Android : Convert String to Date and Date to String

From String to Date

String dtStart = "2010-10-15T09:27:37Z";  
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");  
try {  
    Date date = format.parse(dtStart);  
    System.out.println(date);  
} catch (ParseException e) {  
    // TODO Auto-generated catch block  
    e.printStackTrace();  
}

From Date to String

SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");  
try {  
    Date date = new Date();  
    String datetime = dateFormat.format(date);
    System.out.println("Current Date Time : " + datetime); 
} catch (ParseException e) {  
    // TODO Auto-generated catch block  
    e.printStackTrace();  
}

ที่มา: http://stackoverflow.com/questions/8573250/android-how-can-i-convert-string-to-date