Import java.util.class

Similar Questions

• Faulty decompression with java.util.zip

  Hello
  I want to use the java.util.zip classes to compress the contents of the files (BMP images) and later unpack for display. Strange thing is that the same method usihg some files decompress correctly, the other does not.
  I wrote the test code for compression/decompression of the contents of a file (input parameters are 'c leader ', compressed file is given the extension ".comp" which was released on decompression). Here are two images of test. Suite (compress the file & decompression the result):
  TestCompDecomp c A.bmp
  TestCompDecomp d A.bmp.comp... is OK
  but the same process with B.bmp leads to a corrupt image.

  package testcompdecomp;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.zip.DataFormatException;
  import java.util.zip.Deflater;
  import java.util.zip.Inflater;
  
  public class TestCompDecomp {
  
       static class Compressor {
            // compresses byte array, returns compressed bytes in array
            public byte[] compress(byte[] bytesToCompress){          
                 Deflater compressor = new Deflater(java.util.zip.Deflater.BEST_COMPRESSION);
                 compressor.setInput(bytesToCompress);
                 compressor.finish();
                 byte[] bytesCompressed = new byte[2000000];
  
                 int numberOfBytesAfterCompression = compressor.deflate(bytesCompressed);
                 compressor.end();
                 byte[] returnValue = new byte[numberOfBytesAfterCompression];
                 System.arraycopy(     bytesCompressed, 0,     returnValue,     0, numberOfBytesAfterCompression);
                 return returnValue;
            }
  
            // decompresses byte array, returns decompressed bytes in array
            public byte[] decompress(byte[] bytesToDecompress) throws DataFormatException {
                 Inflater decompressor = new Inflater();
                 int numberOfBytesToDecompress = bytesToDecompress.length;
                 decompressor.setInput( bytesToDecompress, 0, numberOfBytesToDecompress);
                 int compressionFactorMaxLikely = 3;
                 int bufferSizeInBytes = numberOfBytesToDecompress * compressionFactorMaxLikely;
                 byte[] bytesDecompressed = new byte[bufferSizeInBytes];
  
                 int numberOfBytesAfterDecompression = decompressor.inflate(bytesDecompressed);          
                 decompressor.end();
                 byte[] returnValue = new byte[numberOfBytesAfterDecompression];
                 System.arraycopy( bytesDecompressed, 0, returnValue, 0, numberOfBytesAfterDecompression);     
                 return returnValue;
            }
       }
       
       public static void main(String[] args) throws IOException, DataFormatException {
            if (args.length < 2) {
                 System.out.format("usage: TestCompDecomp <command> <file>%n%n");
                 System.out.format("<commands>%n  c   compress file%n  d   decompress file%n");
                 System.exit(-1);
            }
            byte[] input = null;
            byte[] output = null;
  
            //     read file content into array
            File inputFile = new File(args[1]);
            try (InputStream stream = new FileInputStream(inputFile)) {
                 long length = inputFile.length();
                 input = new byte[(int)length];
                 int offset = 0, numRead = 0;
                 while (offset < input.length && numRead >= 0) {
                      numRead = stream.read(input, offset, input.length-offset);
                      offset += numRead;
                 }
            } catch (IOException e) {
                 System.err.println(args[1]+": read error");
                 System.exit(-1);
            }
            // process the file content
            Compressor compressor = new Compressor();
            switch (args[0]) {
                 case "c":     // compression
                      output = compressor.compress(input);
                      break;
                 case "d":     // decompression
                      output = compressor.decompress(input);
                      break;
                 default: ;
            }
            // write the processed bytes to tne output file
            FileOutputStream outFile = null;
            String outFileName = args[1];
            switch (args[0]) {
                 case "c":
                      outFileName += ".comp";
                      break;
                 case "d":
                      outFileName = outFileName.replace(".comp", "");
                      break;
            }
            try {
                 outFile = new FileOutputStream(outFileName);
                 outFile.write(output);
            } finally {
                 if (outFile != null)
                      outFile.close();
            }
       }
  }

  Any idea please?
  
  Quido

  Welcome to the forum!
  >
  I want to use the java.util.zip classes to compress the contents of the files (BMP images) and later unpack for display. Strange thing is that the same method usihg some files decompress correctly, the other does not.
  >
  That's pretty much what you should expect when you write code that has absolutely NO verification errors or parameter control at all.

  GIGO - Garbage In, Garbage Out.

  Your compression method uses an array of bytes for a parameter. This byte array can be any legal size.

