1. Dealing with bytes in java coderanch.com |
2. Convertion between SecretKey to String or byte coderanch.comHi.I am not so good in Java. I need to know how to convert a DES SecretKey generated using Java to a String and vice versa. I am doing a program in java using DES. It is needed to convert the SecretKey (which is for encryption) to String and has to be sent to another process and in there, the same ... |
3. Is anything smaller than byte ...... coderanch.com |
4. byte... x coderanch.com |
5. byte[] to String coderanch.com |
6. download bytes coderanch.com |
7. Byte[] to String and Back coderanch.comHi, i am trying to convert my pdf bytes[] to string and getting this particular byte[] back in some other class. while i try to set my initial bytes[] to a string,i do the following String abc = pdfbytes.tostring(); But abc contains the reference.When i try to get the bytes back from this reference using Bytes[] def = new String(abc).getbytes(); The ... |
8. Byte Packing/Unpacking coderanch.comOk, so I've been trying to figure out bitwise operators and such, and have gone through examples and tutorials, and I can't seem to grasp it because none of them seem to explain what their goal is, so I've come up with a hypothetical, and would appreciate it if someone could show me an example Say I have 8 values that ... |
9. Print RAW BYTES to thermal printer coderanch.com |
10. Adding two bytes coderanch.com |
11. byte promotion coderanch.com |
12. How to get byte of arralylist coderanch.com |
13. raw bytes coderanch.com |
14. Writing bytes to a device (disk) coderanch.comI've read/written bytes to files for several projects but I'm wondering if I can write bytes directly to a disk. I need to write a byte pattern over an entire disk. Is there some way I would just access it using the File class or is it more involved? Any guidance is appreciated. |
15. what is raw bytes ? coderanch.comI am trying to understand input stream. When I want to read from a file, I can just use FileReader. I am never inputting bytes from a file. So when do I use InputFileStream to input bytes from a file ? Its possible, when I am trying to get data from a socket. Otherwise, its just character data. when do I ... |
16. Play video from Byte[] coderanch.com |
17. Why does Byte do this? coderanch.com |
18. How to get the MSB of a Byte? coderanch.com |
19. Final Byte variable coderanch.comclass Test{ public static void main(String arg[]){ int x=10; int y=20; int z=x+y; System.out.println(z); byte b1=10+20; System.out.println(b1); byte b2=10; byte b3=20; //byte b4=b2+b3; //It is giving error final byte b5=10; final byte b6=20; byte b7=b5+b6; // Why it is not giving error System.out.println("b7"+b7); //int x1=10+20l; long l1=10+20l; //int x2=10+20.0f; float f1=10+20.0f; System.out.println(f1); //long l2=10.0f+20l; float f2=10.0f+20l; byte bb1=10; //byte bb2=bb1+20.0; double ... |
20. Bytes retrieval coderanch.comThat's not going to happen if "c" remains formatted like that. The "[B@19821f" means an array ("[") of bytes ("B") with hexidecimal hash code 19821f. For arrays it's 100% impossible to get the contents when all you have is a hash code. The hash code doesn't represent the array elements, just the array itself. And that array may no longer exist. ... |
21. Object to byte[] coderanch.comDear all, I use the code below to write object into file. However, in the final file, i also have the class name and the signature of the class. Due to the security problem, i want to get rid of them. How can I implement it in Java ? public class Main implements java.io.Serializable { //Key key; public Main () { ... |
22. Need a function for byte operation coderanch.comHi , Please find more detail: Reading a binary file and store entire bytes in a arraylist List |
23. seek deals in bytes? coderanch.com |
24. how to store 255 in byte coderanch.commy main problem is how to store the value 255 in a byte in java. in my theme : i am making a reader and writer for a bmp image . so i am unable to read the unsigned byte values(means to read & write value >128) in single byte only. i.e like i want to store byte b=255; in any ... |
25. Byte to String problem coderanch.comI'm trying to make a simple "Hangman-game". I've got 3 classes that's interesting in this case. My problem is that, I'm sending a message to my server, containing of a string "start_game". In my connectionhandler I've said that "If the message is start_game, run the method run() in "HangmanGame". The problem is that it doesint call the method "run()" but instead ... |
26. byte[] to string - Not working coderanch.com |
27. dynamically expanding byte container? java-forums.orgHello everyone, Imagine this scenario: You have a message which you receive as blocks of bytes. The total size of the message is unknown from the start but is indicated to you in the last block (imagine with EOF). I cannot use a byte array of fixed size because the max size is unknown from the start. I need something that ... |
