Eclipse "cannot be resolved to a type" and new .JAR lib - config prob?

I'm trying to make use of the Commons HttpClient library in a project being built in Eclipse (3.1). I have a sample program (PostXML) that runs into "cannot be resolved to a type" on the "HttpClient" object. I think the problem is that the JRE 1.4.2 (Mac OS-X) system library includes an earlier release (3.0.1) of the HttpClient, but some of the classes used by PostXML are in the 3.1rc of HttpClient. I've downloaded the newer release, created a user library, and modified the load order so I can see the user library above (i.e. loaded prior to?) the System JRE in the package browser. I can see the HttpClient.class in the Package browser. I have "import org.apache.commons.httpclient.methods.*;" in the head of the application (that took tweaking). Several of the HttpClient methods resolve correctly, but not the HttpClient object constructor itself. I am also finding I cannot simply import all the HttpClient methods, but must import each explicitly (?). Suggestions?

I have gotten the sample code to compile and run,
though I still have some confusion about needing the
explicit imports (as compared to a wildcard import).
In the end I believe my "cannot be resolved to a
type" error was due to dependencies within the
HttpClient library on the commons-codec library. Once
I downloaded and installed that, the samples started
working better. Still trying to understand the API,
but making progress.when downloading third-party libraries, check the download page to see if it has any further dependencies. apache libraries are notoriously dependent on other apache libraries
regarding the imports, it's not that there's a need for explicit imports, it's more that wildcard imports are a bad idea. explicit imports gives other people looking at your code a first clue as to what it does, and it also can serve as an indicator that your class is too big, if there are lots of imports. wildcards hide this from you. apart from that, it makes no difference to your code, and imports don't even exist at runtime so it affects how your code actually runs, not at all

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FileDataSource cannot be resolved to a type (client application)

Hi,
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Hi,
I'm trying to send a file to a (rpc) web-service. My client java application does it with the following code.
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<%!
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The following is CheckAddress.jsp page which checks if the form has the name and phone fields filled in or not. If not then it must print the errors. But the problem I am having is that the Eclipse is showing me the error "JspWriter cannot be resolved to a type".
If I ignore this error and run the page in the j2ee preview server in eclipse than I get the following error:
>
Unable to compile class for JSP
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An error occurred at line: 22 in the jsp file: /CheckAddress.jsp
Generated servlet error:
The method prinln(String) is undefined for the type JspWriter
An error occurred at line: 22 in the jsp file: /CheckAddress.jsp
Generated servlet error:
The method prinln(String) is undefined for the type JspWriter
Caused by:
org.apache.jasper.JasperException: Unable to compile class for JSP
>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
 pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<%--Provide Directives to inform JSP of packages needed--%>
<%@page language="java" import="java.util.*"%>
<%@page language="java" import="java.io.*"%>
<%--Specify JSTL tag library for use --%>
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 void printErrors(JspWriter out, List<String> errors) throws IOException{
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 out.prinln("The following errors occured: ");
 out.prinln("<ul>");
 Iterator<String> i = errors.iterator();
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%>
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<%
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%>
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%>
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<%
%>
</body>
Edited by: blinkaj on Apr 18, 2010 2:15 AM

Thanks elOpalo, even though eclipse is still showing the error, things are running fine after I rectified my typing mistake about the prinln. :)

Can't use classes in own package ... cannot be resolved into a type

I am fairly new to java and I am having the following problem.
i have a folder structure that goes as follows:
cs/uwm/client/io
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and at the top of all three I have the following:
package cs.uwm.client.io;
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ConsoleWriter cannot be resolved into a type
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So it compiles from a commandline invocation of Java, but not from within Eclipse?
Sounds like you need to ask the question at an Eclipse site, since the problem is not a Java problem - and this forum is for Java language questions, not IDE support questions.
Probably caused by the fact that Eclipse doesn't use Sun's Java compiler.

What does "cannot be resolved to a type" mean?

