Update records from database using JDBC

Posted by Satyapriyanayak under Others category on | Points: 40 | Views : 516
In this Code Snippets we will know how to update 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 update record in a table

/*To update record in a table by using Statement*/
import java.sql.*;
import java.util.*;
public class update
public static void main(String args[]) throws Exception
Scanner sc=new Scanner(System.in);
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);
System.out.println(no+" Records Successfully Updated");
System.out.println("Invalid employee number");

Javac update.java
Java update

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