In this Tutorial, we will take a look at how to write in Simple Java SE JDBC a prepared Select Parameterized Select,
Table:CREATE TABLE `students` (
`student_id` int NOT NULL AUTO_INCREMENT,
`student_name` varchar(45) NOT NULL,
`student_dob` datetime NOT NULL,
`student_address` varchar(45) NOT NULL,
PRIMARY KEY (`student_id`,`student_dob`);
Data in the table:
select * from students;
+------------+--------------+---------------------+-----------------+
| student_id | student_name | student_dob | student_address |
+------------+--------------+---------------------+-----------------+
| 1 | Mike | 2001-07-22 00:00:00 | New York City |
| 2 | Alex | 2002-08-13 00:00:00 | Chicago |
| 3 | Sam | 2022-01-25 00:00:00 | Ohio |
+------------+--------------+---------------------+-----------------+
Java Example:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* Java SE JDBC Parameterized Select
* Query example.
*/
public class JavaJDBCParameterizedSelectExample {
private static final String MYSQL_JDBC_DRIVER_CLASS = "com.mysql.cj.jdbc.Driver";
private static final String MYSQL_DB_URL = "jdbc:mysql://localhost:3306/my_uat";
private static final String MYSQL_DB_USER = "root";
private static final String MYSQL_DB_USER_PASSWORD = "root123";
private static final String SQL_PARAMETERIZED_QUERY =
"SELECT * from students where student_name=? or student_address=?";
private static String studentName="Mike";
private static String studentAddress="Chicago";
public static void main(String[] args) {
try(Connection connection = DriverManager.getConnection(MYSQL_DB_URL,MYSQL_DB_USER,MYSQL_DB_USER_PASSWORD)) {
try {
Class.forName(MYSQL_JDBC_DRIVER_CLASS);
} catch (ClassNotFoundException e) {
System.out.println("Database Vendor Driver class not found!");
e.printStackTrace();
}
PreparedStatement statement = connection.prepareStatement(SQL_PARAMETERIZED_QUERY);
statement.setString(1, studentName);
statement.setString(2, studentAddress);
ResultSet resultSet = statement.executeQuery();
while(resultSet.next()) {
System.out.println(resultSet.getInt(1)+" "+
resultSet.getString(2)+" "+
resultSet.getDate(3)+" "+
resultSet.getString(4));
}
} catch (SQLException e) {
System.out.println("Error occured while executing query: " + SQL_PARAMETERIZED_QUERY);
e.printStackTrace();
}
}
}
Output:
1 Mike 2001-07-22 New York City
2 Alex 2002-08-13 Chicago
Facing issues? Have Questions? Post them here! I am happy to answer!
Author Info:
Rakesh (He/Him) has over 14+ years of experience in Web and Application development. He is the author of insightful How-To articles for Code2care.
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