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Several ways to format Android time

Android Several ways to format time , The following code is Android 6.0 API 23 Available on :  

// method 0  Format current time 
String currentDateTimeString =
        new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.US).format(new Date());

// method 1  Format current time 
currentDateTimeString =
        new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.US).
format(Calendar.getInstance().getTime());

// method 2  Format current time 
Date date0 = new Date();
CharSequence s = DateFormat.format("yyyy-MM-dd hh:mm:ss", date0.getTime());
currentDateTimeString = String.valueOf(s);

// method 3  Format current time 
Calendar calendar = Calendar.getInstance();
currentDateTimeString = calendar.get(Calendar.YEAR) + "/";
currentDateTimeString += calendar.get(Calendar.MONTH) + 1 + "/";
currentDateTimeString += calendar.get(Calendar.DAY_OF_MONTH) + " ";
currentDateTimeString += calendar.get(Calendar.HOUR_OF_DAY) + ":";
currentDateTimeString += calendar.get(Calendar.MINUTE) + ":";
currentDateTimeString += calendar.get(Calendar.SECOND);

// method 4  Format the specified time , This is also the current time 
long time = System.currentTimeMillis();
SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.US);
Date date1 = new Date(time);
currentDateTimeString = format.format(date1);

 

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