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11 May, 13:36

Complete the following method that takes a String parameter that is a time in American 12 hour format, such as "06:12 PM." The method returns a String with the same time in standard international 24 hour form. For example, given the parameter in the example above, the method would return "18:12." Values with AM correspond to times from 00:00 to 11:59 and PM for times from 12:00 to 23:59. Recall the method Integer. parseInt () takes a String parameter and returns the integer equivalent. And then simply I am supposed to create a method like so ... public static String convertTime (String amerFormat) { }

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  1. 11 May, 14:12
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    public class AmericanTimeFormatting {

    public static String convertTime (String amerFormat)

    {

    if (amerFormat. length () <8) {

    System. out. println ("Length of the input string should be 8");

    return null;

    }

    else if (! Character. isDigit (amerFormat. charAt (0)) &&! Character. isDigit (amerFormat. charAt (1)) &&! Character. isDigit (amerFormat. charAt (3)) && Character. isDigit (amerFormat. charAt (4))) {

    System. out. println ("Digit is requird");

    return null;

    }

    else if (amerFormat. charAt (2) !=':'|| amerFormat. charAt (7) !='.') {

    System. out. println ("Punctuation required");

    return null;

    }

    //Am or Pm specification check

    else if (! amerFormat. substring (5,7). equals ("PM") &&! amerFormat. substring (5,7). equals ("AM")) {

    System. out. println ("Required PM or AM");

    return null;

    }

    else {

    //For PM

    if (amerFormat. substring (5,7). equals ("PM")) {

    String time="";

    int hour=Integer. parseInt (amerFormat. substring (0,2));

    hour=24 - (12-hour);

    time+=String. valueOf (hour) + ":";

    int minute=Integer. parseInt (amerFormat. substring (3,5));

    time+=minute;

    return time;

    }

    //For AM

    else {

    return amerFormat. substring (0,5);

    }

    }

    }

    public static void main (String[] args) {

    String time=convertTime ("06:12PM.");

    if (! time. equals (null)) {

    System. out. println ("Time is "+time);

    }

    }

    }
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