{"id":4541,"date":"2021-05-28T06:35:17","date_gmt":"2021-05-28T06:35:17","guid":{"rendered":"http:\/\/mauricemuteti.info\/?p=4541"},"modified":"2021-05-28T08:24:50","modified_gmt":"2021-05-28T08:24:50","slug":"how-to-convert-time-from-12-hour-to-24-hour","status":"publish","type":"post","link":"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/","title":{"rendered":"How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_49 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"ez-toc-toggle-icon-1\"><label for=\"item-6766f97a8e403\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input  type=\"checkbox\" id=\"item-6766f97a8e403\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#How_To_Convert_Time_From_12_Hour_To_24_Hour_In_Java_Console_Menu_Driven_User_Interface\" title=\"How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface\">How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#TwelveHourToTwetyFourHourjava\" title=\"TwelveHourToTwetyFourHour.java\">TwelveHourToTwetyFourHour.java<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#Console_Menu_Driven_User_Interface_SOURCE_CODE\" title=\"Console Menu Driven User Interface SOURCE CODE\">Console Menu Driven User Interface SOURCE CODE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#TwelveHourToTwetyFourHourjava-2\" title=\"TwelveHourToTwetyFourHour.java\">TwelveHourToTwetyFourHour.java<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#InvalidHrExcepjava\" title=\"InvalidHrExcep.java\">InvalidHrExcep.java<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#InvalidMinExcepjava\" title=\"InvalidMinExcep.java\">InvalidMinExcep.java<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#InvalidSecExcepjava\" title=\"InvalidSecExcep.java\">InvalidSecExcep.java<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#NEBEANS_IDE_OUTPUT\" title=\"NEBEANS IDE OUTPUT\">NEBEANS IDE OUTPUT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#NETBEANS_OUTPUT_2\" title=\"NETBEANS OUTPUT 2\">NETBEANS OUTPUT 2<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#SCREENSHOTS\" title=\"SCREENSHOTS\">SCREENSHOTS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/#VIDEO_TUTORIALDEMO\" title=\"VIDEO TUTORIAL\/DEMO\">VIDEO TUTORIAL\/DEMO<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"How_To_Convert_Time_From_12_Hour_To_24_Hour_In_Java_Console_Menu_Driven_User_Interface\"><\/span>How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"TwelveHourToTwetyFourHourjava\"><\/span>TwelveHourToTwetyFourHour.java<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><\/p>\n\n\n\n<p>This is a menu driven Java program that prompts user to enter hours, minutes seconds AM\/PM and converts the time to 24 hour clock format..<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Console_Menu_Driven_User_Interface_SOURCE_CODE\"><\/span>Console Menu Driven User Interface SOURCE CODE<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"TwelveHourToTwetyFourHourjava-2\"><\/span>TwelveHourToTwetyFourHour.java<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\n\/*\n * How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface\n * https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/\n *\/\npackage pkg12to24hoursconvertor;\n\nimport java.util.Scanner;\n\n\/**\n *\n * @author HP\n *\/\npublic class TwelveHourToTwetyFourHour {\n\n    private static Scanner keyboard;\n\n    public static void main(String[] args) {\n        \/\/Creating Scanner Object\n        keyboard = new Scanner(System.in);\n        \/\/Creating hour variable and invoking getHours() Static Method To prompt for user input.\n        int hr = getHours();\n        \/\/Creating minute variable and invoking getMinutes() Static Method To prompt for user input.\n        int min = getMinutes();\n        \/\/Creating second variable and invoking getSeconds() Static Method To prompt for user input.\n        int sec = getSeconds();\n        \/\/Declaring am pm string variable.\n        String amOrPm;\n\n        keyboard.nextLine();\n        System.out.print(&quot;Enter AM or PM: &quot;);\n        \/\/Prompting user to enter either am or pm.\n        amOrPm = keyboard.nextLine();\n        \/\/Invoking print24HourTime Static Method to convert time to 24 hours and print the output on the keyboard.\n        \/\/Arguments passed are hours, minutes, seconds, am\/pm.\n        print24HourTime(hr, min, sec, amOrPm);\n\n    }\n\n    \/**\n     * Method for getting hours from user input and validating the input.\n     *\n     * Hours must range from zero to 12. Anything out of that range throws a\n     * custom exception.\n     *\n     * @return\n     *\/\n    public static int getHours() {\n\n        \/\/Creating hours variable.\n        int hours = 0;\n        \/\/Creating success boolean variable.\n        boolean success = false;\n        \/\/While loop - this loops until user enters a value in the range between 0 and 12.\n        while (!success) { \/\/Loop so long as success variable is not true\n            \/\/try catch block.\n            try {\n                \/\/Printing Enter hours on the console.