This error message is generated in Eclipse and I don't know what it means. I guess it might have multiple interpretations. Could you please comment this error message ?

junit.framework.AssertionFailedError: Exception in constructor: testCreateCustomer (java.lang.Error: Unresolved compilation problems:
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 CustomerMgtSvcImpl cannot be resolved to a type
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 at com.tel.customermgt.CustomerMgtSvcImplTest.<init>(CustomerMgtSvcImplTest.java:74)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
 at java.lang.reflect.Constructor.newInstance(Unknown Source)
 at junit.framework.TestSuite.createTest(TestSuite.java:131)
 at junit.framework.TestSuite.addTestMethod(TestSuite.java:114)
 at junit.framework.TestSuite.<init>(TestSuite.java:75)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.getTest(RemoteTestRunner.java:399)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:445)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
 at junit.framework.Assert.fail(Assert.java:47)
 at junit.framework.TestSuite$1.runTest(TestSuite.java:263)
 at junit.framework.TestCase.runBare(TestCase.java:127)
 at junit.framework.TestResult$1.protect(TestResult.java:106)
 at junit.framework.TestResult.runProtected(TestResult.java:124)
 at junit.framework.TestResult.run(TestResult.java:109)
 at junit.framework.TestCase.run(TestCase.java:118)
 at junit.framework.TestSuite.runTest(TestSuite.java:208)
 at junit.framework.TestSuite.run(TestSuite.java:203)
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Override cannot be resolved to a type

Hello there,
I have installed 32-bit and 64-bit versions of the JDK
But my path is pointing at the 32-bit version.
Moreover in the eclipse IDE, I have set the JRE environment variable pointing at the 32-bit jre6.
I have also tried jre7 to no avail. Basically I am using the Eclipse IDE for a java card project.
I am using EclipseJCDE, I have installed the plugin correctly. Anything I might have overlooked
Let me know. Thanks Happy new year
bye
Jack

package timeAttend;
import javacard.framework.APDU;
import javacard.framework.Applet;
import javacard.framework.ISOException;
public class TimeAttendApplet extends Applet {
     private TimeAttendApplet() {
     public static void install(byte bArray[], short bOffset, byte bLength)
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}Override cannot be resolved to a type
Nothing more, nothing less.
Edited by: 933351 on 2012/12/27 下午 11:53

MyClass cannot be resolved to a type

am looking to call a java class from within a servlet but am having this error on compilation: "MyClass" cannot be resolved to a type.
my code look like follows showing the file path where am using eclipse :
<eclipse>/workspace/MyApp/src/pal/MyClass.java
package pal;
public class MyClass
 public MyClass()
}<eclipse>/workspace/MyApp/src/pal/MyServlet.java
package pal;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class MyServlet extends HttpServlet
 public void doGet(HttpServletRequest request, HttpServletResponse response)
 throws IOException, ServletException
 new MyClass();
}what did i miss?

Personally I dislike Netbeans, I found it to be ugly, non-intuitive and buggy. I already threw it away from my system after only 5 mins of testing. It's only good for ones who are really, really new to Java and by a coincidence got Netbeans in the JDK pack, and/or followed the Sun tutorials wherein Netbeans is pushed up, and/or still know nothing about the existence of other IDE's and what they all provides.

HashTable cannot be resolved to a Type

Hey Guys,
I want to use a HashTable to assign Integer object values to the to String keys defined by the getActionCommand() methods of an array of JButtons. Now I tried to construct a HashTable like this:
private HashTable<String, Integer> commandParser = new HashTable<String, Integer>();Eclipse gives me the error "HashTable cannot be resolved to a Type" .
I thought I had done it all as was stated in the APIs. What?s wrong here?
Sum1 hlp pls i cant figger ths oot ;-)
EDIT: While I?m here, I get a warning:
The serializable class BuildPane does not declare a static final serialVersionUID field of type long
for every one of my classes.
What is that about? I ignored it because it?s just a warning, but always safe, never sorry.
Edited by: AikmanAgain on Mar 29, 2008 5:29 AM

AikmanAgain wrote:
Hey Guys,
I want to use a HashTable to assign Integer object values to the to String keys defined by the getActionCommand() methods of an array of JButtons. Now I tried to construct a HashTable like this:
private HashTable<String, Integer> commandParser = new HashTable<String, Integer>();Eclipse gives me the error "HashTable cannot be resolved to a Type" .
I thought I had done it all as was stated in the APIs. What?s wrong here?There is no class called HashTable in the JRE. Look again ... and remember Java is case sensitive.
The serializable class BuildPane does not declare a static final serialVersionUID field of type long
for every one of my classes.
What is that about? I ignored it because it?s just a warning, but always safe, never sorry.The serialVersionUID is a field that's used in serialization (as the name and the warning should have suggested).
Google for any serialization tutorial and you'll learn what it's good for.

