/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.text.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String s = "10:15 AM";
		SimpleDateFormat sdf = new SimpleDateFormat("hh:mm a");
        sdf.setLenient(false);
        try {
           Date dt2 = sdf.parse(s);
           System.out.println(dt2);
        }
        catch (Exception exc) {
        	System.out.println(s + " IS NOT VALID TIME");
        }
 
        //Regex
        String pat = "[0-1]?[0-2]:[0-5][0-9]\\s*[Aa][Mm]";
        if (s.matches(pat)){
        	System.out.println("Regex matches the string!");
        }
 
	}
}

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