class DBget{
Sting sConnStr;
javax.servlet.jsp.JspWriter out;
DBget(String url,javax.servlet.jsp.jspWriter _out){
try{
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
sConnStr=new String(url);
out=_out;
}
catch(Exception e){
}
}


<% DBget myget=new DBget("jdbc:JSQLConnect://127.0.0.1/mydb",out);
myget.get();
%>


我想问：
javax.servlet.jsp.JspWriter out;
DBget(String url,javax.servlet.jsp.jspWriter _out)
DBget myget=new DBget("jdbc:JSQLConnect://127.0.0.1/mydb",out);
分别是什么意思！