You can use Files#readAllLines() to get all lines of a text file into a List<String>. for (String line : Files.readAllLines(Paths.get(“/path/to/file.txt”))) { // … } Tutorial: Basic I/O > File I/O > Reading, Writing and Creating text files You can use String#split() to split a String in parts based on a regular expression. for (String part … Read more
If you’re simply outputting text, rather than any binary data, the following will work: PrintWriter out = new PrintWriter(“filename.txt”); Then, write your String to it, just like you would to any output stream: out.println(text); You’ll need exception handling, as ever. Be sure to call out.close() when you’ve finished writing. If you are using Java 7 … Read more
To find the fastest way to read a file line by line you will have to do some benchmarking. I have done some small tests on my computer but you cannot expect that my results apply to your environment. Using StreamReader.ReadLine This is basically your method. For some reason you set the buffer size to … Read more
How to get line count of a large file cheaply in Python?
Because that’s how the POSIX standard defines a line: 3.206 Line A sequence of zero or more non- <newline> characters plus a terminating <newline> character. Therefore, lines not ending in a newline character aren’t considered actual lines. That’s why some programs have problems processing the last line of a file if it isn’t newline terminated. … Read more
EDIT: chardet seems to be unmantained but most of the answer applies. Check https://pypi.org/project/charset-normalizer/ for an alternative Correctly detecting the encoding all times is impossible. (From chardet FAQ:) However, some encodings are optimized for specific languages, and languages are not random. Some character sequences pop up all the time, while other sequences make no sense. … Read more
A lot of the answers here helped point me in the right direction, however none were suitable for me, so I am posting my solution. I have Windows 7, which comes with PowerShell built-in. Here is the script I used to find/replace all instances of text in a file: powershell -Command “(gc myFile.txt) -replace ‘foo’, … Read more
How to append text to an existing file in Java?
you should change MessageBox.Show(s[0]); to MessageBox.Show(s); the reason is that after you split, each element in textsplit is a string that contains a complete word as you expected. However, you print s[0] – the first character of the word, so only the ‘h’ was print out.
You cannot search directly through a file for a String; you must first convert to a string. Also, you are opening the file in a mode, which is write-only, so try something like this: C1 = open(“Class1.txt”,”r”) dataList = C1.readlines() data = “” for line in dataList: data += line C1.close() # do stuff with … Read more