filefilter

问题 Im making a desktop application and it has a JFileChooser(ShowSaveDialog) function.. When I tried to save a sample text file the program didnt get the extension file that I chose.. I'm trying to use the if else or switch statement and I cant figure it out what command will I use to get the string/Int value for the condition if pdf,word or txt extension is chosen as file extension... public class Save { static boolean flag = false; public static void main(String[] args) throws IOException,

问题 I have this file types Filters: public const string Png = "PNG Portable Network Graphics (*.png)|" + "*.png"; public const string Jpg = "JPEG File Interchange Format (*.jpg *.jpeg *jfif)|" + "*.jpg;*.jpeg;*.jfif"; public const string Bmp = "BMP Windows Bitmap (*.bmp)|" + "*.bmp"; public const string Tif = "TIF Tagged Imaged File Format (*.tif *.tiff)|" + "*.tif;*.tiff"; public const string Gif = "GIF Graphics Interchange Format (*.gif)|" + "*.gif"; public const string AllImages = "Image file|

问题 I have a program utilizing a JFileChooser. To be brief, the full program is a GUI which allows users to manipulate PNGs and JPGs. I would like to make it so that the JFileChooser instantly opens to the picture directory (windows). When the user opens their JFileChooser, it would open directly to the pictures library C:\Users\(USER)\Pictures Furthermore, it would be nice to ONLY show files of a specific type (PNGs and JPGs). Many programs seem to be able to do this; only allowing selection of

问题 I know I can make a filter by file type, but is it possible to filter by file size? For example a JFileChooser to show only pictures within 3 MegaBytes. 回答1: The short answer should be, what have you tried? The long answer is yes... JFileChooser fc = new JFileChooser(); fc.addChoosableFileFilter(new FileFilter() { @Override public boolean accept(File f) { String name = f.getName().toLowerCase(); return (name.endsWith(".png") && name.endsWith(".jpg") && name.endsWith(".gif") && name.endsWith("

问题 I know I can make a filter by file type, but is it possible to filter by file size? For example a JFileChooser to show only pictures within 3 MegaBytes. 回答1: The short answer should be, what have you tried? The long answer is yes... JFileChooser fc = new JFileChooser(); fc.addChoosableFileFilter(new FileFilter() { @Override public boolean accept(File f) { String name = f.getName().toLowerCase(); return (name.endsWith(".png") && name.endsWith(".jpg") && name.endsWith(".gif") && name.endsWith("

问题 I have a method in my application called "Save as" which Saves the image of my application on computer my into a file. I used the JFileChooser to let the users choose their desired location for saving the file. The problem is unless user explicitly types in the file format, it saves the file with no extension. How can I have formats like jpg, png in the File Type drop down menu. and, how can i get extension from the File Type drop menu for saving my image file. ImageIO.write(image,extension

问题 <input type='file' name='userFile'> now when i will click the browse button, the browse dialog will show all files... what if i want to filter file types lets say only images or .png & .jpg & .gifs only office file like .doc & .docx & .pps how to do it... 回答1: There is an "accept" attribute on file input controls, where you can specify the types of files you want. From what i'm seeing, though, many browsers like to ignore it -- the file types that can be specified are MIME types, so a

问题 I have to replace JFileChooser with FileDialog. I could not Filter out the file. Following is the code. The filter is also not visible on the Save FileDialog and also user is able to save the file file with different ext. The environment is windows 10 public class ABCDialog extends JDialog { private String fileName = StringUtils.Empty; public ABCDialog (Frame frame,String title) { super(frame, title); ..... } public String getFileName () { return fileName; } private String setFileName () {

问题 I want to export a PPT presentation to an .html file. Therefore I have the VBA code Sub HTMLExport() ActivePresentation.SaveAs "C\Users\test\pptInHtml.htm", ppSaveAsHTML, msoFalse End Sub This works, but I need the code for a "Save As Dialog Box", where the user can choose the path where the file will be saved as html (the user can only pick "save as html", nothing else). This is the code for my SaveAsDialog Sub ShowSaveAsDialog() Dim dlgSaveAs As FileDialog Set dlgSaveAs = Application

问题 I have a file that contains many logs : Ps: the question is inspired from a previous question here. but slightly improved. at 10:00 carl 1 STR0 STR1 STR2 STR3 <STR4 STR5> [STR6 STR7] STR8: academy/course1:oftheory:SMTGHO:nothing: academy/course1:ofapplicaton:SMTGHP:onehour: at 10:00 carl 2 STR0 STR1 STR2 STR3 <STR4 STR78> [STR6 STR111] STR8: academy/course2:oftheory:SMTGHM:math: academy/course2:ofapplicaton:SMTGHN:twohour: at 10:00 david 1 STR0 STR1 STR2 STR3 <STR4 STR758> [STR6 STR155] STR8: