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Trying to read *.xlsx file using POI API

I am trying to read an *.xlsx file and i receive quite a lot of errors in the console. I am a beginner at this and please note that if i try to read *.xls files i have no problems there.
This is the code that i use:
public class XlsxTest {
public static void main(String[] args) throws IOException {
FileInputStream fis = new FileInputStream(new File("autotest2.xlsx"));
XSSFWorkbook wb = new XSSFWorkbook(fis);
XSSFSheet sheet = wb.getSheetAt(0);
FormulaEvaluator formulaEvaluator = wb.getCreationHelper().createFormulaEvaluator();
for (Row row : sheet) {
for (Cell cell : row) {
switch (formulaEvaluator.evaluateInCell(cell).getCellType()) {
case Cell.CELL_TYPE_NUMERIC:
System.out.println(cell.getNumericCellValue() + "\t\t");
break;
case Cell.CELL_TYPE_STRING:
System.out.println(cell.getStringCellValue() + "\t\t");
break;
}
}
System.out.println();
}
}
}
When i try to run this i receive the following errors:
Exception in thread "main" org.apache.poi.POIXMLException: java.lang.reflect.InvocationTargetException
at org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:62)
at org.apache.poi.POIXMLDocumentPart.read(POIXMLDocumentPart.java:465)
at org.apache.poi.POIXMLDocument.load(POIXMLDocument.java:173)
at org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:278)
at XlsxTest.main(XlsxTest.java:18)
Caused by: java.lang.reflect.InvocationTargetException
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 org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:60)
... 4 more
Caused by: java.lang.ExceptionInInitializerError
at org.apache.xmlbeans.impl.schema.BuiltinSchemaTypeSystem.fillInType(BuiltinSchemaTypeSystem.java:1025)
at org.apache.xmlbeans.impl.schema.BuiltinSchemaTypeSystem.<clinit>(BuiltinSchemaTypeSystem.java:223)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.xmlbeans.XmlBeans.getNoType(XmlBeans.java:856)
at org.apache.xmlbeans.XmlBeans.<clinit>(XmlBeans.java:881)
at org.openxmlformats.schemas.drawingml.x2006.main.ThemeDocument$Factory.parse(Unknown Source)
at org.apache.poi.xssf.model.ThemesTable.<init>(ThemesTable.java:83)
... 9 more
Caused by: java.lang.RuntimeException: Installation Problem??? Couldn't load messages: Can't find bundle for base name org.apache.xmlbeans.impl.regex.message, locale en_US
at org.apache.xmlbeans.impl.regex.RegexParser.setLocale(RegexParser.java:88)
at org.apache.xmlbeans.impl.regex.RegexParser.<init>(RegexParser.java:78)
at org.apache.xmlbeans.impl.regex.ParserForXMLSchema.<init>(ParserForXMLSchema.java:28)
at org.apache.xmlbeans.impl.regex.RegularExpression.setPattern(RegularExpression.java:2996)
at org.apache.xmlbeans.impl.regex.RegularExpression.setPattern(RegularExpression.java:3009)
at org.apache.xmlbeans.impl.regex.RegularExpression.<init>(RegularExpression.java:2975)
at org.apache.xmlbeans.impl.regex.SchemaRegularExpression.<init>(SchemaRegularExpression.java:27)
at org.apache.xmlbeans.impl.regex.SchemaRegularExpression.<init>(SchemaRegularExpression.java:23)
at org.apache.xmlbeans.impl.regex.SchemaRegularExpression$1.<init>(SchemaRegularExpression.java:44)
at org.apache.xmlbeans.impl.regex.SchemaRegularExpression.buildKnownPatternMap(SchemaRegularExpression.java:43)
at org.apache.xmlbeans.impl.regex.SchemaRegularExpression.<clinit>(SchemaRegularExpression.java:38)
... 19 more
Can anyone help me with this issue? I hope that i provided the necessary information.
Thank you!

Rename jar of lib in zip or simply open org/apache/xmlbeans/impl/regex of loaded lib.
Find file message.properties (and message_xx.properties if necessary).
Put file(s) in used library by org/apache/xmlbeans/impl/regex path.
Profit!