  Then you HARD-CODE the size of the byte array target/tablet to 2 million bytes. You want to keep only the fingers crossed that the compressed size will fall into this buffer. And your method does not check for errors.

  What makes you think that an array of bytes in the entry that is 1 GB in size will compress in 2 million bytes?

  Then you make similar assumptions for the method to decompress; you ASSUME that the decompressed data size will be no more than three times the compressed size.

  int compressionFactorMaxLikely = 3;
  int bufferSizeInBytes = numberOfBytesToDecompress * compressionFactorMaxLikely;
  byte[] bytesDecompressed = new byte[bufferSizeInBytes];
  

  And you already know what's going to happen if your assumtions are wrong.

  If you want to learn how to write good code you can not make any assumptions as you do. If you make assumptions, you need to add code to validate that your assumptions are correct, check the length of the tables being passed and add the error handling so that you know when things are bad.

  The foregoing would be bad enough, but the biggest mistake you do is reinvent the wheel. You write custom code to implement features that Java already provides for you.

  The best solution to your problem is to simply create a zip file standard of your entry. ALWAYS, ALWAYS, ALWAYS start with the simplest solution that meets your needs.

  A solution of zip files:

  1. the uses out of the box functionality Java – you have to write code that interacts with the API classes
  2. you can read/write the files of any arbitrary size without having to allocate buffers of unknown size.
  3. has a very minimal overhead in the zip file for the central directory structure of input data that are necessary for a single file and zip.
  4 makes it easy to inspect the contents of the zip file, because the file can be opened with ANY zip utility.
  5. makes it easy test read and write functionality separately. Just use Winzip or another utility to create a zip of an example of BMP file and then test your code to see if you can decompress.
  6. you can only work with the flow of input/output instead of arrays of bytes.

  I suggest abandon you your current approach and implement a read/write zip utility that interfaces with your BMP files you need. Only if that is not your needs in the long run you must use a custom approach.

  There are many simple examples on the web that show how to create, read and write zip using Java files. And here are two:
  http://www.java2s.com/Tutorial/Java/0180__File/Createazipfile.htm
  http://www.java2s.com/Tutorial/Java/0180__File/Readzipfile.htm

• How to pass the java.util.ArrayList < property > type attribute to a tag

  How to move a type attribute, java.util.ArrayList < my.entity.Property > to a Tag implementation class?
  
  Please advise!
  
  Thank you
  Joe
  

  package my.tags;
  
  import java.io.IOException;
  import java.util.ArrayList;
  
  import javax.servlet.jsp.tagext.SimpleTagSupport;
  import javax.servlet.jsp.JspException;
  
  import my.entity.Property;
  
  public class PropertiesTag extends SimpleTagSupport {
      private ArrayList<Property> properties;
  
      public void setProperties(ArrayList<Property> properties) {
            this.properties = properties;
       }
  
       public void doTag() throws JspException, IOException {
       ..
       }     
  }

  <?xml version="1.0" encoding="utf-8" ?>
  <taglib ...>
       <tag>
            <name>propertiesTag</name>
            <tag-class>my.tags.PropertiesTag</tag-class>
            <body-content>empty</body-content>
            <description>Displays the product selection left menu</description>
            <attribute>
                 <name>properties</name>
                 <required>true</required>
                 <rtexprvalue>true</rtexprvalue>
                 <type>java.util.ArrayList<my.entity.Property></type>
            </attribute>
       </tag>
  </taglib>

  Here is the error message:

  org.xml.sax.SAXParseException: The element type "my.entity.Property" must be terminated by the matching end-tag "</my.entity.Property>".

  As far as I know he did not use generics in a descriptor tag. Read the docs for this. Here is a quick tutorial on the writing of simple tags.

• Bean Java properties class that extends data control cannot get data on the user interface

  Hello
  
  I'm writing a bean something like the following and trying to create a control of data off of it:
  
  package model.beans;
  
  import java.util.Properties;
  
  SerializableAttribute public class PropBean extends properties {}
  
  String ID;
  The name of the string;
  public PropBean() {}
  Super();
  setName ("TURBO");
  setId("123");
  }
  
  public String getProperty (String key) {}
  If (key.equalsIgnoreCase ('name')) {}
  return getName();
  } else {}
  return getId();
  }
  }
  
  public String getProperty (String key, String Valeurdefaut) {}
  If (key.equalsIgnoreCase ('name')) {}
  return getName();
  } ElseIf (key.equals ("id")) {}
  return getId();
  }
  else {}
  return Valeurdefaut;
  }
  }
  
  
  public String getName() {}
  System.out.println ("GET =" + myIdName);
  Return myIdName;
  }
  
  public void setName (String name) {}
  myIdName = name;
  System.out.println ("VALUE =" + myIdName);
  }
  
  {} public void setId (String id)
  This.ID = id;
  System.out.println ("VALUE =" + this.id);
  }
  
  public String getId() {}
  System.out.println ("GET =" + this.id);
  return the id;
  }
  }
  
  When I binds the name and id attaributes text of output values do not appear on the screen.
  But if I do not extend class properties and then on the piece of code just works very well.
  
