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();
}
}
}