28. Byte class ? java-forums.org |
29. XOR operation on bytes java-forums.orgI want to do a XOR operation on bytes. I am using two bytes variable whose size is 16 bytes each e.g byte[] buf = new byte[16] byte[] buf1 = new byte[16] can i do a XOR operation on the two byte variables a statement like buf = buf ^ buf1 gives me an error.do i need to do XOR opearation ... |
30. Byte value comes out negative java-forums.org |
31. byte[] java-forums.org//client { Socket skt = new Socket("localhost", 4444); System.out.print("Socket is open."); OutputStream out = skt.getOutputStream(); DataOutputStream dout = new DataOutputStream(out); dout.write([COLOR="Red"]M1e[/COLOR], 0, 48); System.out.print(M1e+ "sent"); out.close(); } //server { byte[] bytes = new byte[65536]; Socket skt = srvr.accept(); System.out.print("Server has connected!\n"); InputStream ins = skt.getInputStream(); DataInputStream din = new DataInputStream(ins); din.read([COLOR="Red"]bytes[/COLOR]); System.out.print("Received"); System.out.println(bytes); } |
32. Expressing a byte string java-forums.orgI need to know how to express a byte string literal in Java. I also need to compare it to a string of bytes that I'm reading from a file. I know how I'd do this in C. I'd have something like "\x000\x001\x002" (I think) then I'd then compare it with memcmp(). How do I do the same in Java? |
33. Trimming trailing zeros in a byte java-forums.orgDear community, I present you with a pair of methods. The main method executes the convert method (which I learnt thanks to a member, unfortunately I forgotten his name but I thank him again for his help). The convert method basically takes an integer and delivers its bitwise representation to be stored in a byte. public static void main(String[] args) { ... |
34. Computing bytes java-forums.orgHow do I write a code if there are 20 school teachers and 100 students in the school. If everything is managed in a program, each teacher object requires 200 bytes, each student object requires 100 bytes, how do I write the expression and compute the total # of bytes required to store all the objects in the program? |
35. Going from byte[] to Jpeg on disk java-forums.orgHi everyone, I want to go from an array of bytes to a file written on disk. I found some ways to do this online, but they were all doing a somewhat roundabout way. (They set up a Graphics2d object to draw the image, pass it through a RenderedImage object, then use ImageIO.write class from the standard IO methods to get ... |
36. byte problems forums.oracle.comI am trying to get the middle 2 bytes from a binary byte[] and display the results for testing purposes, but my display only shows 10 bits and I cannot see why. response is the 4 byte binary array. I need the middle 2 bytes. Here is the code: byte[] ba = new byte[2]; ba[0] = response[1]; ba[1] = response[2]; Then ... |
37. byte to string forums.oracle.comOk, I will...it's such a pain because even at 8K running in its own thread, it has go to one of the method provided above to convert an entire array of bytes into unencoded strings. Some packages were not even long at all, some might as small as 10 bytes. I know for a fact, this is very doable in C++/C ... |
38. Byte Information forums.oracle.comI am having difficulty understanding how to send a "packed" set of bytes across a socket. I have a socket setup between a server and client and I need to send a packet of 2 bytes over this socket. The packet contains an integer for the first byte and a character in the second byte. How do I set this up? ... |
39. Byte to String forums.oracle.com |
40. Compilation error Constucting new Byte forums.oracle.com |
41. byte data type-arithmetic forums.oracle.com |
42. 128 byte data type forums.oracle.com |
43. Simple string / bytes problem forums.oracle.com |
44. How to represent a byte in java forums.oracle.com |
45. String byte storage forums.oracle.comAlso I believe that the class file format stores characters in utf8, whereas a loaded class uses utf16. So there's a difference between a class on disk vs a class in memory. (I haven't actually checked this, I'm basing it on some circumstantial evidence. Check the JVM spec for an authoritative source.) |
46. Byte's forums.oracle.com |
47. Byte trouble! forums.oracle.comHello I am well and truly stuck! Well basically im making a program that converts whatever you type in to a byte value aka string to byte conversion, that bit works fine! But.... Theres another screen where you enter the byte value in a JTextField, and i need to be able to convert it back to a String, but the thing ... |
48. Byte - compilation error forums.oracle.com |
