Converting a Date object to a calendar object

Calendar cal = Calendar.getInstance();
   cal.setTime(date);
   cal.set(Calendar.HOUR_OF_DAY, 0);
   cal.set(Calendar.MINUTE, 0);    
   cal.set(Calendar.SECOND, 0);    
   cal.set(Calendar.MILLISECOND, 0);    
          
   return cal.getTime();

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Compare Two Date In Java

public static void main( String[] args ) 
    {
     try{
 
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
         Date date1 = sdf.parse("2009-12-31");
         Date date2 = sdf.parse("2010-01-31");
 
         System.out.println(sdf.format(date1));
         System.out.println(sdf.format(date2));
 
         if(date1.compareTo(date2)>0){
          System.out.println("Date1 is after Date2");
         }else if(date1.compareTo(date2)<0){
          System.out.println("Date1 is before Date2");
         }else if(date1.compareTo(date2)==0){
          System.out.println("Date1 is equal to Date2");
         }else{
          System.out.println("How to get here?");
         }
 
     }catch(ParseException ex){
      ex.printStackTrace();
     }
    }

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String to Date Conversion in Java

//String to Date Conversion
 stringDate = "10-04-2013";

 public Date stringToDate(String stringDate)
 {
  Date date = null;
  try {
   SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
   date = sdf.parse(stringDate);
   System.out.println(date);
   return date;
  } catch (ParseException e) {
   e.printStackTrace();
   return date;
  }
 }

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Timestamp to Date Conversion In Java

Use This Import.

import java.sql.Timestamp;

//Timestamp to Date Conversion
 public Date timeStampToDate(Timestamp timestamp)
 {
  Date date = null;
  try
  {
    date = new Date(timestamp.getTime());
    return date;
  }catch (Exception e) {
   e.printStackTrace();
   return date;
  }
 }

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