public Connection connecting(){
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
}catch(ClassNotFoundException e){
e.printStackTrace();
}
try{
connect=DriverManager.getConnection("jdbc:oracle:thin:SYSTEM@//localhost:1521/ORCL","SCOTT","tiger");//SYSTEM@//localhost:1521/ORCL为数据库链接地址，Scott用户名，tiger为密码//
}catch(SQLException e){
e.printStackTrace();
}
return connect;
}
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