{"id":7226,"date":"2022-09-07T15:15:34","date_gmt":"2022-09-07T09:45:34","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-adding-objects-to-arraylist-duplicate\/"},"modified":"2022-09-07T15:15:34","modified_gmt":"2022-09-07T09:45:34","slug":"solved-adding-objects-to-arraylist-duplicate","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-adding-objects-to-arraylist-duplicate\/","title":{"rendered":"[Solved] Adding objects to ArrayList [duplicate]"},"content":{"rendered":"

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If I understand the problem correctly, you have 6 Publication<\/code> objects, and you are only seeing the values of the most recently created one. <\/p>\n

That would likely be caused because you have static<\/code> class<\/strong> variables instead of instance<\/strong> variables. <\/p>\n

For example<\/p>\n

class A {\n    static int x; \/\/ class variable\n    int y;        \/\/ instance variable\n\n    public A(int val) {\n        x = val; \/\/ All 'A' classes now have x = val;\n        y = val; \/\/ Only 'this' class has y = val;\n    }\n}\n<\/code><\/pre>\n
If I were to run this<\/p>\n
A a1 = new A(4);\nA a2 = new A(5);\nSystem.out.println(a1.x);\n<\/code><\/pre>\n
Then I would see it print 5 and not 4, which describes the scenario you are seeing because you have assigned all variables in the Publication class to those that you use during the last call of new Periodical<\/code>. <\/p>\n
The solution is to not use static<\/code> variables if you want to have multiple instances of a class with their own values. <\/p>\n<\/p><\/div>\n
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            2<\/span> <\/p><\/div>\n<\/div>\n
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solved Adding objects to ArrayList [duplicate] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] If I understand the problem correctly, you have 6 Publication objects, and you are only seeing the values of the most recently created one. That would likely be caused because you have static class variables instead of instance variables. For example class A { static int x; \/\/ class variable int y; \/\/ instance … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[479,790,323,430,547],"class_list":["post-7226","post","type-post","status-publish","format-standard","hentry","category-solved","tag-arraylist","tag-foreach","tag-java","tag-object","tag-oop"],"yoast_head":"\n[Solved] Adding objects to ArrayList [duplicate] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-adding-objects-to-arraylist-duplicate\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Adding objects to ArrayList [duplicate] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] If I understand the problem correctly, you have 6 Publication objects, and you are only seeing the values of the most recently created one. 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