When i try to run my code on Eclipse this error appears:
Usage: javaw [-options] class [args...]
(to execute a class)
or javaw [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-d32 use a 32-bit data model if available
-d64 use a 64-bit data model if available
-server to select the "server" VM
-hotspot is a synonym for the "server" VM [deprecated]
The default VM is server.
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose:[class|gc|jni]
enable verbose output
-version print product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -no-jre-restrict-search
include/exclude user private JREs in the version search
-? -help print this help message
-X print help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions with specified granularity
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions with specified granularity
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
-splash:<imagepath>
show splash screen with specified image
See http://www.oracle.com/technetwork/java/javase/documentation/index.html for more details.
i try to coment my entired code and this error still appear.
It seems you haven't set your java path correctly.
Setting Up Eclipse with Java 1.6 on Windows
How To Install and Get Started with Java Programming
Run eclipse in clean mode
Edit the eclipse.ini file located in your Eclipse install directory and insert -clean as the first line.
If this is happening to a specific project only and other projects are running fine then your default run configuration might have changed. You may try the following
- Run -> Run As -> 1 Java Application.
I fixed this issue by deleting some of my old runtime configurations. Eclipse then started automatically generating them again.
Related
I need to permanently turn on the -verbose setting for SBT, without having to type it each time. What's the best way to do this? Putting -verbose in $SBT_OPTS does not have an effect.
-verbose flag can be enabled system-wide by saving it in global sbtopts configuration file. For example, on my machine, it is located at
/usr/local/etc/sbtopts
Here is an example of its contents
# set memory options
-mem 2048
# java version (default: java from PATH, currently $(java -version |& grep version))
-java-home /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home
-verbose
Addressing the comment regarding IntelliJ, note that IntelliJ Scala Plugin currently does not read global sbtopts, however it does have support for local .sbtopts configuration file, but it does not support every option provided by sbt launcher script proper:
Supported options:
-no-share, -no-global, -sbt-boot, -sbt-dir, -ivy, -jvm-debug,
all options with -D and -J prefixes
Unsupported options:
-S prefix seems to be unsupported by sbt-launcher itself
-mem has a bit untrivial algorithm, same thing can be achieved
by configuring -Xmx, -Xms, -XX:ReservedCodeCacheSize options
-sbt-version, -sbt-rc, -sbt-snapshot, -sbt-jar
and -java-home are overriden by IDEA options
Other options have no impact on project importing process
SbtOpts.scala should list all the supported options. One notable absence is support for -mem, which means if we put, say, -mem 4096 in .sbtopts, then IntelliJ will simply ignore it. Similarly, the flag -verbose will not be picked up by IntelliJ sbt runner.
Hence the key is to understand that sbt runner script proper is not the same as IntelliJ custom made sbt runner component.
if you use unix friendly environment, you can create an alias for sbt in your ~/.bash/profile for example
alias sbt=sbt -verbose
Most of my team uses a .bat file to set paths and then run a build. The .bat file allows selection of multiple different compiler/target platforms, but all use some version of GCC/G++ or similar compiler.
I created an Eclipse project that simply uses the .bat file rather than re-inventing the wheel and tracking down all the paths needed for each build (which I'd need to update if anyone ever updated the .bat file anyway).
This works great for building, and I can even see compiler errors/warnings, but there are some extra errors always present:
Program "gcc" not found in PATH
Program "g++" not found in PATH
I've seen many questions about these and similar errors, but in those case the user couldn't build, and the solution was to install the tools and/or update their PATH or Eclipse environment settings. I don't want to do that; all the tools I need are installed, and the .bat file works just fine to set the PATH for building. Is there a way to suppress these errors, or have Eclipse not try to find the compiler executable, since the build succeeds anyway?
