{"id":65924,"date":"2021-07-17T04:10:05","date_gmt":"2021-07-17T08:10:05","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/recent-posts\/ejb-2-how-to-build-a-stateless-ejb-java-short-notes\/"},"modified":"2021-07-17T04:10:05","modified_gmt":"2021-07-17T08:10:05","slug":"ejb-2-how-to-build-a-stateless-ejb-java-short-notes","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=65924","title":{"rendered":"EJB 2: How to build a stateless EJB #Java Short Notes"},"content":{"rendered":"

EJB 2: How to build a stateless EJB<\/b><\/p>\n

    \n
  1. Install an EJB Server <\/li>\n
  2. Specify the EJB Remote Interface <\/li>\n
  3. Specify the Home Interface <\/li>\n
  4. Write the EJB bean Class <\/li>\n
  5. Create the ejb-jar File <\/li>\n
  6. Deploy the EJB bean <\/li>\n
  7. Write the EJB Client <\/li>\n
  8. Run the Client<\/li>\n<\/ol>\n

    From: http:\/\/sitestree.com\/?p=4832
    Categories:Java Short Notes
    Tags:
    Post Data:2007-03-12 03:44:24<\/p>\n

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    EJB 2: How to build a stateless EJB Install an EJB Server Specify the EJB Remote Interface Specify the Home Interface Write the EJB bean Class Create the ejb-jar File Deploy the EJB bean Write the EJB Client Run the Client From: http:\/\/sitestree.com\/?p=4832 Categories:Java Short NotesTags: Post Data:2007-03-12 03:44:24 Shop Online: https:\/\/www.ShopForSoul.com\/ (Big Data, Cloud, … <\/p>\n

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A component can be comprised of multiple objects Component = logical groups of classes = distributed objects = business objects A component can be developed to address a specific enterprise applications. Hence, components can provide significant encapsulation\/re-usability in the partitioned enterprise problems. Component\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":65940,"url":"http:\/\/bangla.sitestree.com\/?p=65940","url_meta":{"origin":65924,"position":2},"title":"Comparison EJB 2 and EJB 3 #Java Short Notes","author":"Author-Check- Article-or-Video","date":"July 18, 2021","format":false,"excerpt":"Comparison EJB 2 and EJB 3 EJB 2.0 has deployment descriptors but EJB 3.0 has no deployment descriptor In EJB 2.0 you have to write Home and Remote Interfaces But in EJB3.0 you do not need to write Home interfaces In EJB 3.0, all entities are identified with '@' In\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":66310,"url":"http:\/\/bangla.sitestree.com\/?p=66310","url_meta":{"origin":65924,"position":3},"title":"A simple EJB 3.0 application: Explanation of EJB 3.0 technology: EJB => Spring Framework #Java Short Notes","author":"Author-Check- Article-or-Video","date":"July 18, 2021","format":false,"excerpt":"A simple EJB 3.0 application: Explanation of EJB 3.0 technology: EJB => Spring Framework ....... .... ... A simple EJB 3.0 application: Explanation of EJB 3.0 technology: EJB => Spring Framework From: http:\/\/sitestree.com\/?p=4933 Categories:Java Short NotesTags: Post Data:2008-05-07 18:54:31 Shop Online: https:\/\/www.ShopForSoul.com\/ (Big Data, Cloud, Security, Machine Learning): Courses: http:\/\/Training.SitesTree.com\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":65975,"url":"http:\/\/bangla.sitestree.com\/?p=65975","url_meta":{"origin":65924,"position":4},"title":"Introduction to Spring #Java Short Notes","author":"Author-Check- Article-or-Video","date":"July 18, 2021","format":false,"excerpt":"Open-sourced on February, 2003 Layered J2EE application framework Inversion of Control (IoC): A Data Access Object (DAO) depends on a DataSource. Allows: code to interfaces Spring has classes to support Hibernate, Struts, and other frameworks According to many Java developers [ref:internet], J2EE patterns are sometimes cumbersome. Spring uses patterns but\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":65926,"url":"http:\/\/bangla.sitestree.com\/?p=65926","url_meta":{"origin":65924,"position":5},"title":"EJB 3: Statefull EJB #Java Short Notes","author":"Author-Check- Article-or-Video","date":"July 17, 2021","format":false,"excerpt":"States need to be maintained between calls. In EJB3 all beans are homeless [no home interface]\/\/ShoppingCartBean.javaimport java.io.Serializable;import java.util.HashMap;import javax.ejb.Remove;import javax.ejb.Stateful;import javax.ejb.Remote;@Stateful@Remote(ShoppingCart.class)public class ShoppingCartBean implements ShoppingCart, Serializable{ private HashMap cart = new HashMap(); public void buy(String product, int quantity) { if (cart.containsKey(product)) { int currq = cart.get(product); currq += quantity; cart.put(product,\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/65924","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=65924"}],"version-history":[{"count":0,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/65924\/revisions"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=65924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=65924"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=65924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}