SimpleDateFormat is Case Sensitive

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import com.documentum.fc.common.DfTime;
import com.documentum.fc.common.IDfTime;


public class SimpleDateFormatTest {
    
    public static void main(String args[]){
        DateFormat formatInValid=new SimpleDateFormat("mm/dd/yyyy");
        DateFormat formatValid=new SimpleDateFormat("MM/dd/yyyy");
        Date givenDate = null;
        Date currentDate = null;
        try {
            
            givenDate =(Date)formatInValid.parse("01/16/2013");
            
            currentDate=(Date)formatInValid.parse(new DfTime().asString(IDfTime.DF_TIME_PATTERN2));// 02/01/2013
        
            System.out.println("Is 01/16/2013 after 02/01/2013 ?");
            System.out.println("Expecting result : false");
            
            System.out.println("Actual output of SimpleDateFormat mm/dd/yyyy (mm is the lower case): "+givenDate.after(currentDate));
            
            givenDate =(Date)formatValid.parse("01/16/2013");
            currentDate=(Date)formatValid.parse(new DfTime().asString(IDfTime.DF_TIME_PATTERN2));
            System.out.println("Actual output of SimpleDateFormat MM/dd/yyyy (MM is the upper case): "+givenDate.after(currentDate));
            
            
        } catch (ParseException e) {
            //Todo
        }
        
        
    }

}