\n                System.out.print(&quot;Enter hours: &quot;);\n                hours = keyboard.nextInt(); \/\/ get hours from user input\n                if (hours &amp;gt;= 0 &amp;amp;&amp;amp; hours &amp;lt;= 12) \/\/ check hours is between 0 and 12 or not\n                {\n                    \/\/Changing success value to true.\n                    success = true;\n                } else {\n                    \/\/Thowing exception.\n                    throw new InvalidHrExcep(&quot;The value of hours must be between 0 and 12.&quot;); \/\/ throw exception\n                }\n            } catch (InvalidHrExcep e) {\n                System.out.println(e); \/\/ print (InvalidHrExcep) exception message\n            }\n        }\n        return hours; \/\/ return hour\n    }\n\n    \/**\n     * Method for getting minutes from user input and validating the input.\n     *\n     * This method gets user in put from the console and loops until user enters\n     * values within the required range.\n     *\n     * @return\n     *\/\n    public static int getMinutes() {\n\n        \/\/Creating minutes variable.\n        int minutes = 0;\n        boolean success = false;\n        \/\/While loop - this loops until user enters a value in the range between 0 and 60.\n        while (!success) { \/\/Loop so long as success variable is not true\n            try {\n                System.out.print(&quot;Enter minutes: &quot;);\n                minutes = keyboard.nextInt(); \/\/ get minutes from user input\n                if (minutes &amp;gt;= 0 &amp;amp;&amp;amp; minutes &amp;lt;= 60) \/\/ check minutes is between 0 and 60 or not\n                {\n                    success = true;\n                } else {\n                    throw new InvalidMinExcep(&quot;The value of minutes must be between 0 and 60.&quot;); \/\/ throw exception\n                }\n            } catch (InvalidMinExcep e) {\n                System.out.println(e);\/\/ print (InvalidMinExcep) exception message\n            }\n        }\n        return minutes; \/\/ return minutes\n\n    }\n\n    \/**\n     * Method for getting seconds from user input and validating the input.\n     *\n     * @return\n     *\/\n    public static int getSeconds() {\n\n        \/\/Creating seconds integer variable.\n        int seconds = 0;\n        boolean success = false;\n        while (!success) { \/\/Loop so long as success variable is not true\n            try {\n                System.out.print(&quot;Enter seconds: &quot;);\n                seconds = keyboard.nextInt(); \/\/ get seconds from user input\n                if (seconds &amp;gt;= 0 &amp;amp;&amp;amp; seconds &amp;lt;= 60) \/\/ check seconds is between 0 and 60 or not\n                {\n                    success = true;\n                } else {\n                    throw new InvalidSecExcep(&quot;The value of minutes must be between 0 and 60.&quot;); \/\/ throw exception\n                }\n            } catch (InvalidSecExcep e) {\n                System.out.println(e);\/\/ print (InvalidSecExcep) exception message\n            }\n        }\n        return seconds; \/\/ return second\n    }\n\n    \/**\n     * Method for converting time to 24 hour clock.\n     *\n     * @param hr\n     * @param min\n     * @param sec\n     * @param str\n     *\/\n    public static void print24HourTime(int hr, int min, int sec, String str) {\n\n        \/\/checking if Minutes is less than 10 in order to add zero prefix to the minutes.\n        String zeroPrefixForMinutes = min &amp;lt; 10 ? &quot;0&quot; : &quot;&quot;;\n        \/\/checking if Seconds is less than 10 in order to add zero prefix to the seconds.\n        String zeroPrefixSeconds = sec &amp;lt; 10 ? &quot;0&quot; : &quot;&quot;;\n        \/\/Check if the str argument is either PM or AM.\n        if (str.toUpperCase().equals(&quot;AM&quot;)) {\n            \/\/If the hour is 12 change it to 0 so that it displays 00:00:00(Hours:minutes:Seconds). \n            \/\/This block changes 12 to 00 to imitate normal clock.\n            if (hr == 12) {\n                \/\/if hour is 12 change it to zero.\n                hr = 0;\n            }\n            \/\/checking if hour is less than 10 in order to add zero prefix to the hour.\n            String zeroPrefixForAM = hr &amp;lt; 10 ? &quot;0&quot; : &quot;&quot;;\n            \/\/Printing AM On the console\n            System.out.println(&quot;24 Hour Clock Time: &quot; + zeroPrefixForAM + hr + &quot;:&quot; + zeroPrefixForMinutes + min + &quot;:&quot; + zeroPrefixSeconds + sec);\n            \/\/if the str argument value is PM.\n        } else if (str.toUpperCase().equals(&quot;PM&quot;)) {\n            \/\/Printing PM On the console\n            System.out.println(&quot;24 Hour Clock Time: &quot; + (hr + 12) + &quot;:&quot; + zeroPrefixForMinutes + min + &quot;:&quot; + zeroPrefixSeconds + sec);\n        } else {\n            \/\/If user enters invalid PM AM output this message on the console.