Edit: As suggested in the answer I've received so far, here is output on the console after putting a full path to a compiler in the global discovery settings, which isn't exactly my favorite solution even if it worked, but I'll probably deal with it. Regardless the errors don't go away:
15:27:24 **** Running scanner discovery: CDT GCC Built-in Compiler Settings MinGW ****
"C:\\redacted\\localapps\\MinGW5\\bin\\g++.exe" -E -P -v -dD C:/Project_Files/redacted/code_workspaces/redacted/.metadata/.plugins/org.eclipse.cdt.managedbuilder.core/spec.C
Reading specs from C:/redacted/localapps/MinGW5/bin/../lib/gcc/mingw32/3.4.2/specs
Configured with: ../gcc/configure --with-gcc --with-gnu-ld --with-gnu-as --host=mingw32 --target=mingw32 --prefix=/mingw --enable-threads --disable-nls --enable-languages=c,c++,f77,ada,objc,java --disable-win32-registry --disable-shared --enable-sjlj-exceptions --enable-libgcj --disable-java-awt --without-x --enable-java-gc=boehm --disable-libgcj-debug --enable-interpreter --enable-hash-synchronization --enable-libstdcxx-debug
Thread model: win32
gcc version 3.4.2 (mingw-special)
C:/redacted/localapps/MinGW5/bin/../libexec/gcc/mingw32/3.4.2/cc1plus.exe -E -quiet -v -P -iprefix C:\redacted\localapps\MinGW5\bin\../lib/gcc/mingw32/3.4.2/ C:/Project_Files/redacted/code_workspaces/redacted/.metadata/.plugins/org.eclipse.cdt.managedbuilder.core/spec.C -dD
ignoring nonexistent directory "C:/redacted/localapps/MinGW5/bin/../lib/gcc/mingw32/3.4.2/../../../../mingw32/include"
#define __cplusplus 1
ignoring nonexistent directory "/mingw/lib/gcc/mingw32/../../../include/c++/3.4.2"
#define __STDC_HOSTED__ 1
ignoring nonexistent directory "/mingw/lib/gcc/mingw32/../../../include/c++/3.4.2/mingw32"
#define __GNUC__ 3
ignoring nonexistent directory "/mingw/lib/gcc/mingw32/../../../include/c++/3.4.2/backward"
...
And then a bunch of #defines
The command string I used in the discovery options for this output was C:\redacted\localapps\MinGW5\bin\${COMMAND}.exe ${FLAGS} -E -P -v -dD "${INPUTS}".
Based on the information provided, these errors are coming from the scanner discovery part of CDT.
On my machine the full error looks like this:
Description Location Type
Program "g++" not found in PATH Preferences, C++/Build/Settings/Discovery, [CDT GCC Built-in Compiler Settings MinGW] options C/C++ Scanner Discovery Problem
Program "gcc" not found in PATH Preferences, C++/Build/Settings/Discovery, [CDT GCC Built-in Compiler Settings MinGW] options C/C++ Scanner Discovery Problem
Or as a screenshot
What is going on here is Eclipse CDT is (attempting to) launch GCC and G++ to find out what the global settings are for things like include paths, etc.
To fix the problem, go to the Location specified in the error message and adjust the scanner settings. Here is the matching setting to go with the specific error I received.
Your error might be in the project or in the global settings.
To update the MinGW setting, you can provide the path to a batch file that looks like GCC/G++ but sets up your environment correctly first, or you can point directly at the GCC that Eclipse CDT did not find on its own.
For example you can have:
D:\path\to\my\compilers\${COMMAND}.exe ${FLAGS} -E -P -v -dD "${INPUTS}"
As the setting instead of the default.
To aid the debugging, check the Allocate console in the Console View to see exactly what is being run and what output is being generated.
And here is what you might see when it does not work. Hopefully the error messages in the console are sufficient to resolve the problem on your machine.
21:12:54 **** Running scanner discovery: CDT GCC Built-in Compiler Settings MinGW ****
"D:\\path\\to\\my\\compilers\\g++.exe" -E -P -v -dD C:/Temp/workspace/.metadata/.plugins/org.eclipse.cdt.managedbuilder.core/spec.C
Cannot run program "D:\path\to\my\compilers\g++.exe": Launching failed
Error: Program "D:\path\to\my\compilers\g++.exe" not found in PATH
PATH=[\bin;\bin; -- snip --]
21:12:54 Build Finished (took 37ms)
Here is a screenshot to match:
If it does work, you should see lots of #defines and the like showing the global state of your compiler.
