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Java Inspector ignores static imports [message #839915]

Mon, 09 April 2012 08:07

Eclipse User

Hi,

I have a problem with debugging Java code with Eclipse Indigo 3.7 SR2. For demonstration purposes consider the following simple program:

package eu.guckenbiehl.test;

import eu.guckenbiehl.utils.MyConstants;

public class MyTest {
  public static void main(String[] args) {
      System.out.println(MyConstants.SOME_CONSTANT); // <-- Breakpoint here
      System.out.println("Done.");
  }
}

If I debug this program, I can stop at a breakpoint on the first line of main(). But if I then mark "MyConstants.SOME_CONSTANT" and try to evaluate it using the "Display" command in the context menu, I get the error "MyConstants cannot be resolved to a variable". The same happens if I use the Inspect command from the context menu.

However, if I go on with debugging and step over that line, the value of MyConstants.SOME_CONSTANT is printed to the console without any errors. Hence, the classpath of the debugger seems to be alright. Also, if I explicitly specify the package of MyConstants writing

System.out.println(eu.guckenbiehl.utils.MyConstants.SOME_CONSTANT);

the Display and Inspect commands work fine.

This happens whenever I try to apply Display and Inspect to expressions that refer to static variables or functions. If the expression refers only to variables or functions of instances, then Display and Inspect work as I expect. I also seem to remember, that in Eclipse 3.4 it was possible to display/inspect static expressions.

So, what am I missing? Do I have to set some particular option?

Thanks for any help,
Thomas

Re: Java Inspector ignores static imports [message #840024 is a reply to message #839915]

Mon, 09 April 2012 11:20

Eclipse User

Have you tried just selecting SOME_CONSTANT and performing the Display on that? I'm not sure if this works, but the actual variable name is SOME_CONSTANT.

Re: Java Inspector ignores static imports [message #840025 is a reply to message #839915]

Mon, 09 April 2012 11:22

Eclipse User

This should be working just fine. I ran your test code in:

Version: 4.2.0
Build id: I20120321-0610

and it worked just fine (no errors / exceptions).

In your test is the eu.guckenbiehl.utils package in the same project as your test class?

Re: Java Inspector ignores static imports [message #840130 is a reply to message #839915]

Mon, 09 April 2012 13:56

Eclipse User

@Michael: The problems occur with

Version: Indigo Service Release 2
Build id: 20120216-1857
JVM: Java HotSpot(TM) Client VM (20.6-b01, mixed mode)
Java: version 1.6.0_31, vendor Sun Microsystems Inc.

They also occured with
Version: Indigo Service Release 1
Build id: 20110916-0149.

The configuration is in the file "eclipse-configuration.txt" attached to this message.
I have a clean workspace with just that project. The project is also attached to this message.

I start the application by selecting "Debug as > Java Application" in the context menu of the editor (if this makes any difference).

@David: I tried to select and inspect just "SOME_CONSTANT", but it says "SOME_CONSTANT cannot resoved to a variable" (which is what I would expect, since it belongs to a different class).

Greetings and Thanks,
Thomas

Attachment: eclipse-configuration.txt
(Size: 485.35KB, Downloaded 914 times)
Attachment: 0000.Test.zip
(Size: 5.06KB, Downloaded 335 times)

Re: Java Inspector ignores static imports [message #841416 is a reply to message #840130]

Wed, 11 April 2012 05:18

Eclipse User

Hi, does anyone know of a code inspector like SAP has for webdynpro abap but than for the java version?

61designstreet.com

Re: Java Inspector ignores static imports [message #916103 is a reply to message #841416]

Tue, 18 September 2012 10:33

Eclipse User

Hi, I have the same problem after upgrading to version 3.7

Until I have had 3.4, everything works fine.

Found anybody solution how to fix this problem?

Re: Java Inspector ignores static imports [message #996291 is a reply to message #839915]

Tue, 01 January 2013 12:42

Eclipse User

This error also happens with Juno Service Release 1
Build id: 20121004-1855
Java HotSpot(TM) Client VM 1.7.0_10
Java(TM) SE Runtime Environment (build 1.7.0_10-b18)

I was finally able to simplify the example program:

package test;

import java.util.Date;
//
public class MyTest {
  public static void main(String[] args) {
      System.out.println(new Date()); // <-- Breakpoint here
  }
}

Please note the (for demonstration purposes: empty) comment in line 4 !

Now I put a breakpoint in line 7 and start the debugger. When it breaks in main(), I mark "new Date()" and try to evaluate it using the "Display" command in the context menu. This results in the error "Date cannot be resolved to a type". The same happens if I use the Inspect command from the context menu.

The same error occurs, if I put the comment slashes in line 9 after the closing bracket.

However the error does NOT occur, if I

remove the comment in line 4
move the comment to line 10
move the comment inside the class body

Any ideas?

Best regards,
Thomas

Re: Java Inspector ignores static imports [message #997415 is a reply to message #839915]

Mon, 07 January 2013 06:21

Eclipse User

I tried your code in my editor and working quite fine. I think that there's noting wrong with your code.

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