49. Writting to Bytes forums.oracle.comHi all Java Minds...... In my project, am in need to write bytes as follows. For eg,. if we take Credit card, the card number should have card id with 16 bytes. The card id was splitted as Card Type - 2 Bytes Version - 2 Bytes Unique ID - 4 Bytes Card Flag - 1 Byte Card Specific Type - ... |
50. byte[] to string? forums.oracle.comHello! and thank you in advance. I am performing a search of a (huge) text file. I found it to be most efficient in searching to convert the search String to a byte[] array, open up the file as a FileInputStream, and search the Stream byte-by-byte against the search String byte[] array. Having done this, I can confirm that the string ... |
51. byte data type : possible loss of precision forums.oracle.combyte x = 1; x = x + 1; The error is possible loss of precision, however the following code DOES work... byte x = 1; x+=1; Also after research I discovered the loss may be due to the JVM converting all variables to Int, therefore the resulting value can not go back to be stored in my byte variable 'x'. ... |
52. From byte[] to String? forums.oracle.comConverting bytes to a String will give different results depending on the character set used. If the bytes were created from chars in one encoding, then you make a String out of them with another, you'll get a garbled String. You can specify char encodings when converting, but this can limit your portability if the system you're running on doesn't have ... |
53. Problem with bytes and Byte forums.oracle.com |
54. LZW Compression - Can you concatinate Bytes in java? forums.oracle.comHi Jos, Hmm - can you give me an example. Looking at the document, I cannot see how it will help me. There is a read meathod which will allow me to go through the entire ByteStream and using that I can compare each byte. However, how would I combine say current byte and next one. LZW works if the current ... |
55. about byte! forums.oracle.com |
56. Byte && >> question forums.oracle.com0x7F = 0111 1111 = 127 +1 = 0x80 = 1000 0000 = -128 (wrap around from most positive to most negative) +1 = 0x81 = 1000 0001 = -127 ... 0xFE = 1111 1110 = -2 +1 = 0xFF = 1111 1111 = -1 +1 = 0x00 = 0000 0000 = 0 +1 = 0x01 = 0000 0001 = 1 ... |
57. java String[] to byte[] forums.oracle.com |
58. Sending bytes to multiple recipients forums.oracle.comI send certains bytes to different computers from a server and would like to log the status if they have successfully reached their destination, in one record. My current process is: The server sends an object DELIVERY with bytes and a unique key in it to all recipients that need those bytes. The key is the same for all people who ... |
59. bytes to kilobytes...??? forums.oracle.comcan anybody help me out how to get the result of division which is ( any integer / 1024)...?? i tried storing the result into a Float Variable.. but i'm getting an error like "inconvertible types"... actually...i need to represent the filesize in Kilobytes.. where i've the filesize in bytes... thank you... |
60. Byte allocation forums.oracle.comanirban wrote (in the other hread): If I want to see int data type allocate 32 bits or 4 bytes, then what is procedure in java? plz give me a program. It's important to realise that in Java you can't request blocks of memory or dereference addresses or do pointer arithmetic. So nothing is "allocated" in that sense. int is 32 ... |
61. Convery byte[] into a object forums.oracle.comWell, the person asked to convert it into an Object, maybe he needs it as a object to pass it through another parameter of another method. Even though byte is an extension of Object and you can use all of Object's methods, it wouldn't pass through a parameter of a method that specifies an object. |
62. Any primitive smaller than byte? forums.oracle.comAlso, It has been quite some time since I have done any programming as the last language I programmed in was ADA-84 (I think I was still using punch cards at the time :-/). My curiosity is whether or not memory management is major issue when dealing with Java. I have noticed that people tend to import entire libraries (ie javax.swing.*) ... |
63. Byte problem forums.oracle.comByte 20 is just an example which i want to work upon. Actually i am going to accept it from UI and it is nowhere in the code. And i want to store it exact 20 in the byte array as it is and not as two integers 50 and 48 which are there ASCII values. Edited by: Samir_Gurav on Dec ... |
64. bytes difference forums.oracle.comYes Sabre is right. I need to check if there is any difference in the bytes between two copies of a file and update the changes from the recent copy of a file to its old copy. adding to Wastrel's reply I tried with the link he supplied I don't find a solution in that |