I am trying to launch an application using sbt's application launcher.
This application is defined as:
#!/bin/sh
java -jar /home/salil.wadnerkar/.conscript/sbt-launch.jar #"/home/salil.wadnerkar/.conscript/n8han/conscript/cs/launchconfig" "$#"
However, when I launch it, it gives me this error:
$ ~/bin/cs n8han/giter8
Error during sbt execution: Could not find configuration file 'C:/MinGW/msys/1.0/home/salil.wadnerkar/.conscript/n8han/conscript/cs/launchconfig'. Searched:
file:/C:/MinGW/msys/1.0/home/salil.wadnerkar/
file:/C:/Users/salil.wadnerkar/
file:/C:/MinGW/msys/1.0/home/salil.wadnerkar/.conscript/
However, the file is present there. So, I think it's because of some quirk in the way sbt handles mingw file path.
Does anybody know how I can get it working?
In Cygwin I used
java -jar "`cygpath -m "$HOME/.conscript/sbt-launch.jar"`" "#file:///C:/Users/cvanvranken/.conscript/n8han/conscript/cs/launchconfig" "$#"
I expect you will be able to get yours to work with something similar, perhaps this:
java -jar /home/salil.wadnerkar/.conscript/sbt-launch.jar "#file:///C:/Users/salil.wadnerkar/.conscript/n8han/conscript/cs/launchconfig" "$#"
or
java -jar /home/salil.wadnerkar/.conscript/sbt-launch.jar "#file:///C:/MinGW/msys/1.0/home/salil.wadnerkar/.conscript/n8han/conscript/cs/launchconfig" "$#"
if those fail, you still definitely need to use the file:// protocol.
Also note the three directories it is searching in the error message
file:/C:/MinGW/msys/1.0/home/salil.wadnerkar/
file:/C:/Users/salil.wadnerkar/
file:/C:/MinGW/msys/1.0/home/salil.wadnerkar/.conscript/
no matter what you put in the launchconfig parameter, if it is not recognized then those directories are searched by default. So you could have gibberish in your parameter and still see the same exact error you are getting now.
you can set the launch config path relative to the .conscript folder -
java -jar /home/salil.wadnerkar/.conscript/sbt-launch.jar #n8han/conscript/cs/launchconfig "$#"
This feels silly, but its been 2 days...somewhere after upgrading from Ubuntu 10.04 to 10.11 and from Eclipse Helios to Eclipse Indigo, I got stuck with the following problem:
Problem Description:
I'm trying to use a function in math.h called isinf(), but the problem also occurs with things like isnan(). The program compiles fine on the command line using make and fine in eclipse using build. But if I open the program file in eclipse it reports that it cannot reolve the isinf() function call. If I just insert the program contents into a new project and new source file, the error appears immediately. This problem did not occur under 11.04 with Eclipse Helios CDT
Questions:
Why are these errors only reported when the program file is opened and not on when the program is compiled; why are the errors not detected make is run from the command line? Is there a solution/workaround available?
Version Info
Linux Ubuntu 10.11 64-bit
Eclipse CDT Indigo, Service Release 1, Build id: 20110916-0149
(Also using Eclipse EE Indigo – if that makes a difference)
GNU Make 3.81
gcc 4.6.1-9Ubuntu3
To Duplicate:
Please find the two files you'll need to replicate below:
Step 0. Verify that everything is fine outside of Eclipse
Copy the attached source file and make file
create a directory e.g. Mkdir FunTest
Save the source file a 'Test.cpp' and the makefile as 'makefile'
Open a command prompt and navigate to the directory e.g. FunTest
Enter 'make'
Enter ./TestOut
Program responds “is not infinite”
Step 1. Create the project in Eclipse
Open Eclipse
Select File|New|MakeFile Project with Existing Code
Click Browse – navigate to the directory (FunTest) and click ok
Select 'Linux GCC' from the Toolchain selector
Click Finish
Step 2. Find the Error
Click Build All (Ctrl-B) – project builds without errors
Open the project in the project explorer to display the file in the directory
Double click on the file “Test.cpp”
Note the error icon next to line testing for infinity
Note the 2 error messages:
Semantic error: Function _isinff could not be resolved
Semantic error: Function _isinfl could not be resolved
Test.cpp:
include <math.h>
int main(int argc, char **argv)
{
int TestNum = 10;
if (isinf(TestNum) == 0)
printf("Not infinite\n");
return 0;
}
makefile:
# Specify the compiler
CC = g++
# Specify the compiler flags
CFLAGS += -c
# Specify the files making up the application
SOURCES = Test.cpp
OBJECTS = $(SOURCES:.cpp=.o)
EXECUTABLE = TestOut
all: $(EXECUTABLE)
$(EXECUTABLE): $(OBJECTS)
$(CC) $(LDFLAGS) $(OBJECTS) $(LDLIBS) -o $#
.cpp.o:
$(CC) $(CPPFLAGS) $(CFLAGS) $< -o $#
install:
#echo "Build complete!"
