How do you keep track of a file and then write to it using Java?
148284
Set a variable to equal the File instancee you obtained when you used a JFilechooser to open the file.  Rather than using a JFileChooser to do the save, just use the variable you set earlier to determine where to save.  Note that for purposes of external GUI consistency, such a save should be called "save", not "save as".
430374
You can't extend a file with mmap().  You can map\nmemory that you might write into, but when you close\nor fsync the file, it will NOT be extended.\n\nThe historical way to do this is to lseek to the position\nyou want and write a single byte.  The filesystem will\narrange that the intervening bytes will look like zeros.\n\nI've modified your program snippet to open a file,\nmmap it, and scribble in a bunch of bytes -- while\npreserving whatever is there.  It's not particularly\nclever, but it should show most of the details you're\nlooking for.  You can contact me through YA if you\nhave questions.\n\n#include <sys/types.h>\n#include <sys/stat.h>\n#include <fcntl.h>\n#include <sys/stat.h>\n#include <unistd.h>\n#include <sys/mman.h>\n#include <stdio.h>\n#include <string.h>\n#include <stdlib.h>\n\nint\nmain(int argc, char* argv[])\n{\n  int shfd;\n  struct stat statbuff;\n  char *filename = argc>1 ? argv[1]     : "testfile";\n  int   mmapsize = argc>2 ? atoi(argv[2]) : 100000;\n  char *mem;\n\n  /* open the file */\n  if ((shfd = open(filename, O_CREAT | O_RDWR, 0677)) < 0)\n    perror("open failed"), exit(-1);\n\n  /* if it is too small, we will extend the file for the mmap */\n  if (fstat(shfd, &statbuff) != 0)\n    perror("stat"), exit(-1);\n  if (statbuff.st_size < mmapsize) {\n    if (lseek(shfd, mmapsize-1, SEEK_SET) == (off_t)-1)\n      perror("lseek"), exit(-1);\n    if (write(shfd, "&#92;0", 1) < 0)\n      perror("write"), exit(-1);\n  }\n\n  /* map a portion of the file to buffer in memory */\n  if ((mem = mmap(0, mmapsize, PROT_READ | PROT_WRITE, MAP_SHARED, shfd, 0)) == MAP_FAILED)\n    perror("mmap failed"), exit(-1);\n\n  /* scribble on the file *after* whatever was already there */\n  if (statbuff.st_size < mmapsize)\n    memset(mem+statbuff.st_size, 'X', mmapsize-statbuff.st_size);\n\n  if (close(shfd) < 0)\n    perror("close"), exit(-1);\n\n  return 0;\n}
610516
First you will need to create a reference to that folder.\n\nFile directory=new File("name");\n\nthen use  the listFiles() method of file to get a list of files in that folder. This will include folders too.So when printing you may want to check whether it is Folder by isDirectory() method.\n\nFile[] list=directory.listFiles();\n\nfor(File member: list)\n{\nif(!member.isDirectory)\nSystem.out.println(member);\n}\n\n\nyou will need to import java.io
34930
I dont know how you do in gui\njust go to command prompt\n type\ndir yourdirname > afilename.txt\n\nnow print the file
901126
Best bet is to use \n\nbc filename >outfile\n\nIt won't give you exactly what you want but will be close
702462
I would have to see the code.\n\nMove the fopen before the while and the fprintf before the curly braces.  Leave the fclose after the curly braces.\n\nFopen\nwhile {\n\nfprintf ;\n}\nfclose
178015
It's been a while since I did anything in Java but I'm fairly certain it's just this:\n\nfile.add(new MenuItem("Print"));\nfile.add(new MenuItem("-"));\nfile.add(new MenuItem("Exit"));\n\n..give it a shot.
47547
Go to the Dos prompt. There is a program called sort.\n\nSort [unsorted file name] > [sorted file name]\n\nIf you want to concatenate all your files together first, that's a bit more tricky:\n\nCopy [file name 1] ABC.Txt\nType [file name 2] >> ABC.Txt\nType [file name 3] >> ABC.Txt\n.\n.\nSort ABC.Txt > ABC.Srt
860542
Use File IO functions in PHP:\n\nBasically se script like:\n\n$fp = fopen('file.txt', 'w+'); //this overwrites existing file if any\n\nfwrite($fp, $fname); //write data to file, next data on same line\nfwrite($fp, $lname); //next data on same line\nfwrite($fp, "$lname&#92;n"); //this makes sure next data written on new line\n.\n.\n.\nfwrite($fp, $msg);\n\nfclose($fp); //make sure you always close file\n\nI have not implemented ay error handling here for simplicity.\n\nImportant note: In order for a file to be accessed or created, the directory and/or file in question must have the appropriate permissions. Also note that access must be granted to the user under which the PHP script will be executed (usually the same username as the web server).
193686
send it to a folder of your choice
803364
Try opening the file in "append" mode instead of "write" mode, like:\n\nfp = fopen("MyFile.txt","a");  /* use "a" instead of "w" */
163668
I would suggest using a plain text editor, such as notepad (win), textedit (mac), or an open-source plain text editor.
1082403
Try to copy and paste from Edit, middle of File and View!\n\nLook up on left corner!\n\nDon't forget bout my points!
139916
Some applications simply store their usernames as plain text in the header of their data files.  Try opening a few of the data files in notepad, and scan the first few lines to see if anything stands out.\n\nOtherwise, if there's a way to create a new file there's an old trick I learned awhile ago for other applications.\n\n1.  Create a new file, but don't set the userid/password.\n2.  Copy the new file/files to another folder.\n3.  Set the username/password.\n4.  Compare the original files with the copies.  The date/time should tell you which files changed when the username/password was set.  Comparing the "changed" files' content should tell you where the files changed which may indicate where the userid/password is stored.
1035468
I could, but you are going to have to be more specific.  What kind of files?  Most of the time you can copy/paste.
598093
There really isn't anything that I know of that u can do in java, but try not having the scripts embedded. It sounds like the computer can't handle so much info.
964542
save work/folders on a disk