Oracle四種登入方式

1.SQL plus

2.SQL Developer

3.PLSQL Developer

前面三種沒有什麼可以說的，基本上就是安裝軟體就可以使用

4.JDBC 連線

public static void main(String[] args) {
        Connection conn = null;
        Statement stat = null;
        try{
            Class.forName("oracle.jdbc.OracleDriver");

            String url="jdbc:oracle:thin:@localhost:1521:orcl"
 
;
            String user="scott";
            String password="tiger";

            conn = DriverManager.getConnection(url,user,password);

            stat = conn.createStatement();
            ResultSet rs = stat.executeQuery("select * from emp");

            if(rs != null){
                while
 
(rs.next()){
                    System.out.println("員工號："+rs.getInt("empno")+"姓名："+rs.getString("ename"));
                }
            }
            rs.close();

        }catch(Exception e){
            e.printStackTrace();
        }finally{
            if(stat != null){
                try {
                    stat.close();
                } catch
 
 (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            if(conn!=null){
                try {
                    conn.close();
                } catch (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
}