\n            System.out.println(&quot;Invalid AM or PM&quot;);\n        }\n    }\n}\n\n<\/pre>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"InvalidHrExcepjava\"><\/span>InvalidHrExcep.java<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<pre class=\"brush: java; title: ; notranslate\" title=\"\"> \/*\n * How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface\n * https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/\n *\/\npackage pkg12to24hoursconvertor;\n\n\/**\n *\n * @author HP\n *\/\npublic class InvalidHrExcep extends Exception {\n\n    private String message;\n\n    public InvalidHrExcep() {\n\n    }\n\n    \/**\n     *\n     * @param str\n     *\/\n    public InvalidHrExcep(String str) {\n\n        str = message;\n\n    }\n\n    public String getmessage() {\n\n        return message;\n\n    }\n\n    \/**\n     *\n     * @return\n     *\/\n    @Override\n    public String toString() {\n\n        return String.format(&quot;The value of hours must be between 0 and 12.&quot;);\n\n    }\n\n}\n <\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"InvalidMinExcepjava\"><\/span>InvalidMinExcep.java<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><\/p>\n\n\n<pre class=\"brush: java; title: ; notranslate\" title=\"\"> \/*\n * How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface\n * https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/\n *\/\npackage pkg12to24hoursconvertor;\n\n\/**\n *\n * @author HP\n *\/\npublic class InvalidMinExcep extends Exception {\n\n    private String message;\n\n    public InvalidMinExcep() {\n\n    }\n\n    \/**\n     * \n     * @param str \n     *\/\n    public InvalidMinExcep(String str) {\n\n        str = message;\n\n    }\n\n    public String getmessage() {\n\n        return message;\n\n    }\n\n    \/**\n     * \n     * @return \n     *\/\n    @Override\n    public String toString() {\n\n        return String.format(&quot;The value of minutes must be between 0 and 60.&quot;);\n\n    }\n\n}\n <\/pre>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"InvalidSecExcepjava\"><\/span>InvalidSecExcep.java<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<pre class=\"brush: java; title: ; notranslate\" title=\"\"> \/*\n * How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface\n * https:\/\/mauricemuteti.info\/how-to-convert-time-from-12-hour-to-24-hour\/\n *\/\npackage pkg12to24hoursconvertor;\n\n\/**\n *\n * @author HP\n *\/\npublic class InvalidSecExcep extends Exception {\n\n    private String message;\n\n    public InvalidSecExcep() {\n\n    }\n\n    \/**\n     * \n     * @param str \n     *\/\n    public InvalidSecExcep(String str) {\n\n        str = message;\n\n    }\n\n    public String getmessage() {\n\n        return message;\n\n    }\n\n    \/**\n     * \n     * @return \n     *\/\n    @Override\n    public String toString() {\n\n        return String.format(&quot;The value of seconds must be between 0 and 60.&quot;);\n\n    }\n\n}\n <\/pre>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"NEBEANS_IDE_OUTPUT\"><\/span>NEBEANS IDE OUTPUT<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nrun:\nEnter hours: 12\nEnter minutes: 7\nEnter seconds: 8\nEnter AM or PM: AM\n24 Hour Clock Time: 00:07:08\nBUILD SUCCESSFUL (total time: 2 minutes 44 seconds)\n\n<\/pre><\/div>\n\n\n<h2><span class=\"ez-toc-section\" id=\"NETBEANS_OUTPUT_2\"><\/span>NETBEANS OUTPUT 2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nrun:\nEnter hours: 12\nEnter minutes: 6\nEnter seconds: 7\nEnter AM or PM: PM\n24 Hour Clock Time: 24:06:07\nBUILD SUCCESSFUL (total time: 7 seconds)\n\n<\/pre><\/div>\n\n\n<pre class=\"wp-block-code\"><code><\/code><\/pre>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"SCREENSHOTS\"><\/span>SCREENSHOTS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"626\" height=\"426\" src=\"https:\/\/mauricemuteti.info\/wp-content\/uploads\/2021\/05\/12To24HoursConvertor-Java-1.png\" alt=\"How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface\" class=\"wp-image-4557\" srcset=\"https:\/\/mauricemuteti.info\/wp-content\/uploads\/2021\/05\/12To24HoursConvertor-Java-1.png 626w, https:\/\/mauricemuteti.info\/wp-content\/uploads\/2021\/05\/12To24HoursConvertor-Java-1-300x204.png 300w\" sizes=\"(max-width: 626px) 100vw, 626px\" \/><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"VIDEO_TUTORIALDEMO\"><\/span>VIDEO TUTORIAL\/DEMO<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h2><\/h2>\n","protected":false},"excerpt":{"rendered":"<p>How To Convert Time From 12 Hour To 24 Hour In Java Console Menu Driven User Interface TwelveHourToTwetyFourHour.java This is a menu driven Java program&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/posts\/4541"}],"collection":[{"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/comments?post=4541"}],"version-history":[{"count":0,"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/posts\/4541\/revisions"}],"wp:attachment":[{"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/media?parent=4541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/categories?post=4541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mauricemuteti.info\/wp-json\/wp\/v2\/tags?post=4541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}