java package error....

Replies

• 

  komputergeek

  Post your code here.
• 

  sahilgandhi87

  komputergeek

  Post your code here.

  
  Here first i am providing the whole directory structure and that is followed by coding of .java files.
  ....................................
  My directory structure is:
  
  C:
  MyProjects: (this is folder) EVERYTHING followed by ":" is folder
  beerV1:
  src:,classes: (sub-folders of berV1)
  ................................................................
  src folder contains:
  
  src:
  com:
  example:
  web:,model: (sub-folders of example)
  
  web folder contains:
  BeerSelect.java (file)
  >>>>
  model folder contains:
  BeerExpert.java (file)
  ................................................................................
  similarlly classes folder contains:
  
  classes:
  com:
  example:
  web:,mode:l
  
  web:
  (this folder does not contain file yet.BeerSelect.class file goes here after successful compilation)
  
  model:
  BeerExpert.class
  ...............................................................................
  
  now when i compile BeerSelect.java like:
  
  C:\MyProjects\beerV1>javac -classpath C:/tomcat/common/lib/servlet-api.jar -d classes src/com/example/web/BeerSelect.java
  
  Three ERRORs:
  
  
  src/com/example/web/BeerSelect.java:3: package com.example.model does not exist
  import com.example.model.*;
  ^
  src/com/example/web/BeerSelect.java:17: cannot find symbol
  symbol : class BeerExpert
  location: class com.example.web.BeerSelect
  BeerExpert be = new BeerExpert();
  ^
  src/com/example/web/BeerSelect.java:17: cannot find symbol
  symbol : class BeerExpert
  location: class com.example.web.BeerSelect
  BeerExpert be = new BeerExpert();
  ^
  3 errors
  
  .............................................................................
  BeerExpert.java has code:
  
  package com.example.model;
  
  import java.util.*;
  
  public class BeerExpert
  {
  public List getBrands(String c)
  {
  List arr = new ArrayList();
  if(c.equals("amber"))
  {
  arr.add("Jack Amber");
  arr.add("Red Moose");
  }
  else
  {
  arr.add("Jail Pale Ale");
  arr.add("Gout Strout");
  }
  return(arr);
  }
  }
  .............................................................................
  BeerSelect.java has code:
  
  package com.example.web;
  
  import com.example.model.*;
  
  import javax.servlet.*;
  import javax.servlet.http.*;
  import java.io.*;
  import java.util.*;
  
  public class BeerSelect extends HttpServlet
  {
  public void doPost(HttpServletResponse response,
  HttpServletRequest request)
  throws IOException,ServletException
  {
  String c = request.getParameter("color");
  BeerExpert be = new BeerExpert();
  List a = be.getBrands(c);
  
  response.setContentType("text/html");
  PrintWriter out = response.getWriter();
  out.println("Selection Beer Advice
  ");
  
  Iterator i = a.iterator();
  while(i.hasNext())
  {
  out.println("
  try: "+ i.next());
  }
  }
  ..............................................................
  
  
  MAIN PROBLEM LIES WITH IMPORTING OF PACKAGE IN BeerSelect.java
  and ERROR is Package not exist but it exist...
• 

  arunhero99

  Beer example eh? Surely Head First series 😛
  I have seen this error in java forums.
  
  the example is linux format. Use windows format:
  
  javac -classpath C:\tomcat\common\lib\servlet-api.jar;
  
  Try adding semicolons to separate classpaths...