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Delete records from database using JDBC

By Satyapriya Nayak Blogs | Java Sep 24, 2011
In this blog we will know how to delete records from database using JDBC (Java Database Connectivity) in console window.
Download Files: Delete.rar

In this blog we will know how to delete records from database using JDBC (Java Database Connectivity) in 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 data source (for Oracle- Oracle in XE)-select it and click finish-give any name in 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

 

/*To delete record from a table by using Statement*/

import java.sql.*;

import java.util.*;

public class delete

{

public static void main(String args[]) throws Exception

{

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Scanner sc=new Scanner(System.in);

Connection con=DriverManager.getConnection("jdbc:odbc:dsn1","system","pintu");

Statement stmt=con.createStatement();

System.out.print("Enter lower limit salary: ");

int lb=sc.nextInt();

System.out.print("Enter upper limit salary: ");

int ub=sc.nextInt();

String sql="delete from employee where sal between "+lb+" and "+ub;

int no=stmt.executeUpdate(sql);

System.out.println(no +" Records Successfully Deleted...");

con.close();

}

}

Compile

Javac delete.java

Java delete

 

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