Introduction

In this blog we will know how to delete records from database using JDBC (Java Database Connectivity) in the console window.
Here we use Type-1 driver (JDBC-ODBC bridge)

Creation of dsn(database source name) for Oracle

Start-Control panel- Administrative Tools- Data Sources (ODBC)-go to system DSN tab-click add button-select a driver for which you want to set up a data source (for Oracle- Oracle in XE)-select it and click finish-give any name in the data source name textbox-then click ok button.
Note: - Here Username=system, Password=pintu and DSN name=dsn1

Table Creation

Create table employee (empno int,empname varchar(50),sal int)
Example:- To delete record from a table
  1. /*To delete record from a table by using Statement*/
  2. import java.sql.*;
  3. import java.util.*;
  4. public class delete {
  5. public static void main(String args[]) throws Exception {
  6. Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
  7. Scanner sc = new Scanner(System.in);
  8. Connection con = DriverManager.getConnection("jdbc:odbc:dsn1", "system", "pintu");
  9. Statement stmt = con.createStatement();
  10. System.out.print("Enter lower limit salary: ");
  11. int lb = sc.nextInt();
  12. System.out.print("Enter upper limit salary: ");
  13. int ub = sc.nextInt();
  14. String sql = "delete from employee where sal between " + lb + " and " + ub;
  15. int no = stmt.executeUpdate(sql);
  16. System.out.println(no + " Records Successfully Deleted...");
  17. con.close();
  18. }
  19. }
Compile
Javac delete.java
Java delete