I experienced the very similar exception when using Apache POI: a java.lang.ExceptionInInitializerError, caused by "java.lang.RuntimeException: Installation Problem??? Couldn't load messages: Can't find bundle for base name org.apache.xmlbeans.impl.regex.message" in XMLBeans.
Looked completely weird. Code worked on one machine but failed this way on another for no apparent reason.
After LOTS of debugging hours, I found out the reason was COMPLETELY unrelated to Excel, POI or XMLBeans: my project was located in the folder ending with "!". The solution was simply to rename the folder.
I guess the author had something similar happening, and indeed the linked post about Libre Office has nothing to do with this problem. Instead, the linked post should be the following: Unable to open resources in directories which end with an exclamation mark (!)

Got this error ONLY in junit test. Application runs perfectly fine. So check your case as well.
For test, following Sarck's suggestion worked. #4 is little confusing. So below is simple process.. works fine for 2.6 version of xmlbeans library.
In your project where this is failing, create a file named message.properties under src/test/resources/org/apache/xmlbeans/impl/regex folder. (src/test/resources is typical maven root resource folder). Add following content in that file
parser.parse.1=Wrong character.
parser.parse.2=Invalid reference number.
parser.next.1=A character is required after \\.
parser.next.2='?' is not expected. '(?:' or '(?=' or '(?!' or '(?<' or '(?#' or '(?>'?
parser.next.3='(?<=' or '(?<!' is expected.
parser.next.4=A comment is not terminated.
parser.factor.1=')' is expected.
parser.factor.2=Unexpected end of the pattern in a modifier group.
parser.factor.3=':' is expected.
parser.factor.4=Unexpected end of the pattern in a conditional group.
parser.factor.5=A back reference or an anchor or a lookahead or a lookbehind is expected in a conditional pattern.
parser.factor.6=There are more than three choices in a conditional group.
parser.atom.1=A character in U+0040-U+005f must follow \\c.
parser.atom.2=A '{' is required before a character category.
parser.atom.3=A property name is not closed by '}'.
parser.atom.4=Unexpected meta character.
parser.atom.5=Unknown property.
parser.cc.1=A POSIX character class must be closed by ':]'.
parser.cc.2=Unexpected end of the pattern in a character class.
parser.cc.3=Unknown name for a POSIX character class.
parser.cc.4='-' is invalid here.
parser.cc.5=']' is expected.
parser.cc.6='[' is invalid in a character class. Write '\\['.
parser.cc.7=']' is invalid in a character class. Write '\\]'.
parser.cc.8='-' is an invalid character range. Write '\\-'.
parser.ope.1='[' is expected.
parser.ope.2=')' or '-[' or '+[' or '&[' is expected.
parser.ope.3=The range end code point is less than the start code point.
parser.descape.1=Invalid Unicode hex notation.
parser.descape.2=Overflow in a hex notation.
parser.descape.3='\\x{' must be closed by '}'.
parser.descape.4=Invalid Unicode code point.
parser.descape.5=An anchor must not be here.
parser.process.1=This expression is not supported in the current option setting.
parser.quantifier.1=Invalid quantifier. A digit is expected.
parser.quantifier.2=Invalid quantifier. Invalid quantity or a '}' is missing.
parser.quantifier.3=Invalid quantifier. A digit or '}' is expected.
parser.quantifier.4=Invalid quantifier. A min quantity must be <= a max quantity.
parser.quantifier.5=Invalid quantifier. A quantity value overflow.
Duplicate this file as message_en.properties at same location.
If you are using newer version of xmlbeans jar then get content of this file from Apache source - replace version in url

Need help to resolve the exception java.lang.NoSuchMethodError: org.neo4j.graphdb.factory.GraphDatabaseSetting$BooleanSetting