I have experienced similar problems of the CDT reporting errors even though the code compiled fine within Eclipse Indigo.
Project > Properties > Settings > Binary Parsers > "GNU Elf Parser"
helped in my case. I had the "Elf Parser" checked.
That looks like a problem that many others have had with eclipse CDT before. Sometimes shutting eclipse down and then starting it back up again is enough to help. If that isn't the case, take a look at what I have below:
Compilation ok, but eclipse content assist having problems
Check your includes: if you're using include<math.h> change it to include<cmath>. The same for stdio.h and stdlib.h, you should replace by cstdio and cstdlib. Another option may be change you project to a C project instead of a C++.
You are missing -lm option in your build preferences.
Project->Properties->Settings->Miscleanous->Other (linker) flags[]
For me, it was solved by adding a specific ‘Source Location’ folder, and removing the default. In Luna, it is under:
Project > Properties > C/C++ General > Paths and Symbols > Source
Location
I have the following class and unit test in a PHP project in Eclipse:
I know my unit test works as I can run it at the command line:
Now I want to run this test from Eclipse. I set up PHP Unit in Eclipse like this:
However, when I run the PHPUnit tests:
It tells me that it can't include the class file:
/usr/bin/php -c /var/folders/UA/UAv38snBHd0QMgEPMCmM9U+++TM/-Tmp-/zend_debug/session4910937990995915704.tmp -d asp_tags=off /Applications/eclipse/plugins/org.phpsrc.eclipse.pti.tools.phpunit_0.5.0.R20101103000000/php/tools/phpunit.php --log-junit /var/folders/UA/UAv38snBHd0QMgEPMCmM9U+++TM/-Tmp-/pti_phpunit/phpunit.xml /Volumes/data/domains/et/extjslayout/phpunittest/tests
PHP Warning: include_once(../Product.php): failed to open stream: No such file or directory in /Volumes/data/domains/et/extjslayout/phpunittest/tests/ProductTest.php on line 3
PHP Warning: include_once(): Failed opening '../Product.php' for inclusion (include_path='/usr/local/PEAR') in /Volumes/data/domains/et/extjslayout/phpunittest/tests/ProductTest.php on line 3
PHP Fatal error: Class 'Product' not found in /Volumes/data/domains/et/extjslayout/phpunittest/tests/ProductTest.php on line 9
Why would PHPUnit be able to find the class when run from the command line but not when run from Eclipse?
When you start something from the command line, the "current directory" has a well-defined meaning: It's the directory where you started the command.
In Eclipse, what is the "current directory"? It's probably the directory from which you started Eclipse or maybe the folder in which Eclipse is installed.
I haven't used PHP in Eclipse before but for other languages, I can set the current directory in the launch config somewhere. If that doesn't work, define a variable which points to your project and then use absolute paths (using that variable as a starting point).
Have same problem. Found only solution by creating tests with internal PHPUnit wizard like at this screenshot:
Source: HowTo create a Test Case Class from a PHP Class
But following investigate show that your test case file should contain reference to tested code for example like this: require_once 'C:\Apache2\htdocs\jobeet\src\Ibw\JobeetBundle\Utils\Jobeet.php';
Other experiments with plugin config not bringing luck. So in my opinion PHPUnit from PHP Tools not well developed plugin. Consider using MakeGood plugin as better alternative.