What is final, finally and finalize ?<\/h2>\n

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Final<\/h2>\n<\/div>\n<\/div>\n

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• Final is used to apply limitations on class, method and variable. Final variable value couldn’t be changed final method couldn\u2019t be overridden and final class can’t be inherited.<\/li>\n
• Final is a keyword.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
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  Sample Code<\/h2>\n<\/div>\n<\/div>\n

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  • Once initialized value of variable cannot be changed.<\/li>\n<\/ul>\n
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    class A {     public static void main(String[] args)     {         int a = 5;           \/\/ final variable         final int b = 6;                    a++;           \/\/ modifying the final variable :          b++;     } } <\/code><\/pre> <\/div>\n
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    If we declare any variable as final, we can\u2019t change its contents since it is final, and if we change it then we have the Compile Time Error.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
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    Finally<\/h2>\n<\/div>\n<\/div>\n
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    Finally is used to place significant code, whether exception is handled or not that time will be executed.<\/li>\n
    Finally is a block.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
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    Sample Code<\/h2>\n
     
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    \/\/ A Java program to demonstrate finally. class Wikitechy{          static void A()     {         try         {             System.out.println("inside A");             throw new RuntimeException("demo");         }         finally        {             System.out.println("A's finally");         }     }      static void B()     {         try         {             System.out.println("inside B");             return;         }         finally        {             System.out.println("B's finally");         }     }       public static void main(String args[])     {         try         {             A();         }         catch (Exception e)         {             System.out.println("Exception caught");         }         B();     } } <\/code><\/pre> <\/div>\n
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    Output<\/h2>\n<\/div>\n<\/div>\n
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    inside A\r\nA's finally\r\nException caught\r\ninside B\r\nB'<\/span>s finally\r\n<\/span><\/code><\/pre>\n<\/figure>\n<\/div>\n<\/div>\n
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    Finalize<\/h2>\n<\/div>\n<\/div>\n
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    Finalize is using for the processing of clean up to be perform just before object is garbage collected.<\/li>\n
    Finalize is a method.<\/li>\n
    Once finalize method completes immediately Garbage Collector destroy that object.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
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    Syntax<\/h2>\n
     
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    protected void finalize throws Throwable{}<\/code><\/pre> <\/div>\n
    Sample Code<\/h2>\n
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    class Wikitechy {     public static void main(String[] args)     {         String s = new String("RR");         s = null;           \/\/ Requesting JVM to call Garbage Collector method         System.gc();         System.out.println("Main Completes");     }       \/\/ Here overriding finalize method     public void finalize()     {         System.out.println("finalize method overriden");     } } <\/code><\/pre> <\/div>\n<\/div>\n<\/div>\n
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    Output<\/h2>\n<\/div>\n<\/div>\n
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    Main Completes<\/span><\/code><\/pre>\n<\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
    Answer : Final is used to apply limitations on class, method and variable…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[4004],"tags":[195,491,360,203,199,214,198,363,209,15937,205,4139,4144,4150,4143,4140,4142,4141,4138,2936,222,196,212,213,4145,4146,4147,4148,286,207,366,204,217,282,4023,483,206,4149,200,197,280,364,4137,968],"class_list":["post-642","post","type-post","status-publish","format-standard","hentry","category-java","tag-accenture-interview-questions-and-answers","tag-applied-materials-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-cgi-group-inc-interview-questions-and-answers","tag-chetu-interview-questions-and-answers","tag-ciena-corporation-interview-questions-and-answers","tag-collabera-technologies-interview-questions-and-answers","tag-dark-horse-digital-interview-questions-and-answers","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-final","tag-final-class","tag-final-definition","tag-final-keyword","tag-final-keyword-in-java","tag-final-walk-through","tag-final-walk-through-checklist","tag-finally-and-finalize","tag-fis-global-business-solutions-india-pvt-ltd-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-infosys-technologies-interview-questions-and-answers","tag-java-final","tag-java-final-variable","tag-java-finally","tag-java-static-final","tag-lt-infotech-interview-questions-and-answers","tag-mphasis-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-oracle-corporation-interview-questions-and-answers","tag-peoplestrong-interview-questions-and-answers","tag-persistent-systems-interview-questions-and-answers","tag-rbs-india-de-interview-questions-and-answers","tag-reliance-industries-ltd-interview-questions-and-answers","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-static-final","tag-tech-mahindra-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-virtusa-consulting-services-pvt-ltd-interview-questions-and-answers","tag-wells-fargo-interview-questions-and-answers","tag-what-is-final","tag-wipro-infotech-interview-questions-and-answers"],"yoast_head":"\n