65. String length in bytes forums.oracle.comThe length of a string in bytes depends on how you encode it into bytes. You could use a fixed length encoding (like ISO-8859-1) where every character is encoded by the same number of bytes, or a variable length encoding (like UTF-8). To encode a string into an array of bytes you can use [String#getBytes(String)|http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html#getBytes(java.lang.String)] After that you would have to ... |
66. bytes in a graph? forums.oracle.comJava doesn't have an official way to give the size of objects, but if an approximate size is acceptable, you could try repeatedly creating the object, watching the size of available of memory as it changes, & compute an average. (Due to continuous, asynchronous garbage collection, simply doing it once is unlikely to give even an approximately accurate result.) |
67. string decoding backslash literally in byte[] from datagram packet forums.oracle.comI think the problem is at the transmitter, not the receiver. If you are using a String literal for the file name at the transmitter you need to escape all the backslashes there. If you are not using a String literal then, as has already been suggested, you need to dump the String in hex. |
68. what number should I set for new byte[1024]; forums.oracle.comThe size of the file has nothing to do with it. It's more about how much memory you can spare. If you use transferTo() you don't even need to declare a buffer: did you look? It's a lot more efficient at copying large files than your code here. The other question of course is why do you have to copy the ... |
69. Compiling to a byte[] forums.oracle.comHello, i was just wondering if it were possible to use the JavaCompiler provided in the javax.tools package and get the class data as a byte[] instead of creating a local file, and then having to read the file. My reason for asking is because I'm using a module system in my newest application, and inside the modules, there are imports ... |
70. Create a byte from a String forums.oracle.com |
71. BufferedOutPutStream.flush() not writing all bytes to disk? forums.oracle.com |
72. byte flip operation forums.oracle.com |
73. byte[] to string and vise versa forums.oracle.comI have a byte[] and i convert it to a string. How can i get the same byte[] by converting the resulting string to byte[]? I have used the following code with no success: byte[] to string : String value = new String(data); string to byte[]: byte[] bytes= value.getBytes(); i have also used the UTF8 option: byte[] to string : String ... |
74. translate byte[] buf to Html formated site (view) forums.oracle.comPerhaps, it depends on what the HTML content contains. HTMLEditorKit is limited in its capabilities, don't expect to get the same results as in a browser. You could put the content in a JEditorPane. Set the content type of the editor pane to text/html and then use its setText() method to set the String you construct in your code snippet. Does ... |
75. Save byte[][] somewhere and read/write to it a lot? forums.oracle.comHello I need to solve mazes in Java using tree and graph search algorithms. It works all fine, except that my byte[][] containing the maze uses 3GB+ when I solve a 20,000 * 20,000 maze. I'd like to persist the maze, and read the content of a field when needed (= a lot). That would save me a lot of RAM ... |
76. Problem Sending Length in bytes forums.oracle.comYes, all the will execute when the lengthBytes is 4, otherwise not. In this case is 4, and that's the lentgh I need now. What I say is that the method I'm using is not writeing the length well. For example, if I have INT LENTGH = 80 THE METHOD SHOULD SEND buf[0]=0 buf[1]=0 buf[2]=0 buf[3]=50 BUT Actually is writing buf[0]=0 ... |
77. How to append/merger 2 byte[] ? forums.oracle.com |
78. Get class bytes? forums.oracle.comHello, I'm porting an application from C++ to Java that examines the contents of .class files, but I'm not sure what API to use to retrieve the binary representation of the class (in .class format, of course) after it's been loaded. I was hoping ClassLoader had a method similar to byte[] GetClassBytes(Class), but I found nothing of the sort. Any suggestions? ... |
79. Byte.MAX_VALUE forums.oracle.com |
80. Serial communication using byte[]! ?? forums.oracle.comThe main objective was to develop a little SIMPLE application which allows me to communicate data through a serial port to a embedded computer that we have. Setting up the serial communication part wasn't to much of a hazzle, we got the embedded thing to send data, and we are able the receive and display it. |
81. how to write the bytes out forums.oracle.com |
82. byte... x forums.oracle.com |
