1. nullobject for File in Java stackoverflow.comI have a class that occasionally gets passed |
2. while using g.drawImage(img,0,0,100,100,0,0,0,0,null) it does not produce any result? stackoverflow.comwhile using g.drawImage(img,0,0,100,100,0,0,0,0,null) it does not produce any result. So how to draw on the image in file of a better way? |
3. Retrieving the underlying error when File.listFiles return null stackoverflow.comAccording to the File.listFiles javadoc the method Returns null if this abstract pathname does not denote a directory, or if an I/O error occurs.I know that I ... |
4. Deserialized object has null in all fields stackoverflow.comI have written my |
5. How to serialize 'null' value? stackoverflow.comIn our company we write a simple serializer/deserializer in Java. Does anybody know what is the best way to serialize a |
6. Can't get file name? Always null stackoverflow.comHTML |
7. Java getClass().getResource("file") leads to NullPointerException stackoverflow.comException in thread "main" java.lang.NullPointerException at javax.swing.ImageIcon.(Unknown Source) at snake2.Board.(Board.java:52) ... |
8. JAVA; When The string from the file is printed on screen null is also printed along with it at the end stackoverflow.comSoo my program is working...but there is just one problem...null is also being printed along with the content or string from the file... is there anyway i can stop null from ... |
9. java object getClass() method returns null stackoverflow.comMy understanding is if a java object xx is not null there must be corresponding |
10. Getting NULL value at the end while writing to the file stackoverflow.comI have problem while writing to the file. I want to write contents of my input file to output file but while writing to the file, I am getting NULL ... |
11. form feed and null coderanch.com |
12. null and serialization coderanch.comHi, I have a question on serialization: If an object say a String Object whose value is null is serialized. how will it be represented in the stream. If there are 2 Strings whose values are null and empty string.which one will give a better performance when serialized. {i.e.) does having a value as null gives good performance while serializing. Thanks ... |
13. Externalizable and null values in read/writeExternal coderanch.comFor performance purposes I chose to implement Externalizable but I am running into null pointer exceptions if any of my members are null. Originally, I wrote this helper: private static void checkAndWriteUTF (ObjectOutput out, String value) throws IOException { if (value != null) { out.writeBoolean (true); out.writeUTF (value); } else { out.writeBoolean (false); } } private static String checkAndReadUTF (ObjectInput in) ... |
14. How do I replce NULL with "" Nothing at all?? coderanch.com |
15. Class.getResourceAsStream() is returning null coderanch.comI am trying to read a text file as a resource using Class.getResourceAsStream(), but it is returning null. I've checked everything I can think of. Hopefully I can provide enough detail here so you can understand what I'm doing and point out where I'm going wrong. First of all, I have the following method that is supposed to read the text ... |
16. any html file displays "null" coderanch.comNovice... I am using Tomcat 5.5. I tried servlet-examples. I tried to develop my first servlet and also developed html file to POST data on servlet. I renamed index.html which was there by default and put my index.html. Later,I thought that I shouldnt have done it, I renamed my index.html and put original index.html again. I restarted the server. But when ... |
17. Getting a null terminated string from a ByteBuffer/CharBuffer coderanch.com |
18. int[] = null; help coderanch.comHi all. As normal how we declare a string array when we dont know the size i.e how much data should be inserted then i give as String[] str = null. After that i can perform all the operations. When i try to do the same with int that is int[] arr = null. I dont get compilation error, when i ... |
19. Null SAXParser while creating getXmlReader() in Digeter class coderanch.comHi All, I am trying to read an xml file and it gives me the following error : java.lang.NullPointerException at org.apache.commons.digester.Digester.getXMLReader(Digester.java:1058) at org.apache.commons.digester.Digester.parse(Digester.java:1887) at com.bof.BusinessObjectFactory.getInstance(BusinessObjectFactory.java:57) at com.servlets.MyProcessingServlet.doPost(MyProcessingServlet.java:46) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3504) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.security.service.SecurityManager.runAs(Unknown Source) at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2186) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2092) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201) at weblogic.work.ExecuteThread.run(ExecuteThread.java:173) When I checked the Digester ... |
