javac - javac编译错误

Question

尝试创建一个导入另一个测试包的测试应用。

列出了测试应用程序，以及编译cmd和err。

这些文件都在同一目录中。我能够在没有警告/错误的情况下编译MyIncorrectnessListener.java和MycssErrorHandler.java。

我试图找出导致错误的原因>>> sjsu_classes.java:33:'。预期<<<<<

任何指针/评论表示赞赏...

谢谢

编译cmd/err

[root@toshiba parseapp2]# javac -Xlint -classpath '/opt/htmlunit/lib/
*:/parseapp2/' sjsu_classes.java sjsu_classes.java:33: '.' expected
import MyIncorrectnessListener;
                             ^
sjsu_classes.java:33: ';' expected 
import MyIncorrectnessListener;
                              ^
sjsu_classes.java:34: class, interface, or enum expected 
import MycssErrorHandler;
      ^

3 errors
3 warnings



/*
//      sjsu_classes.java
//
//      function handles getting the data from the sjsu course page, and returns the course page/list
//      for the given Alphabet letter. - handles ane letter at a time..
//      -the page is then returned to the calling routinne
//
//              input:
//                      args[0] - start url
//                      args[1] - term
//                      args[2] - dept
//
//              return:
//                      course page for the term/dept
//
*/
import java.io.IOException;
import java.net.URL;
import java.util.List;
import java.util.Set;

import org.apache.commons.httpclient.NameValuePair;

import com.gargoylesoftware.htmlunit.*;
import com.gargoylesoftware.htmlunit.html.*;
import org.w3c.css.sac.ErrorHandler;
import org.xml.sax.SAXParseException;

//==my test packages
import MyIncorrectnessListener;
import MycssErrorHandler;

public class sjsu_classes {

   //public static void main(String[] args) throws Exception {
   public void main(String[] args) throws Exception {

           // Create and initialize WebClient object
      WebClient webClient = new WebClient(BrowserVersion.FIREFOX_3);

           IncorrectnessListener ilisten = new MyIncorrectnessListener();
           ErrorHandler ierr = new MycssErrorHandler();
           webClient.setIncorrectnessListener(ilisten);
           webClient.setCssErrorHandler(ierr);
      webClient.setThrowExceptionOnScriptError(false);
      webClient.setRefreshHandler(new RefreshHandler() {
        public void handleRefresh(Page page, URL url, int arg) throws IOException {
                           //System.out.println("handleRefresh");
                   }

           });

           // visit the page, get the form, get the btn
           String url_tmp;
           String url;
           String Term;
           String Dept;
           String tmp1;
           String tmp2;

           url_tmp="?FolderPath=PORTAL_ROOT_OBJECT.PA_HC_CLASS_SEARCH&PortalActualURL=https%3a%2f%2fcmshr.sjsu.edu%2fpsc%2fHSJPRDF%2fEMPLOYEE%2fHSJPRD%2fc%2fCOMMUNITY_ACCESS.CLASS_SEARCH.GBL&PortalRegistryName=EMPLOYEE&PortalServletURI=https%3a%2f%2fcmshr.sjsu.edu%2fpsp%2fHSJPRDF%2f&PortalURI=https%3a%2f%2fcmshr.sjsu.edu%2fpsc%2fHSJPRDF%2f&PortalHostNode=HRMS&NoCrumbs=yes";

           System.exit(0);
   }

}

=======================

MyIncorrectnessListener test package
--------------------------------------------
/*
//      MyIncorrectnessListener.java
//
//      function handles getting the data from the sjsu course page, and returns the course page/list
//      for the given Alphabet letter. - handles ane letter at a time..
//      -the page is then returned to the calling routinne
//
//              input:
//                      args[0] - start url
//                      args[1] - term
//                      args[2] - dept
//
//              return:
//                      course page for the term/dept
//
*/
//==handle the warnings thrown from the js functions..

package MyIncorrectnessListener;

import com.gargoylesoftware.htmlunit.*;
import com.gargoylesoftware.htmlunit.html.*;

//public static class MyIncorrectnessListener implements IncorrectnessListener
public class MyIncorrectnessListener implements IncorrectnessListener
{
  @Override
 public void notify(String arg0, Object arg1)
 {
   //System.err.println("Argument : " + arg0.toString() + ", Object :");
 }
}

MycssErrorHandler test package
--------------------------------
/*
//      MycssErrorHandler.java
//
//      function handles getting the data from the sjsu course page, and returns the course page/list
//      for the given Alphabet letter. - handles ane letter at a time..
//      -the page is then returned to the calling routinne
//
//              input:
//                      args[0] - start url
//                      args[1] - term
//                      args[2] - dept
//
//              return:
//                      course page for the term/dept
//
*/
package MycssErrorHandler;

import org.w3c.css.sac.ErrorHandler;
import org.xml.sax.SAXParseException;
import com.gargoylesoftware.htmlunit.*;
import com.gargoylesoftware.htmlunit.html.*;

//==handle the warnings thrown from the js functions..
       //==handle the warnings thrown from the css functions..
//      public static class MycssErrorHandler implements DefaultCssErrorHandler
//      public static class MycssErrorHandler implements ErrorHandler
//      public class MycssErrorHandler implements ErrorHandler
       public abstract class MycssErrorHandler implements ErrorHandler
//      protected class MycssErrorHandler implements ErrorHandler
       {
         //@Override
         public void notify(String arg0, Object arg1)
         {
           //System.err.println("Argument : " + arg0.toString() + ",Object : ");
         }
         //@Override
               public void fatalError(SAXParseException ex)
               {
                       //fatals.add(ex);
               }
       }

Answer 1

您的Java文件必须位于与其包名称匹配的目录中，因此您必须放置
MyIncorrectnessListener.java位于名为MyIncorrectnessListener的目录中，MycssErrorHandler.java位于名为MycssErrorHandler的目录中，依此类推。

您可以将它们全部放在同一目录中，但是必须删除文件中的“package”语句。

您收到的错误是因为您只在import语句中给出了包名。您应该从包中导入特定的内容或所有内容。更改为

import MyIncorrectnessListener.MyIncorrectnessListener;

要么

import MyIncorrectnessListener.*;

或者，如果您不将文件放在任何包中，则不需要任何导入语句。