  The same thing happened when I extended HashMap.
  I had to override the method getObject (Object obj) to make it work.
  
  However I am still unable to run when the class extends a class of properties.
  
  See you soon,.
  REDA

  Hello

  When you extend HashMap then create you a hash table. Properties extend from HashTable, which seems to be similar. Tehre is a reason why your class should extend the properties instead of use the Properies class as a resource reference?

  Frank

• Conversion problem of oracle.jbo.domain.Date in java.util.Calendar and oracle.jbo.domain.Timestamp to oracle.jbo.domain.Date

  Hello world

  Work with dates has been harder than I thought! Please take a look at the code; everything compiles, but it fails because I'm not cast properly. Any help would be appreciated.

  Imports are:

  import java.sql.SQLException;

  to import java.text.ParseException;

  import impossible;

  import java.util.Calendar;

  Import oracle.jbo.domain.Date;

  Import oracle.jbo.domain.Timestamp;

  Here is the method:

  public static Date (String sDate, int day, nextDay

  SimpleDateFormat String) {}

  Date result = null;

  java.util.Date date;

  If (sDate! = null) {}

  try {}

  System.out.println ("Try...");

  Calendar calendar = Calendar.GetInstance ();

  SimpleDateFormat dateFormat =

  new SimpleDateFormat (simpleDateFormat);

  calendar.setTime (dateFormat.parse (sDate));

  Calendar.Set (Calendar.DAY_OF_WEEK, date); day = Calendar.SUNDAY

  Calendar.Set (Calendar.HOUR_OF_DAY, 0);

  Calendar.Set (Calendar.MINUTE, 0);

  Calendar.Set (Calendar.SECOND, 0);

  Calendar.Add (Calendar.DATE, 7);

  dateFormat.format (calendar.getTime ());

  try {}

  System.out.println ("try (inside)... ») ;

  "System.out.println (" new Timestamp (calendar.getTime () .getTime ()) "):" +.

  new Timestamp (calendar.getTime () .getTime ()));

  result = new Date (Timestamp (calendar.getTime () .getTime ())) new; Code does not work here.

  return the result;

  } catch (SQLException e) {}

  System.out.println ("catch (SQLException e)... ») ;

  e.printStackTrace ();

  }

  Returns a null value.

  } catch (ParseException exception) e {}

  System.out.println ("catch exception e ParseException... ») ;

  e.printStackTrace ();

  }

  Returns a null value.

  }

  Returns a null value.

  }

  Here is the result:

  try...

  Try (inside)...

  new Timestamp (calendar.getTime () .getTime ())): 2013-12-29 00:00:00.0

  catch (SQLException e)...

  java.sql.SQLException: failed initialization

  to oracle.sql.DATE. < init > (DATE.java:237)

  to oracle.jbo.domain.Date. < init > (Date.java:378)

  James

  try to convert timestamp to jbo.date as

  java.sql.Timestamp datetime =newjava.sql.Timestamp(System.currentTimeMillis());

  oracle.jbo.domain.Date daTime =new  oracle.jbo.domain.Date(datetime);

• Cannot convert abcd of the type class java.lang.String interface java.util.List

  Hello

  I get an error of "cannot convert the class type abcd java.lang.String interface java.util.List" where "abcd" is a string in a listbox.

  and my code is something like this

  < af:selectOneListbox id = "lstcatg" label = 'List of categories' partialTriggers = 'proud '.

  value = "#{viewScope.RegWoComp.lstboxcatg}" >

  < f: selectItems id = value="#{viewScope.RegWoComp.customList}"/ "lstselect1" >

  < / af:selectOneListbox >

  
  bean

  private list < String > lstboxcatg;

  {} public void setLstboxcatg (List < String > lstboxcatg)

  This.lstboxcatg = lstboxcatg;

  }

  public List < String > getLstboxcatg() {}

  Return lstboxcatg;

  }

  public BindingContainer {} getBindings()