20. De-Serialization is returning Null values coderanch.comclass TestStreams { public static void main(String args[]) { Collar a=new Collar("Red"); Collar b=new Collar("Blue"); Dog d1=new Dog(40,a); Dog d2=new Dog(50,b); //Serialize try{ FileOutputStream fos=new FileOutputStream("testSer.ser"); ObjectOutputStream oos=new ObjectOutputStream(fos); oos.writeObject(d1); //writeObject() argument is the object to be serialized oos.close(); }catch(Exception e){ e.printStackTrace(); } //de-serialize try{ FileInputStream fis=new FileInputStream("testSer.ser"); ObjectInputStream ois=new ObjectInputStream(fis); d1=(Dog) ois.readObject(); //readObject() argument nullgh }catch(Exception e){ e.printStackTrace(); } System.out.println("Weight ... |
21. java.lang.IllegalArgumentException: im == null! coderanch.comByteArrayOutputStream baos = new ByteArrayOutputStream(); ImageIO.write( new_img, "jpg", baos ); //baos.flush(); byte[] imageInByte = baos.toByteArray(); byte[] testByte=imageInByte; // //convert byte array back to BufferedImage System.out.println("Before Size"+imageInByte.length); byte[] output_data=steg_process(imageInByte, hidden_data); // System.out.println("After Size"+output_data.length); InputStream in = new ByteArrayInputStream(testByte);// I tried 'output_data' initially, // but as it did not work, then i put 'textByte' just for testing purpose System.out.println("Available: "+in.available()); img = ImageIO.read(in); ... |
22. IOException returning null coderanch.comHello All, My first Java post ever!!! I was hoping somebody could help me out with a school project i'm working on. We are learning data streams and I'm stuck at a certain point. I'm not sure why i'm receiving a null when I try to read the order.txt file. Can somebody maybe take a look at the code and point ... |
23. Getting null when writing to file. coderanch.comHiya fellas, So I have some code I'm doing for practice, I'm passing a String value called "charName" into the method setCharacterName(). Then writing it to a file, but when i check the file to see if the save was successful, it says "name null". Which leads be to believe some where down the line the Value is lost, but im ... |
24. something wrong with null exception in I/O processing coderanch.com |
25. Size of serialized object with null values java-forums.orgI want to create a serializable object with many different fields, but where, in any given object, only a few of those fields will have values. What I'm wondering is, when I write one of those objects to a file, will the file be a smaller size because only a few of the fields have values or will it be a ... |
26. reading and writing to file , getting null when i try to read file content forums.oracle.comDefinitely the wrong forum. But more importantly, there's way too much code in there. I'm not sure what your problem is but it would be much easier for somebody to look at one quarter of that code. So please toss out all the stuff which is irrelevant to your question -- that's probably 90% of the code -- and repost a ... |
27. Output to file , file only shows null forums.oracle.comThen the array 'newBooks' only contains 'null' entries. My bet is that EITHER the array referenced by 'newBooks' that you are writing is not the same array you are filling OR you are a C++ programmer who thinks that declaring an array actually creates an array of objects and not just references to the objects each if which is initialized to ... |
28. this.getClass().getResource(fileName); always returns null! |
29. File(String path) - i put a path but the object points to null... forums.oracle.comOk so I have a bitmap image stored in the same folder as my java file. In the java file, I have the following code: File f = new File("test_image.bmp"); System.out.println(f.exists()); // output // false Where did I go wrong? What is the conventional way to specify the file path in java if the target file is 1) in the same ... |
30. How to read anything from a file untill it is null ?? forums.oracle.com |
31. Getting null and 0 outputting to screen or file. forums.oracle.com |
32. Inporting from file is coming up null forums.oracle.comI only get a blank space printed out Try changing the bit where you print the array elements so you can see exactly what robotApp contains: System.out.println(robotApp[k]); I don't use Scanner - but the docs say nextLine() advances the scanner past the current line and returns it (minus the terminator). This could leave room for problems if the file was generated ... |