Source Code : Demo PreparedStatement Set Reference

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Demo PreparedStatement Set Reference

 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class DemoPreparedStatementSetRef {
  public static Connection getConnection() throws Exception {
    String driver = "org.gjt.mm.mysql.Driver";
    String url = "jdbc:mysql://localhost/databaseName";
    String username = "root";
    String password = "root";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
    return conn;
  }

  public static void main(String[] args) throws Exception {
    String deptName = "oldName";
    String newDeptName = "newName";

    ResultSet rs = null;
    Connection conn = null;
    PreparedStatement pstmt = null;
    PreparedStatement pstmt2 = null;
    try {
      conn = getConnection();
      // prepare query for getting a REF object and PrepareStatement object
      String refQuery = "select manager from dept_table where dept_name=?";
      pstmt = conn.prepareStatement(refQuery);
      pstmt.setString(1, deptName);
      rs = pstmt.executeQuery();
      java.sql.Ref ref = null;
      if (rs.next()) {
        ref = rs.getRef(1);
      }
      if (ref == null) {
        System.out.println("error: could not get a reference for manager.");
        System.exit(1);
      }
      String query = "INSERT INTO dept_table(dept_name, manager)values(?, ?)";
      pstmt2 = conn.prepareStatement(query);
      pstmt2.setString(1, newDeptName);
      pstmt2.setRef(2, ref);
      // execute query, and return number of rows created
      int rowCount = pstmt2.executeUpdate();
      System.out.println("rowCount=" + rowCount);
    } finally {
      pstmt.close();
      pstmt2.close();
      conn.close();
    }
  }
}

           
         
  

Thank with us