Java连接数据库第一版

package OneConnection;

import java.beans.Statement;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;

public class Connection {
	private static Connection ConnectionCall=null;
	private Connection(){
		
	}
	public static Connection Call(){
		if (ConnectionCall==null) {
			ConnectionCall=new Connection();
		}
		return ConnectionCall;
	}
	public void Add() {
		try {
			Class.forName("oracle.jdbc.driver.OracleDriver");
			java.sql.Connection conn = DriverManager.getConnection(
					"jdbc:oracle:thin:@127.0.0.1:1521:shuai", "sys as sysdba",
					"0");
			String sql = "insert into Employee values(1,1,1,1,'1',sysdate,sysdate,1,1,1,1,1)";
			java.sql.Statement statement = conn.createStatement();
			int values = statement.executeUpdate(sql);
			System.out.println(values);
			statement.close();
			conn.close();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public void Select() {
		try {
			Class.forName("oracle.jdbc.driver.OracleDriver");
			java.sql.Connection conn = DriverManager.getConnection(
					"jdbc:oracle:thin:@127.0.0.1:1521:shuai", "sys as sysdba",
					"0");
			String sqlselect = "select * from Employee";
			java.sql.Statement statment = conn.createStatement();
			ResultSet resultset = statment.executeQuery(sqlselect);
			while (resultset.next()) {
				int id = resultset.getInt("emo_id");
				String number = resultset.getString("emp_code");
				String name = resultset.getString("emp_name");
				String possword = resultset.getString("emp_pwd");
				String sex = resultset.getString("emp_sex");
				Date joind = resultset.getDate("emo_joind");
				Date birth =resultset.getDate("emp_birth");
				String address=resultset.getString("emp_address");
				String email=resultset.getString("emp_emall");
				String pohne=resultset.getString("emp_pohne");
				long description=resultset.getLong("emp_descripton");
				String dept_id=resultset.getString("dept_id");
				System.out.println(id + number + name + possword + sex + joind+birth+address+email+pohne+description+dept_id);
			}
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}