The time my application displays does not change

I have a program which should display the current time. It displays the right time immediately after I install it to a phone. But after that, whenever I run the application, the time doesn't change at all.

Here's my code:

Calendar cal = new GregorianCalendar();
hour = cal.get(Calendar.HOUR);
minute = cal.get(Calendar.MINUTE);
second = cal.get(Calendar.SECOND);
year = cal.get(Calendar.YEAR);
month = 开发者_运维百科cal.get(Calendar.MONTH)+1;
day = cal.get(Calendar.DATE);
date = day+"_"+month+"_"+year+"_";
Current_Time = date+ hour + "_" + minute + "_" + second;

Shekhar... I had the same misunderstanding. When you create an instance of calendar, it represents the date at which it was instantiated and that state does not change! So, to get the current "date" you need to create a new instance.

JAL

You can write it as a method. Each call to create a new instance of the Calendar