Wednesday 11 December 2013

jdbc program for using ResultSetMetaData

import java.sql.*;
import java.util.*;

public class ResultSetMDEx {

public static void main(String s[]) throws Exception {
Class.forName("com.mysql.jdbc.Driver");


Properties p= new Properties();
p.put("user", "root");
p.put("password", "admin");
//DriverManager.getConnection(url,userName,password);
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/test",p);

Statement st = con.createStatement();//it creates a object and returns Statement obj

ResultSet rs=st.executeQuery("select * from "+s[0]);
//Table name is taken as an command line arg

ResultSetMetaData rsmd=rs.getMetaData();

System.out.println("Table Name : "+s[0]);

int colcount=rsmd.getColumnCount();

for (int i=1;i<=colcount;i++) {
System.out.print(rsmd.getColumnName(i)+"\t");
System.out.println(rsmd.getColumnTypeName(i));
}//for

con.close();
}//main
}//class
/*


D:\>cd jdbc

D:\jdbc>cd prog

D:\jdbc\prog>cd monday

D:\jdbc\prog\monday>javac ResultSetMDEx.java

D:\jdbc\prog\monday>set classpath=D:\softwares\MySQL\new\mysql-connector-java-5.
1.18-bin.jar;.;

D:\jdbc\prog\monday>java ResultSetMDEx emp;
Table Name : emp;
empno   INT
ename   VARCHAR
sal     DOUBLE
hiredate        DATE

D:\jdbc\prog\monday>
*/

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