Can any body suggest me which jar i shld use to resolve the below exception,
Exception in thread "main" java.lang.NoSuchMethodError: org.neo4j.graphdb.factory.GraphDatabaseSetting$BooleanSetting.<init>(Ljava/lang/String;)V
at org.neo4j.shell.ShellSettings.<clinit>(ShellSettings.java:37)
at sun.misc.Unsafe.ensureClassInitialized(Native Method)
at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(Unknown Source)
at sun.reflect.ReflectionFactory.newFieldAccessor(Unknown Source)
at java.lang.reflect.Field.acquireFieldAccessor(Unknown Source)
at java.lang.reflect.Field.getFieldAccessor(Unknown Source)
at java.lang.reflect.Field.get(Unknown Source)
at org.neo4j.kernel.configuration.AnnotatedFieldHarvester.findStatic(AnnotatedFieldHarvester.java:47)
at org.neo4j.kernel.configuration.AnnotationBasedConfigurationMigrator.<init>(AnnotationBasedConfigurationMigrator.java:40)
at org.neo4j.kernel.configuration.Config.<init>(Config.java:89)
at org.neo4j.kernel.InternalAbstractGraphDatabase.<init>(InternalAbstractGraphDatabase.java:218)
at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:103)
at org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:88)
at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:207)
at org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(GraphDatabaseFactory.java:69)
at com.Neo4J.src.EmbeddedNeo4j.createDb(EmbeddedNeo4j.java:48)
at com.Neo4J.src.EmbeddedNeo4j.main(EmbeddedNeo4j.java:38).
I have already included the below jar,
neo4j-kernel-1.9.3.jar.
Thanks.

Make sure you have the matching neo4j-shell jar file.
The command javap -v -classpath neo4j-shell-1.9.3.jar org.neo4j.shell.ShellSettings | grep invoke indicates to me that there are only five methods called by ShellSettings. One is the Object default constructor, but that's during the constructor for ShellSettings, not the static class initialization <clinit>. The others are all from class org.neo4j.helpers.Settings. setting is called four times, in two different overloaded versions, matches and illegalValueMessage each once.
So in the 1.9.3 version of neo4j, the call to the constructor of GraphDatabaseSetting$BooleanSetting which is mentioned in your stack trace does not occur. therefore your ShellSettings class must come from some other version which is not binary compatible to 1.9.3. Use compatible versions, and you should be fine.

Java filename with bracket

I'm always getting an error when I try to read some files from my flashdrive. All of the files contain a left parenthesis but not a right one. I have too many files to change each file seperately.
Thats my code:
String src;
src = "C:\\Users\\Marc\\Desktop\\Musik\\02 The Uncrushables (feat. ILL Bill.mp3"
File tempMP3 = new File(src);
And that the Error message I'm getting:
Exception in thread "main" org.farng.mp3.TagException: Unable to create FilenameTag
at org.farng.mp3.MP3File.<init>(Unknown Source)
at org.farng.mp3.MP3File.<init>(Unknown Source)
at org.farng.mp3.MP3File.<init>(Unknown Source)
at NewID3.main(NewID3.java:55)
Caused by: org.farng.mp3.TagException: Unmatched parenthesis in "02 The Uncrushables (feat. ILL Bill" at position : 20
at org.farng.mp3.filename.FilenameTagBuilder.parseParenthesis(Unknown Source)
at org.farng.mp3.filename.FilenameTagBuilder.createCompositeFromToken(Unknown Source)
at org.farng.mp3.filename.FilenameTagBuilder.createFilenameTagFromMP3File(Unknown Source)
... 4 more
Java Result: 1
Does anybody know how I can solve this?
Thanks for ur help in advance!
PS: If i haven't explained myself clearly enough please tell me and I'll try to do better.

It's not Java per se. It's the library you're using.
Caused by: org.farng.mp3.TagException: Unmatched parenthesis in "02 The Uncrushables (feat. ILL Bill" at position : 20
at org.farng.mp3.filename.FilenameTagBuilder.parseParenthesis(Unknown Source)
Your library is attempting to parse the filename. A simple Java File object wouldn't care at all.

Why are classLoader magic values in defineClass() throwing an exception?

