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GET DATE in JDBC

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This example shows how to retrieve date from existing table of MySql database. Date functions can be used in the SELECT statement or in the WHERE clause of a Query.

GET DATE in JDBC

  

This example shows how to retrieve date from existing table of MySql database. Date functions can be used in the SELECT statement or in the WHERE clause of a Query. Various date functions of Date are-

ADDDATE()
This function is used for add date to any other date.

ADDTIME()
This function is used for add time.

CURDATE(), CURRENTDATE(), CURRENTDATE
These three are synonyms, are used for display the current date.

CURRENTTIME(), CURRENTTIME, CURTIME()
These are same used for current time.

DATE_ADD()
This is used for adding two dates.

DATEDIFF()
This is used for subtraction of two dates.

DAY(), DAYOFMONTH()
It shows the day of month from 1 to 31.

DAYNAME()
It shows the name of the weekday.

DAYOFWEEK()
It returns the index of weekdays.

DAYOFYEAR()
It returns the day of year from 1 to 366.

LASTDAY()
It returns the last day of the month.

LOCALTIME(),LOCALTIMESTAMP(),NOW()
It returns the current date and time.

MONTH()
It returns the month from the date has gone.

MONTHNAME()
It returns the name of the month.

SECOND()
It returns the seconds from 0 to 59.

STR_TO_DATE()
It converts a string to a date.

SYSDATE()
It returns the time of execution the function.

TIMEDIFF()
It returns the diffrence of time.

WEEK()
It returns the week number.

WEEKDAY()
It returns the weekday index.

WEEKOFYEAR()
It returns the week of year from 1 to 53.

YEAR()
It returns the year.

YEARWEEK()
It returns the year and week.

GetDate.java

import java.sql.*;
import java.io.*;
public class GetDate {
  public static void main(String a[])
  {
 Connection con = null;
 String url = "jdbc:mysql://lacalhost:3306/";
 String dbName = "vineej";
 String driver = "com.mysql.jdbc.Driver";
 String userName = "vineej";
 String password = "no";
 try {
  Class.forName(driver).newInstance();
  con = DriverManager.getConnection
  (url+dbName,userName,password);

  Statement st = con.createStatement();
  ResultSet rs= st.executeQuery("select Dates 
  from Student where Name ='Ravi'"
);
  while(rs.next()) {
  String data = rs.getString(1);
  System.out.println(data);
  }
  System.out.println("Results");
  st.close();
  }
  catch( Exception e ) {
  System.out.println(e.getMessage());
  e.printStackTrace();
  }
 }
}


Description of the Program
This program is concern with retrieve the date from existing table in the database. Student is the of a table and ravi is the name of a student. Dates is the field in table from where we can retrieve the date.When the query successfully executed it will shows "Results".

Description of code

1.
First in the program we import the java.sql and java.io packages then define the GetDate class.

import java.sql.*;
import java.io.*;

2.Create a connection with MySql database

con = DriverManager.getConnection(url+dbName,userName,password);

3.Create statement and then execute query with the SELECT statement.

Statement st = con.createStatement();
ResultSet rs = st.executeQuery("select Dates from Student where Name ='Ravi");

4.Finally got the result by the getString() method.

while( rs.next() ) {
String data = rs.getString(1);
System.out.println( data ); 
}

5. After all connection should be closed.

con.close();

6. printStackTrace() method
The method is used to show error messages. If the connection is not connected then it throws the exception and print the message.

Download Source Code:

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Posted on: July 17, 2008

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