ServletContext cannot be resolved to a type

ServletContext cannot be resolved to a type error in Eclipse
Hi,
I keep getting the following error in my workspace:
"ServletContext cannot be resolved to a type"
The code seems to work fine in other JSP's but when I copy to some pages the error appears.
Could someone please provide some advise on why the error occurs? And maybe were to look to find a solution?
Thanks in advance.

Hey,
can you please explain me how you fixed your problem?
I have a similar problem i think> i have a tomcat 6.0.2 and im trying to run a servlet, the serlvet/api.jar is included in the build path but it doesnt work, i get the following errors
javax.servlet.ServletException: Error instantiating servlet class SimpleXSLTServlet
 org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
 org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:818)
 org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:624)
 org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
 java.lang.Thread.run(Unknown Source)
java.lang.Error: Unresolved compilation problems:
 HttpServlet cannot be resolved to a type
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 HttpServletRequest cannot be resolved to a type
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 The method getServletContext() is undefined for the type SimpleXSLTServlet
 SimpleXSLTServlet.<init>(SimpleXSLTServlet.java:23)
 sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
 java.lang.reflect.Constructor.newInstance(Unknown Source)
 java.lang.Class.newInstance0(Unknown Source)
 java.lang.Class.newInstance(Unknown Source)
 org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:212)
 org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:818)
 org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:624)
 org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
 java.lang.Thread.run(Unknown Source)
Could you please help me, I think im just not seeing the point...
Thanks a lot!!

Error "Cannot be resolved to a type" on OwnerPIN, APDU, ISO7816

The error I'm reffering to might clearify the fact that I'm new at Java/javaCard-development.
To learn how it all works I've downloaded an example and try to understand what happens.
I opened the source in Eclipse and get errors "Cannot be resolved to a type" on OwnerPIN, ADPU and ISO7816 classes. I have an Import javacard.framework statement and expected these types to be part of this library.
I guess I'm forgetting something somewhere but couldn't find the soluiton on internet.
import javacard.framework.*; // import all neccessary packages for java card*
import java.applet.;
import java.lang.Object;
public class classpgdata extends Applet {
final static byte PROP_CLASS = (byte) 0x80; // Class of the proprietary APDU commands
static {color:#ff0000}OwnerPIN{color} pin; // the PIN object
public void process({color:#ff0000}APDU{color} apdu) {
byte[] cmd_apdu = apdu.getBuffer();
if (cmd_apdu[{color:#ff0000}ISO7816{color}.OFFSET_CLA] == {color:#ff0000}ISO7816{color}.CLA_ISO7816) {
//----- it is the ISO/IEC 7816 class
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...

Hi,
What you need to do update your Java build path fr the project in your Eclipse project.
Project -> Properties then find Java Build Path.
In the Libraries tab add the {JCDK Home}/lib/javacardframework.jar by clicking the add external JARs button. You may also want to remove the standard Java Runtime (JRE) libraries as you do not build against these.
If you want to use the JC 2.2.1 CAP file converter, you may also want to ensure that the Eclipse compiler is set to compile as Java 1.3 in the Java Compiler section of the project properties.
KeesdeVink wrote:
import javacard.framework.*; // import all neccessary packages for java card
import java.applet.*;
import java.lang.Object;
It also looks like you have added two imports you don't actually want. You only need the javacard.framework.* import.
Cheers,
Shane
Edited by: safarmer on 23/09/2009 08:00