I want to write a classLoader that can help me implement customized classes and ultimately a whole component at run time. Right now I'm in process of loading the class.
I'm trying to load this role.java file. However when I get to this part of the code:
myClass = super.defineClass(className, classData, 0, classData.length);
I get this exception:
Exception in thread "main" java.lang.ClassFormatError: Incompatible magic value 1885430635 in class file C:\Users\ARIFAH\Downloads\Compressed\eUML2 free version\with classLoader code\2\archetypedComponentWithNull\src\aC\Role/java
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at customCL.customClassLoader.loadClass(customClassLoader.java:116)
at java.lang.ClassLoader.loadClass(Unknown Source)
at customCL.customClassLoader.main(customClassLoader.java:145)
I've read posts saying "you need something like OSGi". That would be similar to working on something new from scratch, which I'd like to avoid.
Why am I getting this error?

You aren't actually loading a real class file. The magic value of any valid class file is 0xCAFEBABE, and this magic in hex is 0x7061636B.
Notice that if we convert 0x7061636B to ASCII byte by byte, it turns out to be the string "pack". This means that the file you think is a class file actually starts with the string "pack".

Is the order of the value inside the CLASSPATH matter?

I have 2 java program located seperately
One in c:\test and the other in c:\test\new
I can compile both of it without any error \javac
But when i try to execute the file \java
it shows the error like this
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at ButtonFrame.makeButton(ButtonTest3.java:42)
at ButtonFrame.<init>(ButtonTest3.java:29)
at ButtonTest$1.run(ButtonTest.java:17)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
i put this in my classpath
CLASSPATH value- C:\test;C:\test\new
but if i change the order of the value in CLASSPATH to this
CLASSPATH value- C:\test\new;C:\test
the error is simply gone
Why?? this could happening
Only the order matters?

You've a class with the same name in the both folders. In C:\test there's a version of the ButtonTest3 class which contains a programming bug causing this NullPointerException. In C:\test\new there's a different version of the ButtonTest3 class which doesn't contain this bug, or probably there's a ButtonTest class which does entirely different things than the one in C:\test.
Cleanup your classpath. It's not good to have duplicate different versioned classes with the same signature in the classpath. If your intent is that new is supposed to be a package identifier, then you need to leave it away from the classpath. However, such a package name would have resulted in a compilation error, so that can't be it.
As to the bug, a NullPointerException is relatively trivial to naildown and fix. First look at the first line of the stacktrace:
at ButtonFrame.makeButton(ButtonTest3.java:42)
It's telling that it has occurred in line 42 of ButtonTest3 class, inside the makeButton() method. Now go to line 42 of ButtonTest3.java, it'll look something like:
someObject.doSomething();
Look there where a dot operator . is been used to invoke a method or access a field of some object. The NullPointerException means that someObject is null at the particular moment. There is no instance!
It's an easy fix: just ensure that it is not null at the moment you're invoking/accessing it:
someObject = new SomeObject();
// ...
someObject.doSomething();

Well, I don't believe you can have two classes defined in a single source file. You can have them defined as a subclass.
According to the Java spec:
Each class file contains the
definition of a single class or
interface. Although a class or
interface need not have an external
representation literally contained in
a file (for instance, because the
class is generated by a class loader),
we will colloquially refer to any
valid representation of a class or
interface as being in the class file
format.format.
You could place ButtonFrame inside ButtonTest2.
public class ButtonTest2
{
public static void main(String[] args)
{
...
ButtonFrame frame = new ButtonFrame();
}
class ButtonFrame extends JFrame {
....
}
}
Or, put them in different java files.

You have two classes at top level in program, thats wrong. But keeping that aside, your program is not getting compiled at first place.
To successfully compile the program use the following NppExec script:
cmd /c cd "$(CURRENT_DIRECTORY)" && "%JAVA_HOME%\bin\javac" "$(FULL_CURRENT_PATH)"
cmd /k cd "$(CURRENT_DIRECTORY)" && "%JAVA_HOME%\bin\java" "$(NAME_PART)" && exit
Make sure that you have your JDK folder set to JAVA_HOME environment variable.
and try again.