A.FlowLayout B.GridLayout C.BorderLayout D.CardLayout E.BridbagLayout
在J2EE中,有如下代碼在Servlet1.Java中 Import javax.servlet.*; Import javax.servlet.http.* Import java.io.IOException; Import java.io.PrintWriter; Public class Servlet1 extends HttpServlet{ Public void init () throw ServletException {} Public void service(HttpServletRequest request, HttpServletResponce response) throws ServletException,IOException{ PrintWriter out=response.getWriter(); Out.println(“hello!”); } } 假如編譯Servlet要具備的環(huán)境都已經(jīng)建立好?,F(xiàn)在用完全正確的命令編譯該文件,對(duì)于以下成熟正確的是()
A.編譯該晚間時(shí)會(huì)提示缺少doGe()t或者doPost(),編譯不能夠成功通過 B.編譯后,把Serlvet.cass放在正確的位置,在瀏覽器中查看該Servlet1,會(huì)看到輸出文在:“hello!” C.編譯后,把Servlet.class放在正確的位置,在瀏覽器中查看該Servlet1,卻看不到任何輸出的文字 D.編譯后,把Servlet.class放在正確的位置,在瀏覽器中查看該Servlet1,卻看到產(chǎn)生運(yùn)行時(shí)錯(cuò)誤的出錯(cuò)信息
編譯如下的Java程序片段: Class test{ Int count=9; Public void a(){ Int count=10; System.out,println(“count 1=” + count); } Public void count(){ System.out.println(“count 2 =”+ count); } Public static void main(String args[] ){ Test t=new Test(); t.a(); t.count(); } } 結(jié)果是()
A.不能通過編譯 B.輸出:count 1 =10 count 2=9 C.輸出:count 1=9 count 2=9