83. calculating bytes received forums.oracle.comI am keeping on with that code since I want to display sort of a process bar. For example if I am receiving a file of size 50 I will receive the following: 5/50 10/50 20/50 30/50 50/50 where 5, 10, 20,30, 50 are changed according to number of bytes received. A counter will keep on incrementing till all the bytes ... |
84. How to use value 255 in byte[] as arg to IndexColorModel constr. ??? forums.oracle.com |
85. BitArrays - does byte[1] always take 1 byte of RAM? forums.oracle.comDear All, I have a large array composed of elements having each a 2 bits length. I can store this array using, say, a byte array, but since the array is BIG, I would like to reduce its size even more and create a kind of bit[] class. That could be done quite easily: I would just have to map a ... |
86. javax.crypto.IllegalBlockSizeException: 6 trailing bytes forums.oracle.comHi everybody! I'm facing a error when i try to encrypt a string with symmetric algorithm DES. I try to run the following code on Redhat: byte[] data="It is a test!".getBytes(); Cipher cipher = Cipher.getInstance(algName); cipher.init(Cipher.ENCRYPT_MODE, key); int blocksize=cipher.getBlockSize(); System.out.println("--------blocksize: "+blocksize); // blocksize=8 byte[] cipherByte = cipher.doFinal(data); // 52 line The error showing is: javax.crypto.IllegalBlockSizeException: 6 trailing bytes at gnu.javax.crypto.jce.cipher.CipherAdapter.engineDoFinal(CipherAdapter.java:491) at ... |
87. padding to a byte[] forums.oracle.comActually its not difficult to padd manually, i-e applying a for loop..for example, i have a fixed byte[] as byte[]buffer = new byte[2000]; and i padd with, lets say 0's for () { // padd } But the problem is , at receiver end, when i receive the packet, how come i know that wat are the actual data bits and ... |
88. String.getBytes(Charset) put abnormal info at first 2 bytes. Bug or what? forums.oracle.com |
89. byte problem forums.oracle.com |
90. byte[] - readLine forums.oracle.comHello All, I have to upload a file in csv format with each row of 10 chars and an end of line, I'm using Apache fileUploader and get the fileData is byte[] format ...My question is how to read the data in the byte[] line by line, I'm trying to store each line in an ArrayList Help is greatly appreciated Thanks, ... |
91. SecureRandom: Negative Bytes. forums.oracle.com |
92. byte (Java) and byte (DotNet) interoperability forums.oracle.comI have the following problem. In DotNet platform I am encrypting using RijndaelManaged, from System.Security.Cryptography, which uses AES encryption method. In Java platform I use the javax.crypto.Cipher, in order to decrypt the message (in byte[] array) encrypted in DotNet platform. The problem is that in DotNet there isnt an AES encryption that uses bytes from -128 to 127. The DotNets RijndaelManaged ... |
93. byte[] within a byte[] forums.oracle.com |
94. bytes written by out.write() forums.oracle.comHi, We are reading entire conent of a file using FileInputStream at a time and writing on to a destination file using FileOutPutStream at a time using out.write(buffer,0,readbytes). After writing on to the destination the file size at source and destination are not same. some bytes are missing at the destination. We are using out.flush(), but still we are loosing some ... |
95. How an i play video data coming byte by byte over a n/w forums.oracle.comActually i have written a java program where i am receiving a video file in bytes using udp packets from a server trhough LAN. I want to play each packet as soon as it it received on the client side in its original format without storing the data on client machine. i dont want to use JMF. can i do this ... |
96. Help with writing code using Bytes forums.oracle.com |
97. java program to receive byte from serial port forums.oracle.comhello everyone, i am recently working one a project which require communication between pic16f877 and PC. My pic continuiously measure a voltage and send the result (a byte ranging from 0 to 255) to the rs232 port. One the pc side, my java program keep reading the serial port and it works for values 0~127 and 160~255. But if the byte ... |
98. How to substring by bytes forums.oracle.comHi, I need to save strings in different langauges in the DB, up to 24 bytes. How can i substring by bytes in java? for example: - is 14 bytes, but the string length is 7 hhhhhhh - is 7 bytes and the string length is 7. i would like to cut it by bytes - up to 7 bytes. ... |
99. JavaComm 2.0 - time between bytes forums.oracle.com |
100. how to take a byte's value which is created as a time_t type variable in C. forums.oracle.comHello everyone. I need help. I have a byte value ( 8 bits ). Which is created as a time_t type variable in C language. I need to get the time value. Need to see what date it contains in. But i need to do it in java. There is no time_t type in java. So anyone has any idea about ... |