public static String timeConversion(String s) {
    String format  =  s.substring(8);
    int hours  =  Integer.parseInt(s.substring(0,2));
    String military  =  "";
		
    DecimalFormat df = new DecimalFormat("00");
    if(format.equals("PM")){
        if(hours >= 1 &&  hours  <= 11)
            hours = hours+12;
        military = df.format(hours)+s.substring(2,8);
    }
    else{
        if(hours == 12)
            hours = 0;
        military = df.format(hours)+s.substring(2,8);
    }
    return military;
    }