Time Conversion

Given a time in 12-hour AM/PM format, convert it to military(24-hour) time.

Note: Midnight is 12:00:00AM on a 12-hourclock, and 00:00:00 on a 24-hour clock. Noon is 12:00:00PM on a12-hour clock, and 12:00:00 on a 24-hour clock.

Input:

A single line containing string str, containing a time in12-hour clock format.

Output:

Convert and print the given time in 24-hour format.

Examples:

Input:

07:05:45PM

Output:

19:05:45

My question is :
develop a java program codefor it

and please I don't want the old solutions from chegg or anyother website