FileInputStream.new myfile fails?

drrs · November 7, 2008, 9:44am

Why does this fail on Jruby 1.1.4?
Platform is Windows XP

myfile = ‘C:\test.xml’
fis = FileInputStream.new myfile

java.io.FileNotFoundException: (The system cannot find the
file
specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.(Unknown Source)
at java.io.FileInputStream.(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)

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drrs · November 7, 2008, 5:46pm

drrs wrote:

at java.io.FileInputStream.(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

That code appears to work fine with a file that exists. Does C:\test.xml
exist for you?

Charlie

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drrs · November 7, 2008, 6:01pm

Should it be ‘C:\test.xml’?

RaY

El 07/11/2008, a las 17:45, Charles Oliver N.
escribió:

at java.io.FileInputStream.(Unknown Source)

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drrs · November 7, 2008, 9:49pm

Trying something like this at the Ruby File class level is better for
me:

myfile = ‘c:\test.xml’
f = File.open(myfile, ‘r’)
contents = f.read
java_bytes = contents.to_java_bytes
puts ’ java bytes got ’

Thanks!

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drrs · November 7, 2008, 11:36pm

Even Java code running inside with
FileInputStream fis = new FileInputStream(path);

doesn’t work in JRuby???

This statement is used in a lot of places in the Java code…

Please let me know???

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drrs · November 7, 2008, 8:23pm

The file exists. I even tried C:\test.xml .

Here is the mostly the complete stack trace(below).
set JAVA_HOME=C:\jdk1.5.0_13 is used in _jrubyvars set.
Is there anything with encoding? UTF-8? Is it taking windows drive
letters
correctly.
Its just a simple Windows File read. Any alternatives?

Thanks for the response!
Rohit…

java/io/FileInputStream.java:-2:in open': java.io.FileNotFoundException: testng xmlparse.xml (The system cannot find the file specified) (NativeException) from java/io/FileInputStream.java:106:in ’
from java/io/FileInputStream.java:66:in <init>' from sun/reflect/NativeConstructorAccessorImpl.java:-2:in newInstance0’

    from sun/reflect/NativeConstructorAccessorImpl.java:39:in

newInstance' from sun/reflect/DelegatingConstructorAccessorImpl.java:27:in newInstan
ce’
from java/lang/reflect/Constructor.java:494:in newInstance' from org/jruby/javasupport/JavaConstructor.java:226:in new_instance’
from org/jruby/java/invokers/ConstructorInvoker.java:100:in
call' from org/jruby/java/invokers/ConstructorInvoker.java:180:in call’
from org/jruby/RubyClass.java:362:in finvoke' from org/jruby/javasupport/util/RuntimeHelpers.java:326:in invoke’
from org/jruby/java/proxies/ConcreteJavaProxy.java:48:in call' from org/jruby/runtime/CallSite.java:168:in cacheAndCall’
from org/jruby/runtime/CallSite.java:406:in call' from org/jruby/RubyClass.java:545:in call’
from
org/jruby/internal/runtime/methods/DynamicMethod.java:151:in
`call’

    from org/jruby/java/proxies/ConcreteJavaProxy.java:191:in `call'
    from org/jruby/runtime/CallSite.java:156:in `cacheAndCall'
    from org/jruby/runtime/CallSite.java:394:in `call'
    from C_3a_/mywork/trunk/jmdi.rb:37:in `__file__'
    from C_3a_/mywork/trunk/jmdi.rb:-1:in `__file__'
    from C_3a_/mywork/trunk/jmdi.rb:-1:in `load'
    from org/jruby/Ruby.java:544:in `runScript'
    from org/jruby/Ruby.java:457:in `runNormally'
    from org/jruby/Ruby.java:330:in `runFromMain'
    from org/jruby/Main.java:214:in `run'
    from org/jruby/Main.java:100:in `run'
    from org/jruby/Main.java:84:in `main'

Complete Java stackTrace
java.io.FileNotFoundException: testngxmlparse.xml (The system cannot
find
the fi
le specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.(FileInputStream.java:106)
at java.io.FileInputStream.(FileInputStream.java:66)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)

at

sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
onstructorAccessorImpl.java:27)
at
java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at
org.jruby.javasupport.JavaConstructor.new_instance(JavaConstructor.ja
va:226)
at
org.jruby.java.invokers.ConstructorInvoker.call(ConstructorInvoker.ja
va:100)
at
org.jruby.java.invokers.ConstructorInvoker.call(ConstructorInvoker.ja
va:180)
at org.jruby.RubyClass.finvoke(RubyClass.java:362)
at
org.jruby.javasupport.util.RuntimeHelpers.invoke(RuntimeHelpers.java:
326)
at
org.jruby.java.proxies.ConcreteJavaProxy$2.call(ConcreteJavaProxy.jav
a:48)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSit
e.java:168)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:4
06)
at org.jruby.RubyClass$SpecificArityNew.call(RubyClass.java:545)
at
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.j
ava:151)
at
org.jruby.java.proxies.ConcreteJavaProxy$ConcreteNewMethod.call(Concr
eteJavaProxy.java:191)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSit
e.java:156)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:3
94)
at C_3a_.mywork.jruby_jmdi.jmdi.file

    at org.jruby.Ruby.runScript(Ruby.java:544)
    at org.jruby.Ruby.runNormally(Ruby.java:457)
    at org.jruby.Ruby.runFromMain(Ruby.java:330)
    at org.jruby.Main.run(Main.java:214)
    at org.jruby.Main.run(Main.java:100)
    at org.jruby.Main.main(Main.java:84)

Charles Oliver N.-2 wrote:

specified)

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drrs · November 8, 2008, 2:30am

Try using “/test.xml”, or “c:/test.xml” instead of the ""

Nope. That didn’t help.

I am trying to think of possible ways I can debug it.
Cannot attach Eclipse debugger to Java code.

And trying to think what could be possible causes for it.
In fact, the absolute path is printed with the File not found message,
but
the path is correct.
May be knowing the exact mechanism like LOAD_PATH JRuby uses.
But then why would it not work with the absolute path.

This would have been great…as I have really started to like
JRuby…but…

Can you test and confirm it works on your system? I will try to test on
another machine then…

Thanks.

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drrs · November 7, 2008, 11:38pm

Even Java code running inside with
FileInputStream fis = new FileInputStream(path);

doesn’t work in JRuby???

This statement is used in a lot of places in the Java code…

Please let me know???

–

Try using “/test.xml”, or “c:/test.xml” instead of the “”

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drrs · November 8, 2008, 7:02am

drrs wrote:

Can you test and confirm it works on your system? I will try to test on
another machine then…

Can you just try this code and make sure it works:

File.open(‘C:\test.xml’)

or

File.open(‘C:/test.xml’)

That’s the Ruby File class, and if it doesn’t work there’s something
else wrong on your system.

Charlie

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drrs · November 8, 2008, 11:02pm

Charles Oliver N.-2 wrote:

stream.
Anyways, I could run the test using JRuby once the ruby did the directory

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drrs · November 14, 2008, 5:20am

Glad you figured it all out If you feel like your experience would be
interesting to others, please add something to the wiki

drrs wrote:

Problem was the Error reporting here said the file path not found, where

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FileInputStream.new myfile fails?

java.io.FileNotFoundException: (The system cannot find the file specified) at java.io.FileInputStream.open(Native Method) at java.io.FileInputStream.(Unknown Source) at java.io.FileInputStream.(Unknown Source) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

java.io.FileNotFoundException: (The system cannot find the
file
specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.(Unknown Source)
at java.io.FileInputStream.(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)