{"id":26962,"date":"2021-05-06T23:10:04","date_gmt":"2021-05-07T03:10:04","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/recent-posts\/tests-the-class-type-of-an-object-using-the-isinstance-method-preferred-over-instanceof-operator-programming-code-examples-java-j2ee-j2me-basic-java\/"},"modified":"2021-05-06T23:10:04","modified_gmt":"2021-05-07T03:10:04","slug":"tests-the-class-type-of-an-object-using-the-isinstance-method-preferred-over-instanceof-operator-programming-code-examples-java-j2ee-j2me-basic-java","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=26962","title":{"rendered":"Tests the class type of an object using the isInstance method (preferred over instanceof operator). #Programming Code Examples #Java\/J2EE\/J2ME #Basic Java"},"content":{"rendered":"<pre>\n\n\/** Taken from Core Web Programming from\n *  Prentice Hall and Sun Microsystems Press,\n *  .\n *  &copy; 2001 Marty Hall and Larry Brown;\n *  may be freely used or adapted.\n *\/\n\ninterface Barking {}\n\nclass Mammal {}\n\nclass Canine extends Mammal {}\n\nclass Dog extends Canine implements Barking {}\n\nclass Retriever extends Dog {}\n\npublic class InstanceOf {\n  public static void main(String[] args) {\n    Canine wolf = new Canine();\n    Retriever rover = new Retriever();\n\n    System.out.println(&quot;Testing instanceof:&quot;);\n    report(wolf, &quot;wolf&quot;);\n    System.out.println();\n    report(rover, &quot;rover&quot;);\n\n    System.out.println(&quot;nTesting isInstance:&quot;);\n    Class barkingClass = Barking.class;\n    Class dogClass = Dog.class;\n    Class retrieverClass = Retriever.class;\n    System.out.println(&quot;  Does a retriever bark? &quot; +\n                       barkingClass.isInstance(rover));\n    System.out.println(&quot;  Is a retriever a dog? &quot; +\n                       dogClass.isInstance(rover));\n    System.out.println(&quot;  Is a dog necessarily a retriever? &quot; +\n                       retrieverClass.isInstance(new Dog()));\n  }\n\n  public static void report(Object object, String name) {\n    System.out.println(&quot;  &quot; + name + &quot; is a mammal: &quot; +\n                       (object instanceof Mammal));\n    System.out.println(&quot;  &quot; + name + &quot; is a canine: &quot; +\n                       (object instanceof Canine));\n    System.out.println(&quot;  &quot; + name + &quot; is a dog: &quot; +\n                       (object instanceof Dog));\n    System.out.println(&quot;  &quot; + name + &quot; is a retriever: &quot; +\n                       (object instanceof Retriever));\n  }\n}\n<\/pre>\n<p>Note: Brought from our old site: http:\/\/www.salearningschool.com\/example_codes\/ on Jan 2nd, 2017 From: http:\/\/sitestree.com\/?p=10220<br \/> Categories:Programming Code Examples, Java\/J2EE\/J2ME, Basic Java<br \/>Tags:Java\/J2EE\/J2MEBasic Java<br \/> Post Data:2017-01-02 16:04:23<\/p>\n<p>\t\tShop Online: <a href='https:\/\/www.ShopForSoul.com\/' target='new' rel=\"noopener\">https:\/\/www.ShopForSoul.com\/<\/a><br \/>\n\t\t(Big Data, Cloud, Security, Machine Learning): Courses: <a href='http:\/\/Training.SitesTree.com' target='new' rel=\"noopener\"> http:\/\/Training.SitesTree.com<\/a><br \/>\n\t\tIn Bengali: <a href='http:\/\/Bangla.SaLearningSchool.com' target='new' rel=\"noopener\">http:\/\/Bangla.SaLearningSchool.com<\/a><br \/>\n\t\t<a href='http:\/\/SitesTree.com' target='new' rel=\"noopener\">http:\/\/SitesTree.com<\/a><br \/>\n\t\t8112223 Canada Inc.\/JustEtc: <a href='http:\/\/JustEtc.net' target='new' rel=\"noopener\">http:\/\/JustEtc.net (Software\/Web\/Mobile\/Big-Data\/Machine Learning) <\/a><br \/>\n\t\tShop Online: <a href='https:\/\/www.ShopForSoul.com'> https:\/\/www.ShopForSoul.com\/<\/a><br \/>\n\t\tMedium: <a href='https:\/\/medium.com\/@SayedAhmedCanada' target='new' rel=\"noopener\"> https:\/\/medium.com\/@SayedAhmedCanada <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\/** Taken from Core Web Programming from * Prentice Hall and Sun Microsystems Press, * . * &copy; 2001 Marty Hall and Larry Brown; * may be freely used or adapted. *\/ interface Barking {} class Mammal {} class Canine extends Mammal {} class Dog extends Canine implements Barking {} class Retriever extends Dog {} &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=26962\">Continue reading<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1917],"tags":[],"class_list":["post-26962","post","type-post","status-publish","format-standard","hentry","category-fromsitestree-com","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":10505,"url":"http:\/\/bangla.sitestree.com\/?p=10505","url_meta":{"origin":26962,"position":0},"title":"Tests the class type of an object using the isInstance method (preferred over instanceof operator).","author":"","date":"August 29, 2015","format":false,"excerpt":"\/** Taken from Core Web Programming from \u00a0*\u00a0 Prentice Hall and Sun Microsystems Press, \u00a0*\u00a0 . \u00a0*\u00a0 \u00a9 2001 Marty Hall and Larry Brown; \u00a0*\u00a0 may be freely used or adapted. \u00a0*\/ interface Barking {} class Mammal {} class Canine extends Mammal {} class Dog extends Canine implements Barking {}\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10206,"url":"http:\/\/bangla.sitestree.com\/?p=10206","url_meta":{"origin":26962,"position":1},"title":"RMI Example &#8211; Message, illustrates retrieving a message from an object located on a remote server. Requires the following classes","author":"","date":"August 25, 2015","format":false,"excerpt":"Rem.java\u00a0 Establishes which methods the client can access in the remote object. import java.rmi.*; \/** The RMI client will use this interface directly. The RMI \u00a0*\u00a0 server will make a real remote object that implements this, \u00a0*\u00a0 then register an instance of it with some URL. \u00a0* \u00a0*\u00a0 Taken from\u2026","rel":"","context":"In &quot;Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8&quot;","block_context":{"text":"Code . Programming Samples . \u09aa\u09cd\u09b0\u09cb\u0997\u09cd\u09b0\u09be\u09ae \u0989\u09a6\u09be\u09b9\u09b0\u09a8","link":"http:\/\/bangla.sitestree.com\/?cat=1417"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":26745,"url":"http:\/\/bangla.sitestree.com\/?p=26745","url_meta":{"origin":26962,"position":2},"title":"RMI Example &#8211; Message, illustrates retrieving a message from an object located on a remote server. 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