Java sql.Time valueOf() method with example

In this program, we'll demonstrate how to insert and retrieve records from a MySQL database using JDBC . Specifically, we'll focus on how to convert a time value from a String format into a java.sql.Time object using the valueOf() method. This allows us to store time values in a database and retrieve them accurately.

Time time = Time.valueOf("time_string");

Steps to Use sql.Time valueOf() Method

Following are the steps to use sql.Time valueOf() method ?

• Import all the useful classes.
• Register the Driver by loading the MySQL JDBC driver.
• Establish a connection by connecting to the MySQL database using DriverManager.
• Prepare SQL query and define an SQL query to insert data into the dispatches table.
• Convert and insert time convert the time string to a Time object using Time.valueOf() and insert it.
• Execute the query by running the query to insert the record.
• Retrieve and display records by executing a query to retrieve all records and print them.

Inserting and retrieving records using Java sql.Time valueOf() method

Let us create a table with name dispatches in MySQL database using the CREATE statement as follows ?

CREATE TABLE dispatches(
   ProductName VARCHAR(255),
   CustomerName VARCHAR(255),
   DispatchDate date,
   DeliveryTime time,
   Price INT,
   Location VARCHAR(255));

Now, we will insert 5 records in dispatches table using INSERT statements ?

insert into dispatches values('Key-Board', 'Raja', DATE('2019-09-01'), TIME('11:00:00'), 7000, 'Hyderabad');
insert into dispatches values('Earphones', 'Roja', DATE('2019-05-01'), TIME('11:00:00'), 2000, 'Vishakhapatnam');
insert into dispatches values('Mouse', 'Puja', DATE('2019-03-01'), TIME('10:59:59'), 3000, 'Vijayawada');
insert into dispatches values('Mobile', 'Vanaja', DATE('2019-03-01'), TIME('10:10:52'), 9000, 'Chennai');
insert into dispatches values('Headset', 'Jalaja', DATE('2019-04-06'), TIME('11:08:59'), 6000, 'Goa');

Following the JDBC program establishes a connection with the database and inserts a new record into the dispatches table.

import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Time;
public class Time_valueOf {
   public static void main(String args[]) throws SQLException {
      //Registering the Driver
      DriverManager.registerDriver(new com.mysql.jdbc.Driver());
      //Getting the connection
      String mysqlUrl = "jdbc:mysql://localhost/mydatabase";
      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, "Watch");
      pstmt.setString(2, "Rajan");
      pstmt.setDate(3, new Date(1567315800000L));
      Time time = Time.valueOf("10:59:59");
      pstmt.setTime(4, time);
      pstmt.setInt(5, 4000);
      pstmt.setString(6, "Chennai");
      pstmt.execute();
      //Retrieving data
      Statement stmt = con.createStatement();
      ResultSet rs = stmt.executeQuery("select * from dispatches");
      while(rs.next()) {
         System.out.print("Name: "+rs.getString("ProductName")+", ");
         System.out.print("Customer Name: "+rs.getString("CustomerName")+", ");
         System.out.print("Dispatch Date: "+rs.getDate("DispatchDate")+", ");
         System.out.print("Delivery Time: "+rs.getTime("DeliveryTime")+", ");
         System.out.print("Price: "+rs.getInt("Price")+", ");
         System.out.print("Location: "+rs.getString("Location"));
         System.out.println();
      }
   }
}

Here, in this program, we are taking the time value in String format and converting it into the java.util.Time object using the valueOf() method.

Output

Connection established......
Name: Key-Board, Customer Name: Raja, Dispatch Date: 2019-09-01, Delivery Time: 11:00:00, Price: 7000, Location: Hyderabad,
Name: Earphones, Customer Name: Roja, Dispatch Date: 2019-05-01, Delivery Time: 11:00:00, Price: 2000, Location: Vishakhapatnam,
Name: Mouse, Customer Name: Puja, Dispatch Date: 2019-03-01, Delivery Time: 10:59:59, Price: 3000, Location: Vijayawada,
Name: Mobile, Customer Name: Vanaja, Dispatch Date: 2019-03-01, Delivery Time: 10:10:52, Price: 9000, Location: Chennai,
Name: Headset, Customer Name: Jalaja, Dispatch Date: 2019-04-06, Delivery Time: 11:08:59, Price: 6000, Location: Goa,
Name: Watch, Customer Name: Rajan, Dispatch Date: 2019-09-01, Delivery Time: 10:59:59, Price: 4000, Location: Chennai