  Return BindingContext.getCurrent () .getCurrentBindingsEntry ();

  }

  Private Sub button (ActionEvent actionEvent)

  {
  JUCtrlListBinding listBindings = (JUCtrlListBinding) getBindings () .get (lstboxcatg);
  Object [] str = listBindings.getSelectedValues ();

  for (int i = 0; i < str.length; i ++)

  {

  System.out.println (STR [i]);

  }
  }

  I tried to use this fact.

  object str = listBindings.getSelectedValue ();

  System.out.println (STR);

  and here, if I change the data type of lstBoxcatg

  private String lstboxcatg;

  {} public void setLstboxcatg (String lstboxcatg)

  This.lstboxcatg = lstboxcatg;

  }

  public String getLstboxcatg() {}

  Return lstboxcatg;

  }

  can I get a nullpointerexception on line object str = listBindings.getSelectedValue ();

  No you can use this code you don't use link layer

  remove this code. You will get the selected value in this string variable

  Just write this about you button action and verification.

  System.out.println (selectedVal);

  Ashish

• import java class of forms 6i

  Dear people
  I want to import the very simple java class of forms 6i, I went to programs then I choose to import java classes and then it gives me the error THAT BDP-UJ1001 could not create the Java virtual machine.
  
  Please tell me how to solve the problem.
  Yasser

  This option only works for the deployed Web Forms 6i version. Who does not work with C/S mode, because the C/S mode does not use Java at all.

  François

• Foglight v558 - Script fails with ScriptAbortException: script1001968: java.util.ConcurrentModificationException

  I have changed most of our rules through several Wssf and use a number of rule-level Variables. I got these variables through groovy scripts.

  Recently, I had to change a variable that appears in all the rules.

  This is the script that I have written so far:

  com.quest.nitro.service.sl.interfaces.rule import. *;

  def ruleInfo = "";
  def ruleSvc = server.get ("RuleService");
  def ruleList = ["DBSS - ADH Service status"];
  def varExp = "INST_NAME;
  def varText = "scope.parent_node.mon_instance_name";

  allRules = ruleSvc.getAllRules ();

  for (rule allRules) {}
  ruleName def = rule.getName ();
  def ruleCart = rule.getCartridgeName ();

  If (ruleList.contains (ruleName))
  If (ruleCart.equals ("DB_SQL_Server_UI")) {}
  def ExpressionSet = rule.getExpressions ();
  for (expression in ExpressionSet) {}
  If (expression.getName () .equals ("INST_NAME")) {}
  ExpressionSet.remove (expression);
  ruleInfo += "Removed variable $varExp of $ruleName \n";
  }

  }
  Add a new term
  ExpressionSet.add (rule.createExpression ("INST_NAME", varText));

  rule.setExpressions (ExpressionSet);
  ruleSvc.saveRule (rule);
  ruleInfo += "added $varExp variable $ruleName \n";
  }
  }

  Return ruleInfo;

  The part of the script that adds the variable work consistantly.  The part of the script removes it expresion of level rule fails most of the time with the following error:

  com.quest.nitro.service.sl.interfaces.scripting.ScriptAbortException: script1001968: java.util.ConcurrentModificationException

  I'm still fairly new to groovy and java script, but I gather that when I have to iterate over a collection that is changed in another thread, the iterator survey a java.util.ConcurrentModificationException.  I read that I should look somehow collection synchronization.  Before we go down this rabbit hole, I thought I would just ask here, how should I write this code then it work consistantly?

  This is due to brakes on an object. You can try to break your code into pieces. First of all try and get all the rules in a list that matches your criteria. Call it a refinedRuleList, and then iterate through this refinedRuleList for Expressions and remove them. This gives a try!

  Thank you

  #AJ Aslam

• Default value using ADFLogger.createADFLogger (java.lang.Class p1)

  Hello world

  I tried to understand how the new logger is created and initialized. When we use the "ADFLogger.createADFLogger (java.lang.Class c1)" method to create a log, the default logging level is initialized to null. But when I tried to investigate it, it is found that an instance of java.util.Logger is created with the default recording for the RECORD level.

  Question: How is the default logging level is changed to null? Should not the instance of ADFLogger has some default logging level...?

  Thank you

  I checked this and the answer lies in the javadoc

  getLevel

  java.util.logging.Level public getLevel()

  Download the log level that has been specified for this recorder. The result can be null, which means that they will leave to effective level of this recorder to its parent.

