How to use prepared statement for select query in Java with MySQL?

MySQLMySQLi DatabaseJava 8

You need to use executeQuery() for this. The syntax is as follows −

yourPreparedStatementObject=yourConnectionObject.prepareStatement(yourQueryName);
yourresultSetObject=yourPreparedStatementObject.executeQuery();

Create a table in the database ‘sample’. The query to create a table is as follows −

mysql> create table JavaPreparedStatement
   -> (
   -> Id int,
   -> Name varchar(10),
   -> Age int
   -> );
Query OK, 0 rows affected (0.89 sec)

Insert some records in the table using insert command. The query is as follows −

mysql> insert into JavaPreparedStatement values(1,'Larry',23);
Query OK, 1 row affected (0.16 sec)
mysql> insert into JavaPreparedStatement values(2,'Sam',25);
Query OK, 1 row affected (0.21 sec)
mysql> insert into JavaPreparedStatement values(3,'Mike',26);
Query OK, 1 row affected (0.12 sec)

Now you can display all records of the table using Java PreparedStatement. You need to use the executeQuery() method.

Here is the Java code −

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class PreparedStatementSelectQueryDemo {
   public static void main(String[] args) {
      String JdbcURL = "jdbc:mysql://localhost:3306/sample?useSSL=false";
      String Username = "root";
      String password = "123456";
      Connection con = null;
      PreparedStatement pstmt = null;
      ResultSet rst = null;
      String myQuery = "select Id,Name,Age from JavaPreparedStatement";
      try {
         con = DriverManager.getConnection(JdbcURL, Username, password);
         pstmt = con.prepareStatement(myQuery);
         rst = pstmt.executeQuery();
         System.out.println("Id\t\tName\t\tAge\n");
         while(rst.next()) {
            System.out.print(rst.getInt(1));
            System.out.print("\t\t"+rst.getString(2));
            System.out.print("\t\t"+rst.getInt(3));
            System.out.println();
         }
      } catch(Exception exec) {
         exec.printStackTrace();
      }
   }
}

Here is the snapshot of Java code −

Here is the snapshot of sample output −

raja
Published on 27-Feb-2019 08:04:06
Advertisements