No, you can’t. Java is rather low-level language — comparing with shell-script — so things like this must be done more explicetly. You should search for files with required mask with folder.listFiles(FilenameFilter), and iterate through returned array deleting each entry. Like this: final File folder = … final File[] files = folder.listFiles( new FilenameFilter() { …
What I don’t understand, does the annotation affect the de/serialization itself No. Its retention is ‘source’, so it’s discarded after compilation. The bytecode will contain no trace of it. It has no way to influence runtime behaviour (besides possibly compile-time code generation, which does not happen). Like @Override, it is optional and is supposed to …
Not the built-in API – but Guava does, amongst its other treasures. (It’s a fabulous library.) String content = Files.toString(new File(“file.txt”), Charsets.UTF_8); There are similar methods for reading any Readable, or loading the entire contents of a binary file as a byte array, or reading a file into a list of strings, etc. Note that …
Does it make sense to always wrap an InputStream as BufferedInputStream, when I know whether the given InputStream is something other than buffered? No. It makes sense if you are likely to perform lots of small reads (one byte or a few bytes at a time), or if you want to use some of the …
When possible, you should not store the entire contents of a file to be served in memory. Instead, aquire an InputStream for the data, and copy the data to the Servlet OutputStream in pieces. For example: ServletOutputStream out = response.getOutputStream(); InputStream in = [ code to get source input stream ]; String mimeType = [ …
BufferedReader Since Java 1.1 Throws checked exceptions Can read single chars, char arrays, and lines Fast Scanner Since Java 1.5 Throws unchecked exceptions Can read lines, numbers, whitespace-delimited tokens, regex-delimited tokens Difficult to read single characters Console Since Java 1.6 Throws unchecked exceptions Not always available (e.g. if input/output is redirected, and in Eclipse) Can …
The underlying data source for some implementations of InputStream can signal that the end of the stream has been reached, and no more data will be sent. Until this signal is received, read operations on such a stream can block. For example, an InputStream from a Socket socket will block, rather than returning EOF, until …
You want to call the method without any OpenOption arguments. Files.write(path, content.getBytes()); From the Javadoc: The options parameter specifies how the the file is created or opened. If no options are present then this method works as if the CREATE, TRUNCATE_EXISTING, and WRITE options are present. In other words, it opens the file for writing, …
BufferedWriter is more efficient if you have multiple writes between flush/close the writes are small compared with the buffer size. In your example, you have only one write, so the BufferedWriter just add overhead you don’t need. so does that mean the first example writes the characters one by one and the second first buffers …
I’ve searched all over the web and after reading lot of docs regarding connection timeout exception, the thing I understood is that, preventing SocketTimeoutException is beyond our limit. One way to effectively handle it is to define a connection timeout and later handle it by using a try-catch block. Hope this will help anyone in …