{"id":1951,"date":"2011-04-11T18:33:57","date_gmt":"2011-04-11T13:03:57","guid":{"rendered":"http:\/\/JitendraZaa.com\/blog\/?p=1951"},"modified":"2011-04-11T18:33:57","modified_gmt":"2011-04-11T13:03:57","slug":"project-coin-java-7-new-features","status":"publish","type":"post","link":"https:\/\/www.jitendrazaa.com\/blog\/java\/project-coin-java-7-new-features\/","title":{"rendered":"Project Coin – Java 7 new features"},"content":{"rendered":"

After reading the title “project Coin<\/strong><\/a>“, few of you must be thinking that what is it ? And how it is related to Java 7 new features.<\/p>\n

So, here we go…<\/p>\n

Project Coin<\/a> is the part of Java 7 development which is running since January 2009 with the aim of coming with small changes to the Java language.<\/strong><\/p><\/blockquote>\n

In February to march 2009, there were nearly 70 proposals were submitted for huge range of possible changes in Java 7. Project coin<\/a> has set up the example that how language can be developed in the future by discussion in openly manner with the public all around the world.<\/strong><\/p>\n

Java 7 new Features :<\/strong><\/span><\/p>\n

Support of Strings in “Switch” statement:<\/strong>
\nBefore Java 7, we can only use constants of type byte, char, short or enum. However, now we can use the string also in switch case statement.<\/p>\n

\nswitch(dayOfWeek)\n{\n   case "Monday" : System.out.println("Its first day of the office");break;\n   ....\n   case "Sunday" : System.out.println("Hurrey.. its weekend");break;\n}\n<\/pre>\n
Enhanced Syntax of Numeric literals<\/strong><\/p>\n
    \n
  •  Numeric constants expressed as binary.<\/li>\n
  •  Use of underscores in integer constants for readability.<\/li>\n
  •  A specific suffix to denote that an integer constant has type short or byte.<\/li>\n<\/ul>\n
    Improved Exception handling<\/strong>
    \nBefore Java 7, we used to write multiple catch blocks in our program which looks like very verbose.
    \nwith the help of pipe operator in Java 7, we can write multiple catch blocks in one line as shown below :<\/p>\n
    \npublic void printFileContent(String fileName_) {\nConfiguration cfg = null;\ntry {\nString fileText = getFile(fileName_);\n\/\/...code to print content\n} catch (FileNotFoundException|ParseException|FileLockInterruptionException e) {\nSystem.err.println("error while opening file");\n} catch (IOException iox) {\nSystem.err.println("Error while processing file");\n}\n\n}\n<\/pre>\n
    Try with resources
    \nC# developers will find the syntax friendly , as it is same as using clause.<\/p>\n
    \ntry ( FileOutputStream fos = new FileOutputStream(file);\nInputStream is = url.openStream() ) {\nbyte[] buf = new byte[4096];\nint len;\nwhile ((len = is.read(buf)) > 0) {\nfos.write(buf, 0, len);\n}\n}\n<\/pre>\n
    Diamond Syntax :<\/strong>
    \nBefore Java 7, generic Syntax was like :<\/p>\n
    \nMap<Movie,Songs> m = new HashMap<Movie,Songs>();\n<\/pre>\n
    As you can see, we are repeating the syntax at right hand side, why compiler should not be able to take care of that?
    \nBelow is the new user friendly syntax.<\/p>\n
    \nMap<Movie,Songs> m = new HashMap<>();\n<\/pre>\n
    There is also change in Varargs Syntax which we will discuss in detail later on.
    \nPlease leave your valuable suggestions to improve the article and content.<\/p>\n
     <\/p>\n","protected":false},"excerpt":{"rendered":"
    What is Project Coin and how it is related to JAVA<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"jz_research_post":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[329],"class_list":["post-1951","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":1586,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/servlet\/read-file-present-inside-java-and-j2ee-project\/","url_meta":{"origin":1951,"position":0},"title":"Read File Present inside Java and J2EE Project","author":"Jitendra","date":"February 24, 2011","format":false,"excerpt":"How to Read File Present inside Java and J2EE Project","rel":"","context":"In "Servlet"","block_context":{"text":"Servlet","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/servlet\/"},"img":{"alt_text":"Read File Present inside Java and J2EE Project","src":"https:\/\/i0.wp.com\/jitendrazaa.com\/blog\/wp-content\/uploads\/2011\/02\/Read-File-Present-inside-Java-and-J2EE-Project.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1742,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/introduction-to-jaxp\/","url_meta":{"origin":1951,"position":1},"title":"Introduction to JAXP and Difference between JAXP and JAXB","author":"Jitendra","date":"March 22, 2011","format":false,"excerpt":"Introduction to JAXP (JAVA API for XML Processing), SAX (Simple API for XML Parsing),Extensible Style sheet language transformation (XSLT)","rel":"","context":"In "JAVA"","block_context":{"text":"JAVA","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/"},"img":{"alt_text":"XML Processing using DOM in JAXP","src":"https:\/\/i0.wp.com\/jitendrazaa.com\/blog\/wp-content\/uploads\/2011\/03\/XML-Processing-using-DOM-in-JAXP.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":2112,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/resolve-missing-builder-error-for-eclipse-in-ccb-ormb\/","url_meta":{"origin":1951,"position":2},"title":"Resolve Missing Builder error for eclipse in CC&B (ORMB)","author":"Jitendra","date":"May 11, 2011","format":false,"excerpt":"How to Resolve Missing Builder error for eclipse in CC&B (ORMB)","rel":"","context":"In "JAVA"","block_context":{"text":"JAVA","link":"https:\/\/www.jitendrazaa.com\/blog\/category\/java\/"},"img":{"alt_text":"Missing Builder error in CC&B (ORMB)","src":"https:\/\/i0.wp.com\/jitendrazaa.com\/blog\/wp-content\/uploads\/2011\/05\/Missinh-Builder-error-in-CCB-ORMB.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":3213,"url":"https:\/\/www.jitendrazaa.com\/blog\/java\/resolve-error-artifacttransferexception-could-not-transfer-artifact-or-failure-to-transfer-in-maven\/","url_meta":{"origin":1951,"position":3},"title":"Resolve Error “ArtifactTransferException: Could not transfer artifact” or “Failure to Transfer” in Maven","author":"Jitendra","date":"February 27, 2013","format":false,"excerpt":"This is very short tips to resolve the errors \"ArtifactTransferException: Could not transfer artifact\" that may occur in Maven project in Eclipse. 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