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) { }

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);

}

}

}