ojdbc - how to see table structure in JDBC? -


i'm new jdbc,i've doubt,how see table structure using jdbc program..give code plese tried showing error code 

import java.sql.*;  public class ram {     static final string jdbc_driver = "oracle.jdbc.driver.oracledriver";      static final string db_url = "jdbc:oracle:thin:@192.168.1.12:1521:aftdb";      static final string user = "system";    static final string pass = "manager";     public static void main(string[] args) {    connection conn = null;    statement stmt = null;    try{        class.forname("oracle.jdbc.driver.oracledriver");         system.out.println("connecting database...");       conn = drivermanager.getconnection(db_url,user,pass);         system.out.println("creating statement...");       stmt = conn.createstatement();       string sql;       sql = "desc emp";       resultset rs = stmt.executequery(sql);        while(rs.next()){           string emp= rs.getstring("emp");            system.out.println("id: " + emp);       }        rs.close();       stmt.close();       conn.close();    }catch(sqlexception se){        se.printstacktrace();    }catch(exception e){        e.printstacktrace();    }finally{        try{          if(stmt!=null)             stmt.close();       }catch(sqlexception se2){       }// nothing can       try{          if(conn!=null)             conn.close();       }catch(sqlexception se){          se.printstacktrace();       }    }  } }

but showing error.please 1 how table structure in jdbc program,suggest me

documentation resultsetmetadata

use resultsetmetadata

change sql query

sql = "desc emp";

as

sql = "select * emp";

for example documentation

 resultset rs = stmt.executequery("select * emp");  resultsetmetadata rsmd = rs.getmetadata();  system.out.println("no. of columns : " + rsmd.getcolumncount());  system.out.println("column name of 1st column : " + rsmd.getcolumnname(1));  system.out.println("column type of 1st column : " + rsmd.getcolumntypename(1));

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