I am working on a project in Eclipse. Usually, whenever there are compilation errors in a particular file, the file name in the Package Explorer view is shown with a red box and a cross. This helps to find files with compilation errors easily.However, in one particular project, I have some files with compilation problems, but those are not shown with red in the package explorer. Only when I open the files in eclipse, do I see the compilation errors. Also, this behavior is happening only in one project. Other projects are showing compilation errors properly in the package view. Any idea why this is happening ?
Is there an error red cross on the project?
Check the Problems view. (Window -> Show View -> Problems)
It could be that there is a build path error, or another error at the project level.
Often I've found that "cleaning" the project helps show those errors in the package explorer. Go to Project -> Clean... and select the projects you want to recompile.
Also it might even be easier to use the error view to jump directly to the source of your error without the lengthy way using the package explorer.
Related
Am having problems with development in android as all my lines of code in all the files in the src folder where am placing my java files have errors on them. I do not know where the problem is coming from!
First had problems where 'R' was underlined in red. then after Ctrl+Shift+O, I exited my eclipse and on opening it, that's what I saw on my java files
Go to
Project Properties>Java Build Path>Libraries tab
and make sure JRE is added, if not, click "Add Library..." and add it.
All errors seems related to Android's specific classes:
you may have a problem with you Eclipse+ADT installation
you may have pasted the code into the wrong type of project
you may simple missing the corrisponding import
Last is simplier to verify, just hover with mouse over the error and see if Eclipse suggests you to add a specific import
My Eclipse stoped showing errors in project explorer window. Currently in I ask Eclipse run class I got message:
Error in Workspace
Errors exist in required project(s)
Prog
Proceed with lounch?
And I have no possibility to check where are these errors are. How to fix this problem?
Open the Problems view. It will display all the compile time errors & warning in your open Applications. To open that view follow the steps:
Go to Window: Show View: Other: General: Problems.
Also to view the errors in Project Explorer, try cleaning the project, as suggested by Vimal Bera.
I try to make changes in java code but Eclipse not see it. For example i says:
System.out.println("WKT");
And exspect to see:
WKT
But not see it.
10 minutes ago all works fine. Now i see strange project icon in project manager:
Whats can be wrong?
The project is not getting compiled. I can see some errors in the projects. Some dependent project might be throwing error due to which it is not getting compiled.
Try fixing those errors, clean your project and then you should be able to see the desired output
Your code may not have any error but the project is compiled as a whole.
In case, it is not successfully compiled, the output will be of an old class version i.e. you cannot see any changes you make in the code.
Try
Eclipse : Window -> Show View -> Problems. You will see all the problems in a window and you can fix them one by one
Try
Project - Clean
and the select projects to rebuild
I am writing the code in eclipse. In my project explorer there is an error(red x mark) displayed on my project name. But there are no errors in the other sub folders.Can any one say where can i find those errors.? What is to be done to find the problem. Thanks in advance
The errors from Eclipse are usually avaiable from Error Log View
Window -> Show View -> Erro Log View
Also you can try to clean and rebuild the project.
One possible cause for such thing is build path issues. Go to your project build path and look at the list of included jars: check if you have any jar marked with the same red x. Also, check the eclipse "Problems" tab.
Go to the 'Problems' tab (hit Ctrl-3, then start typing Problems). It will give a description of what's wrong.
I've created a Java project from existing source with an Ant build script in Eclipse. I cannot run my project because Eclipse tells me that there is at least one error in it.
Now, I know that the project runs fine on the command line, so I suspect an Eclipse configuration error.
As far as I can tell, the only feedback that I have from Eclipse is
a little red X on my project in the Package Explorer window
(source: gregmattes.com)
and dialog window when I try to run the project says there are errors in the project
(source: gregmattes.com)
This is all wonderful, but what is the error?
Is there a "show me the next error" button somewhere?
In the past, on other Eclipse projects, I've notice other little red X's on folders containing source files with errors, the little red X's appear on the source files as well. I scanned (manually) through all of the source files and I haven't found any other red X's (again, where is the "next error" button?).
If I select the "Proceed" button I am greeted with a java.lang.NoClassDefFoundError for my main class, which makes me suspect a classpath issue. I've checked the classpath, and I'm fairly certain that it's correct. Is there a way to see the exact jvm command line that Eclipse is invoking? I realize that it might be invoking the JVM programmatically, and not on a "real" command line. In any case, is there a way, other than the run configuration dialog, to see what is actually happening when I hit the "Proceed" button?
The errors are shown in the Problems view. If it is not opened, go to:
Window > Show View > Problems
Also accessible with the keyboard shortcut Alt+Shift+Q,X
Selecing Window -> Show View -> Problems will open the Problems view, that should have a list of all problems, their location and nature (it can be configured to show only project- or file-local problems, so you may also have to click on the project). Most likely you have a config error in your project, e.g. a reference to a JAR library that cannot be found.
View Errors/Warnings Project based
if you get that kind of an error which shows a red cross on the project folder just refresh that project right clicking on it i was having the same problem as above so try and see...