  Returns:

  level of this recorder

  So if you get null, it means that you inherit the MOM logging level. As the recorder build a tree you must back up the tree (using getParent()) until you get the recorder that returns a level not null.

  Timo

• ClassCastException: java.util.ArrayList cannot be cast to oracle.adf.view.f

  Hello
  
  I am currently check why I encounter this error in a line graph?
  
  Basically I have the managed bean

  public class TestMB
  {
    private List<Object[]> tabularData = new ArrayList<Object[]>();
  
    public void setTabularData(List<Object[]> tabularData)
    {
      this.tabularData = tabularData;
    }
  
    public List<Object[]> getTabularData()
    {
      
      return tabularData;
    }
  }

  In the code, I have this defined graphic line.

  <dvt:lineGraph id="lineGraph1" subType="LINE_VERT_ABS"
     emptyText="No Data To Display"
     value="#{backingBeanScope.TestMB.tabularData}"
     contentDelivery="immediate">
         <dvt:background>
            <dvt:specialEffects/>
         </dvt:background>
         <dvt:graphPlotArea/>
         <dvt:seriesSet>
            <dvt:series/>
         </dvt:seriesSet>
         <dvt:o1Axis/>
         <dvt:y1Axis/>
         <dvt:legendArea automaticPlacement="AP_NEVER"/>
  </dvt:lineGraph>

  But I continued to encounter this error.
  

  java.lang.ClassCastException: java.util.ArrayList cannot be cast to oracle.adf.view.faces.bi.model.DataModel

  My thought is that I would be able to display the emptytext attribute.
  
  JDeveloper 11.1.1.6
  
  Published by: Neliel Sep 9, 2012 23:51

  Neliel,

  You must link to the tabularData property and not to the value property.

  Arun-

• java.util.concurrent.Executor.execute)

  Hi all
  
  The API for java.util.concurrent.Executor.execute () says:
  
  Executes the given command at some point in the future. The command can execute in a new thread, a thread from the pool or in the calling thread, at the discretion of the implementation of the executor.
  
  If the calling thread is the EDT and I need to process something on a thread split to release the EDT and it is processed (by the execute() method) on the calling thread, which is the EDT, there would be a problem. Is there a way to tell execute() does not treat on the calling Thread?
  
  Thank you

  No standard implementations run on the current thread. It is all explained in the javadocs, with "known application classes.

• Uncompilable source code - wrong type java.util.Collections.sort sym

  Hello
  
  I'm doing an exercise. I need to set up my own behaviour SortedSet, based on an implementation of LinkedList. Basically I check if an item is not already present in the list and then I want to sort the list using Collections.sort (). This is my piece of code:
  

  public class MySortedSet<E> {
      
      LinkedList<E> list = new LinkedList<E>();
      
      public boolean add(E e) {
          if (!list.contains(e)) {
              list.add(e);
              Collections.sort(list); //this line throws exception
              return true;
          }
          return false;
      }
      
      public static void main(String[] args) {        
          MySortedSet<String> mss = new MySortedSet<String>();
          mss.add("First");
      }
  }

  Only, I get the following exception:
  

  Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: java.util.Collections.sort
       at chapter17.MySortedSet.add(MySortedSet.java:23)
       at chapter17.MySortedSet.main(MySortedSet.java:48)
  Java Result: 1

  ... that I do not actually understand. NetBeans, tells me: no suitable method found to sort (java.util.LinkedList < E >), the method of java.util.Collections. < T > sorting (java.util.List < T >) is not applicable, the infrerred type is not consistent with the declared boundaries, deducted: E, limits: java.lang.Comparable <? Super E >.
  
  Of this kind, I understand that my list object is not correctly stated on this point is the generic type. LinkedList generic type E, what is false. Can someone explain to me how do I correctly report LinkedList, or otherwise I do wrong. I'm not sure that understand this generic problem here.
  
  Thank you
  PR.

  Collections.sort can only sort comparable objects (or use a separate comparison). You would need to have a Comparable upper limit for E.

• How is that possible? -Online demo works without utility classes...

  Hi people

  I just uploaded a new swf and its packages to my server, and it works waited.

  However, within my Document class, I have two imports:

  import com.utils.calendarFunctions;
  import com.adobe.serialization.json.JSON;

  None of them are on my server - believe me I checked, many times.

  So how is it possible that my swf still works as if these two packages where he...

  Import actually incorporates these into the swf or what?

  Totally confused, any idea would be appreciated

  The swf file has no need of the .as files that could be used to create - feel free to clear up some server space if you have been upload the .as files.  The content of the .as file is essentially integrated in the swf file by the compilation process.

