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How to insert a record into a table in a database using JDBC API?
A. You can insert records in to a table using the INSERT query.
Syntax
INSERT INTO TABLE_NAME (column1, column2, column3,...columnN) VALUES (value1, value2, value3,...valueN); Or, INSERT INTO TABLE_NAME VALUES (value1, value2, value3,...valueN);
To insert a record into a table in a database using JDBC API you need to:
Register the driver: Register the driver class using the registerDriver() method of the DriverManager class. Pass the driver class name to it, as parameter.
Establish a connection: Connect ot the database using the getConnection() method of the DriverManager class. Passing URL (String), username (String), password (String) as parameters to it.
Create Statement: Create a Statement object using the createStatement() method of the Connection interface.
Execute the Query: Execute the query using the executeUpdate() method of the Statement interface.
Example
Assume we have a table named customers in the database with description as shown below:
+---------+---------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +---------+---------------+------+-----+---------+-------+ | ID | int(11) | NO | PRI | NULL | | | NAME | varchar(20) | NO | | NULL | | | AGE | int(11) | NO | | NULL | | | SALARY | decimal(18,2) | YES | | NULL | | | ADDRESS | char(25) | YES | | NULL | | +---------+---------------+------+-----+---------+-------+
Following JDBC program establishes connection with MySQL and inserts 12 records in the customers table:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
public class InsertRecordsExample {
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......");
//Creating the Statement
Statement stmt = con.createStatement();
//Query to insert records
String query = "INSERT INTO CUSTOMERS(" + "ID, Name, AGE, SALARY, ADDRESS) VALUES "
+ "(1, 'Amit', 25, 3000, 'Hyderabad'), "
+ "(2, 'Kalyan', 27, 4000, 'Vishakhapatnam'), "
+ "(3, 'Renuka', 30, 5000, 'Delhi'), "
+ "(4, 'Archana', 24, 1500, 'Mumbai'),"
+ "(5, 'Koushik', 30, 9000, 'Kota'),"
+ "(6, 'Hardik', 45, 6400, 'Bhopal'),"
+ "(7, 'Trupthi', 33, 4360, 'Ahmedabad'),"
+ "(8, 'Mithili', 26, 4100, 'Vijayawada'),"
+ "(9, 'Maneesh', 39, 4000, 'Hyderabad'),"
+ "(10, 'Rajaneesh', 30, 6400, 'Delhi'),"
+ "(11, 'Komal', 29, 8000, 'Ahmedabad'),"
+ "(12, 'Manyata', 25, 5000, 'Vijayawada')";
int i = stmt.executeUpdate(query);
System.out.println("Rows inserted: "+i);
}
}Output
Connection established...... Rows inserted: 12
If you verify the contents of the customers table using select statement, you can find the inserted records in it as:
mysql> select * from customers; +----+-----------+------+---------+----------------+ | ID | NAME | AGE | SALARY | ADDRESS | +----+-----------+------+---------+----------------+ | 1 | Amit | 25 | 3000.00 | Hyderabad | | 2 | Kalyan | 27 | 4000.00 | Vishakhapatnam | | 3 | Renuka | 30 | 5000.00 | Delhi | | 4 | Archana | 24 | 1500.00 | Mumbai | | 5 | Koushik | 30 | 9000.00 | Kota | | 6 | Hardik | 45 | 6400.00 | Bhopal | | 7 | Trupthi | 33 | 4360.00 | Ahmedabad | | 8 | Mithili | 26 | 4100.00 | Vijayawada | | 9 | Maneesh | 39 | 4000.00 | Hyderabad | | 10 | Rajaneesh | 30 | 6400.00 | Delhi | | 11 | Komal | 29 | 8000.00 | Ahmedabad | | 12 | Manyata | 25 | 5000.00 | Vijayawada | +----+-----------+------+---------+----------------+ 12 rows in set (0.06 sec)
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