jdbc连接oracle示例库

package jdbc.test;
import java.sql.*;

public class PreparedStatement {
	public static void main(String[] args){
		String dbDriver = "oracle.jdbc.driver.OracleDriver";
		String dbUrl = "jdbc:oracle:thin:@localhost:1521:orcl";
		String dbUser = "scott";
		String dbPwd = "tiger";
		
		try{
			String sql = "select * from emp";
			//explicitly load the driver before get a DB connection
			Class.forName(dbDriver).newInstance();
			//connection to db
			Connection conn = DriverManager.getConnection(dbUrl,dbUser,dbPwd);
			//create a statment object
			Statement stmt = conn.createStatement();
			//get a ResultSet object
			ResultSet rs = stmt.executeQuery(sql);
			while(rs.next()){
				System.out.println(rs.getString(1)
						+ "\t" + rs.getString(2)
						+ "\t" + rs.getString(3)
						+ "\t" + rs.getString(4)
						+ "\t" + rs.getString(5)
						+ "\t" + rs.getString(6)
						+ "\t" + rs.getString(7)
						+ "\t" + rs.getString(8)
						);
			}
			 
		}catch(Exception e){
			e.printStackTrace();
		}
	}
}