{"id":8502,"date":"2022-09-14T00:07:45","date_gmt":"2022-09-13T18:37:45","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-verification-for-register-does-not-work-java\/"},"modified":"2022-09-14T00:07:45","modified_gmt":"2022-09-13T18:37:45","slug":"solved-verification-for-register-does-not-work-java","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-verification-for-register-does-not-work-java\/","title":{"rendered":"[Solved] Verification for register does not work java"},"content":{"rendered":"

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You are obviously not showing all the pertinent code or you simply have neglected to place the needed code into your method that should make this work.<\/p>\n

A ResultSet<\/a> is basically a collection of results from your query which you need to iterate through to access all results from that query. A while<\/strong> loop is widely used as the means to iterate through all the results contained within a result set object. I see nowhere in your code where you have declared a ResultSet Object but yet you are trying to utilize one. Perhaps try something like this:<\/p>\n

String email = email_register_txt.getText();\nString username = username_register_txt.getText();\n\ntry {\n    Connection conn = DriverManager.getConnection(\"...your jdbc connection string...\");\n    conn.setAutoCommit(false);\n\n    String sql = \"SELECT * FROM user_profile WHERE username = ? OR user_email = ?\";\n    PreparedStatement stmt = conn.prepareStatement(sql);\n    stmt.setString(1, username);\n    stmt.setString(2, email);\n\n    ResultSet res = stmt.executeQuery();\n\n    \/\/ Utilize a boolean Flag to indicate whether \n    \/\/ or not the User is registered.\n    boolean registered = false; \n    while (res.next()) {\n        if(res.getString(\"username\").equalsIgnoreCase(username)) {\n            JOptionPane.showMessageDialog(registerPanel, \n                    \"The username has already been already registered!\");\n            registered = true;\n            break; \/\/ Get out of the loop. No more need for it.\n        }\n        else if(res.getString(\"user_email\").equalsIgnoreCase(email)) {\n            JOptionPane.showMessageDialog(registerPanel, \n                    \"This email address has already been already registered!\");\n            registered = true;\n            break; \/\/ Get out of the loop. No more need for it.\n        }\n    }\n\n    \/\/ Do what needs to be done if User is NOT registered.\n    if (!registered) {\n        ...............................\n        ...............................\n    }\n    res.close();\n    stmt.close();\n    conn.close(); \/\/Close the DB connection\n}\ncatch (SQLException ex) {\n    ex.printStackTrace();\n}\n<\/code><\/pre>\n
You will notice the use of the PreparedStatement<\/a> Class. There are a number of benefits for using this class:<\/p>\n
1) PreparedStatement<\/strong> allows you to write dynamic and parametric queries.<\/p>\n
2) PreparedStatement<\/strong> is faster than Statement<\/strong> in Java.<\/p>\n
3) PreparedStatement<\/strong> prevents SQL Injection Attacks<\/strong> in Java<\/p>\n
Read more about Why to use Prepared Statements in Java here<\/a>.<\/p>\n<\/p><\/div>\n
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            1<\/span> <\/p><\/div>\n<\/div>\n
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solved Verification for register does not work java <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] You are obviously not showing all the pertinent code or you simply have neglected to place the needed code into your method that should make this work. A ResultSet is basically a collection of results from your query which you need to iterate through to access all results from that query. A while loop … 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":[323],"class_list":["post-8502","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java"],"yoast_head":"\n[Solved] Verification for register does not work java - 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-verification-for-register-does-not-work-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Verification for register does not work java - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You are obviously not showing all the pertinent code or you simply have neglected to place the needed code into your method that should make this work. 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