io Archives - Page 3 of 4

How do I get the file extension of a file in Java?

Just to be clear, I’m not looking for the MIME type. Let’s say I have the following input: /path/to/file/foo.txt I’d like a way ...

May 1, 2022
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A non-blocking read on a subprocess.PIPE in Python

I’m using the subprocess module to start a subprocess and connect to its output stream (standard output). I want to be able to ...

May 1, 2022
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How to use StringIO in Python3?

I am using Python 3.2.1 and I can’t import the StringIO module. I use io.StringIO and it works, but I can’t use it ...

April 30, 2022
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Calculate the execution time of a method

Possible Duplicate: How do I measure how long a function is running? I have an I/O time-taking method which copies data from a ...

April 29, 2022
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Get an OutputStream into a String

What’s the best way to pipe the output from an java.io.OutputStream to a String in Java? Say I have the method: writeToStream(Object o, ...

April 29, 2022
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How to append text to an existing file in Java?

I need to append text repeatedly to an existing file in Java. How do I do that? 3Best Answer 31

April 25, 2022
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How to read all files in a folder from Java?

Want to improve this post? Provide detailed answers to this question, including citations and an explanation of why your answer is correct. s ...

April 23, 2022
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Scanner is skipping nextLine() after using next() or nextFoo()?

I am using the Scanner methods nextInt() and nextLine() for reading input. It looks like this: System.out.println("Enter numerical value"); int option; option = ...

April 19, 2022
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How do I check if a file exists in Java?

How can I check whether a file exists, before opening it for reading in Java (the equivalent of Perl’s -e $filename)? The only ...

April 17, 2022
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How can I read a large text file line by line using Java?

I need to read a large text file of around 5-6 GB line by line using Java. How can I do this quickly? ...

April 16, 2022
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