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How to insert Timestamp value in a database using JDBC program?
Timestamp datatype in SQL is similar to Date (in SQL) both store day:month:year:hour:minute:second. In addition to this timestamp stores fractional seconds too.
Inserting Timestamp in to a database
The PreparedStatement interface provides a method named setTimestamp() this method accepts two parameters an integer variable representing the parameter index of the place holder at which you need to store the timestamp and a long variable representing the number of milliseconds from the epoch time(standard base time I.e. January 1, 1970, 00:00:00 GMT) to the required time.
Example
Assume we have a table in the database named dispatches with the following description −
+------------------+--------------+------+-----+-------------------+ | Field | Type | Null | Key | Default | +------------------+--------------+------+-----+-------------------+ | Product_Name | varchar(100) | YES | | NULL | | Name_Of_Customer | varchar(100) | YES | | NULL | | Time_Of_Dispatch | timestamp | NO | | CURRENT_TIMESTAMP | | Location | varchar(100) | YES | | NULL | +------------------+--------------+------+-----+-------------------+
As you can observe this table contains a column named Time_Of_Dispatch which stores a timestamp value.
We can store timestamp in to this using the setTimestamp() method of the PreparedStatement interface and retrieve it using the getTimestamp() method of the ResultSet interface.
Following JDBC program stores records into the dispatches table and retrieves them −
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.Timestamp;
public class TimeStampExample {
public static void main(String args[])throws Exception {
//Getting the connection
String mysqlUrl = "jdbc:mysql://localhost/sampledb";
Connection con = DriverManager.getConnection(mysqlUrl, "root", "password");
System.out.println("Connection established......");
//Inserting values to a table
String query = "INSERT INTO Dispatches VALUES (?, ?, ?, ?)";
PreparedStatement pstmt = con.prepareStatement(query);
pstmt.setString(1, "KeyBoard");
pstmt.setString(2, "Amith"); pstmt.setTimestamp(3, new Timestamp(1567296000000L));
pstmt.setString(4, "Hyderabad");
pstmt.execute();
pstmt.setString(1, "Earphones");
pstmt.setString(2, "Sumith"); pstmt.setTimestamp(3, new Timestamp(1556668800000L));
pstmt.setString(4, "Vishakhapatnam");
pstmt.execute();
pstmt.setString(1, "Mouse");
pstmt.setString(2, "Sudha"); pstmt.setTimestamp(3, new Timestamp(1551398399000L));
pstmt.setString(4, "Vijayawada");
pstmt.execute();
System.out.println("Records inserted......");
//Creating Statement object
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from Dispatches");
//Retrieving values
while(rs.next()) {
System.out.println("Product Name: "+rs.getString("Product_Name"));
System.out.println("Name Of The Customer: "+rs.getString("Name_Of_Customer"));
System.out.println("Time Of Dispatch: "+rs.getTimestamp("Time_Of_Dispatch"));
System.out.println("Location: "+rs.getString("Location"));
System.out.println();
}
}
}Output
Connection established...... Records inserted...... Product Name: KeyBoard Name Of The Customer: Amith Time Of Dispatch: 2019-09-01 05:30:00.0 Location: Hyderabad Product Name: Earphones Name Of The Customer: Sumith Time Of Dispatch: 2019-05-01 05:30:00.0 Location: Vishakhapatnam Product Name: Mouse Name Of The Customer: Sudha Time Of Dispatch: 2019-03-01 05:29:59.0 Location: Vijayawada
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