• java.util.prefs.BackingStoreException: flush() function: backup store is not available

  -JDK 7 (build 1.7.0 - ea-b114)
  -Windows 7 Professional 64 bit
  
  Hello, everyone!
  
  I get this error when you call the method of the class java.util.prefs.Preferences flush() :
  

  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences <init>
  WARNING: Could not create windows registry node Software\JavaSoft\Prefs\br at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences WindowsRegOpenKey1
  WARNING: Trying to recreate Windows registry node Software\JavaSoft\Prefs\br at root 0x80000002.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences openKey
  WARNING: Could not open windows registry node Software\JavaSoft\Prefs\br at root 0x80000002. Windows RegOpenKey(...) returned error code 2.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences WindowsRegOpenKey1
  WARNING: Trying to recreate Windows registry node Software\JavaSoft\Prefs\br\desenvolvimento at root 0x80000002.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences openKey
  WARNING: Could not open windows registry node Software\JavaSoft\Prefs\br\desenvolvimento at root 0x80000002. Windows RegOpenKey(...) returned error code 2.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences WindowsRegOpenKey1
  WARNING: Trying to recreate Windows registry node Software\JavaSoft\Prefs\br\desenvolvimento\iu at root 0x80000002.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences openKey
  WARNING: Could not open windows registry node Software\JavaSoft\Prefs\br\desenvolvimento\iu at root 0x80000002. Windows RegOpenKey(...) returned error code 2.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences WindowsRegOpenKey1
  WARNING: Trying to recreate Windows registry node Software\JavaSoft\Prefs\br\desenvolvimento\iu at root 0x80000002.
  06/11/2010 10:51:45 java.util.prefs.WindowsPreferences openKey
  WARNING: Could not open windows registry node Software\JavaSoft\Prefs\br\desenvolvimento\iu at root 0x80000002. Windows RegOpenKey(...) returned error code 2.
  Exception in thread "main" br.desenvolvimento.iu.Sistema$GerenciadorAutorizacao$ErroGravacaoInformacoesAutorizacaoException: java.util.prefs.BackingStoreException: flush(): Backing store not available.
          at br.desenvolvimento.iu.Sistema$GerenciadorAutorizacao$InformacoesAutorizacaoPreferencias.salvar(Sistema.java:877)
          at br.desenvolvimento.iu.Sistema$GerenciadorAutorizacao$InformacoesAutorizacao.salvar(Sistema.java:380)
          at br.desenvolvimento.iu.Sistema.main(Sistema.java:912)
  Caused by: java.util.prefs.BackingStoreException: flush(): Backing store not available.
          at java.util.prefs.WindowsPreferences.flush(WindowsPreferences.java:791)
          at br.desenvolvimento.iu.Sistema$GerenciadorAutorizacao$InformacoesAutorizacaoPreferencias.salvar(Sistema.java:873)
          ... 2 more

  My code:
  

  private final Preferences _preferencias = Preferences.systemNodeForPackage(getClass());
  private static final String CHAVE = "abc";
  
  @Override
  void salvar(String informacoesAutorizacao) throws ErroGravacaoInformacoesAutorizacaoException
  {
      _preferencias.put(CHAVE, informacoesAutorizacao);
      try
      {
          _preferencias.flush();
      }
      catch (BackingStoreException ex)
      {
          throw new ErroGravacaoInformacoesAutorizacaoException(ex);
      }
  }

  Any ideas how to solve this problem?
  
  Thank you.
  
  Marcos

  There is no option in the context menu of your pot.
  But if you create a shortcut pointing to java.exe or javaw.exe and have "-jar PathToMyJar.jar" as parameters.
  you will get the option "Run as Administrator" from the context menu. Also in the properties-> shortcut-> advanced, you can configure it to always ask for elevation.

  Now, this may seem messy for a user, but an installer can do all this for you.

• Where can I import java.lang.exception of?

  Hello
  
  I created my first web service stub and have successfully imported it in Oracle Forms 10 G.
  
  I get a java error but I can't manage because I did import java.lang.exception.
  
  I searched the web and found many places where it is said you need to import it, but I can't find anywhere that tells me where to import it from. I don't see in my java importer menu so I guess I should add its location to my class path.
  
  Any help to the location of this is greatly appreciated.
  
  Thank you
  Glenn

  It works for me:

  http://Groundside.com/blog/DuncanMills.php?title=exception_handling_in_forms_java_integra&more=1&c=1&TB=1&pb=1