Introduction
In
this blog we will know how to update 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 update record in a table
- import java.sql.*;
- import java.util.*;
- public class update
- {
- public static void main(String args[]) throws Exception
- {
- Scanner sc = new Scanner(System.in);
- Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
- Connection con = DriverManager.getConnection("jdbc:odbc:dsn1", "system", "pintu");
- Statement stmt = con.createStatement();
- System.out.print("Enter the Employee number: ");
- int x = sc.nextInt();
- System.out.print("Enter the new salary : ");
- int z = sc.nextInt();
- System.out.print("Enter the Employee name: ");
- String y = sc.next();
- String sql = "update employee set sal=" + z + ",empname='" + y + "' where empno=" + x;
- int no = stmt.executeUpdate(sql);
- if (no > 0)
- System.out.println(no + " Records Successfully Updated");
- else
- System.out.println("Invalid employee number");
- con.close();
- }
- }
Compile
Javac
update.java
Java
update