GEF4 Setup Error - FXCanvas cannot be resolved to a type

Hallo,
I tried to setup the development environment for GEF4, as specified in the GEF Contributor guide, and I found the following error:
FXCanvas cannot be resolved to a type.
(se attached file)
This error is persistent, and it seems i am not able to find a solution despite I tried multiple times to setup the environment, as specified in the GEF/GEF4 contributor guide .
This is the list of steps I followed for the setup
Check Java 8 (oracle) is installed, that is required by the e(fx)clipse plugin.
Download Eclipse IDE for Eclipse Committers. In my case: eclipse-committers-mars-R-win32.zip
Install plugins needed by GEF4, in my case:
e(fx)clipse - IDE, from http://download.eclipse.org/efxclipse/simrel-contrib/mars/m7/tools/site
e(fx)clipse - IDE - PDE, from http://download.eclipse.org/efxclipse/simrel-contrib/mars/m7/tools/site
API Tools Execution Environment Descriptions, from: http://download.eclipse.org/eclipse/updates/4.5-I-builds
Oomph Version Management, from: http://download.eclipse.org/releases/mars'
Maven Integration for Eclipse (includes Incubating components), from: http://download.eclipse.org/releases/mars
Clone the GEF4 Git repository and import the projects in the workspace
Set MARS.target: from org.eclipse.gef4.target project, double click the target definition, wait for the target is fully resolved, and click on "set as target platform".
Adjust preferences. select Menu > Window > Preferences:
Java > Compiler > Errors/Warnings: ignore the "Deprecated and restricted API"
Plug-in Development > Compilers: Ignore the "References to discouraged classes"
At the end of the setup, I can not compile the GEF4 project, because "FXCanvas cannot be resolved to a type. "
See image.
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Kind Regards.
Patrik

I updated the respective section of the contributor guide to make it even more explicit, why the "Specify Execution Environment for J2SE-1.7 (and optionally J2SE-1.8)" is important. I also saw that the guide still listed the e(fx)clipse 2.0.0 Mars M7 contribution. I updated it to refer to the e(fx)clipse 2.0.0 Mars release. You might want to update your IDE accordingly.

Cannot be resolved to a type

Hello everybody,
An error occurred while executing these codes
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String activateCode=request.getParameter("activationCode");
ActiveClass object=new ActiveClass();
String status=object.Activate(userId);
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catch(Exception e)
The error displayed was:
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22: String userId=request.getParameter("userID");
23: String activateCode=request.getParameter("activationCode");
24:
25: ActiveClass object=new ActiveClass();
26: String status=object.Activate(userId);
27:
28: if(status.equals("success"))
Can anyone help me out please?

* ActiveClass.java
* Created on August 31, 2007, 3:04 PM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package examples.simple;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import examples.sql.connect;
* @author Administrator
public class ActiveClass {
int userId;
Connection con=null;
/** Creates a new instance of ActiveClass */
public ActiveClass() {
public String Activate(String userId)
this.userId=Integer.parseInt(userId);
try
connect conn=new connect();
con=conn.createConnection();
Statement stmt=con.createStatement();
String sql="UPDATE registered_user SET user_privileges='Y' WHERE user_id = "+this.userId;
if(stmt.executeUpdate(sql)==1)
return "success";
else
return "failure";
catch (SQLException ex)
ex.printStackTrace();
return "failure";
}

Include JSP in JSP - Error: cannot be resolved to a type

Hello,
Several of my jsp pages include other jsp pages. The project has many errors: "x cannot be resolved to a type". Is there a way to resolve these errors? Below is a small example of the issue:
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<html>
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</html> JSP #2:
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<head>
<title>Name</title>
</head>
<body>
<%
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<%=speak2 %>

</body>
</html>Class:
package com.testing;
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}The error shows up in Name.jsp; the issue is with "intro". Any ideas how to resolve this issue?
Thank you in advance for your help!

The jsp page Name.jsp appears to be missing the import statement that appears in the first page.
<%@ page import="com.testing.Introduction" %>The included file is included character for character into the main page which is then treated as a single jsp page for the response. The include directive is invoked at the time of page translation. Given this, I don't see the purpose of using the <html> <head> and <title> tags in the second and included page. I don't think that this suggests the proper purpose of the include directive.
Note too that if the included file changes, all of the jsp files that call this file need to be updated as well. Servers can handle the alteration of the main jsp, but may not serve the altered content if the included file changes.
For more information see here. http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/JSPIntro8.html

Java proxy problem:com.sap.aii.proxy.xiruntime cannot be resolved to a type

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Eclipse "cannot be resolved to a type" and new .JAR lib - config prob?

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