.java<\/strong><\/p>\n
    \r\npublic class ClientApp {\r\n    public static void main(String[] args) {\r\n        LoggerFactory objLoggerFactory = new LoggerFactory();\r\n        Logger logger = objLoggerFactory.createLogger(LoggerFactory.LoggerType.CONSOLE);\r\n        logger.log("Hello there");\r\n    }\r\n}\r\n<\/pre>\n
    Output<\/strong><\/p>\n
    \r\nLogging to Console - Hello there\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
    In Simple Factory we have a Factory Class(LoggerFactory.java) and We call the createLogger method which returns different implementation of logger Logger is a abstract class which has different implementations Logger.java public abstract class Logger { abstract void log(String logstring); } ConsoleLogger.java public class ConsoleLogger extends Logger{ @Override void log(String logstring) { System.out.println("Logging to Console -… Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[367],"tags":[],"class_list":["post-1881","post","type-post","status-publish","format-standard","hentry","category-simple-factory"],"_links":{"self":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/1881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/comments?post=1881"}],"version-history":[{"count":5,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/1881\/revisions"}],"predecessor-version":[{"id":5175,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/1881\/revisions\/5175"}],"wp:attachment":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/media?parent=1881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/categories?post=1881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/tags?post=1881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}