You can use java Calendar class to get everything about Time and Date:
System.out.println("0"+Calendar.getInstance().get(Calendar.DAY_OF_MONTH)+"0"
                         + (Calendar.getInstance().get(Calendar.MONTH)+1) +"0"+
                         Calendar.getInstance().get(Calendar.YEAR));
Using String Format:
import java.util.Calendar;
public class PrintDate {
  public PrintDate(){
     //Create this for later
     String year =String.valueOf(Calendar.getInstance().get(Calendar.YEAR)); //Keeping the year 2015
     //Format the date to keep it in a single String
     String date = String.format("0%d0%d%d",
                Calendar.getInstance().get(Calendar.DAY_OF_MONTH),
                (Calendar.getInstance().get(Calendar.MONTH)+1), //Cause the Calendar has January as (0) i add +1
                Integer.valueOf(year.substring(1,4)));  //Make it from 2015 to 15 using Substring Method
     System.out.println(date);
  }
  public static void main(String[] args){
     new PrintDate();
  }
}
solved How to output java date format as 060115 [duplicate]