Javadoc says in, out and err are 'already open', I just wonder that do they close after program finishes? If not does it contradict the practise to close any I/O stream references after use?
Are Java System.in/out/err always open?
113 Views Asked by mzoz At
2
There are 2 best solutions below
Related Questions in JAVA
- Add image to JCheckBoxMenuItem
- How to access invisible Unordered List element with Selenium WebDriver using Java
- Inheritance in Java, apparent type vs actual type
- Java catch the ball Game
- Access objects variable & method by name
- GridBagLayout is displaying JTextField and JTextArea as short, vertical lines
- Perform a task each interval
- Compound classes stored in an array are not accessible in selenium java
- How to avoid concurrent access to a resource?
- Why does processing goes slower on implementing try catch block in java?
- Redirect inside java interceptor
- Push toolbar content below statusbar
- Animation in Java on top of JPanel
- JPA - How to query with a LIKE operator in combination with an AttributeConverter
- Java Assign a Value to an array cell
Related Questions in IO
- Java listFiles in directory in jar
- C++ cin can't read in integers with 0 in them
- C++ reading a file into a struct
- What is meant by Streams w.r.t Java IO
- Blender Python Script Deleting Meshes
- C++ not reading anything from files
- Output EOF using %f
- how to write the output of iostream to buffer, python3
- Direct chart plotting Pandas DataFrame columns to Xlsxwriter in a loop
- Why is it slower to print directly to console/terminal than redirecting?
- withDefaultPrettyPrinter() doesn't make the output be formatted
- How fast can we make a specific tr?
- How to grep a string in a program?
- Why does grep give "Binary file (standard input) matches"?
- Trying to use output of one function to influence the next function to count words in text file
Related Questions in SYSTEM.OUT
- Algorithm output to length starts new line
- Why system.out.println changes reflects without building jar?
- Printing to System and to PrintWriter
- Weird behavior in Java While Loop
- How do i print this out?
- How to replace the usage of System.out or System.err by a logger?
- Issue printing array list constructed of defined classes
- arrays print out method java
- How do I display what system.out.println() shows in the console, in an Android Application's activity?
- volatile with System.out.println() in Java
- What is the value of out field in System class?
- how do I use System.out.printf?
- Time complexity of system.out.println
- Manipulate or edit System.out (java)
- Write all System.out into a file
Related Questions in SYSTEM.IN
- How does the JAVA Scanner class work internally?
- How can I redirect System.in to JavaFX TextField?
- Scanner not working in ActionListener
- Junit test of method with Scanner and System.in (Java)
- After getting user input "Scanner name = new Scanner(System.in);" how to use is in a if statement?
- Making a coinflip game using objects and methods java?
- Compiler presenting errors although Scanner is imported?
- Java use system read in switch statements
- Using an if statement with a system.in scanner
- System.in.read() returns null causing NullPointerException (cannot find cause)
- Capitalize every word using Scanner(System.in) Java
- NoSuchElement exception when using Scanner
- Separating System.Out messages and Scanner (Java)
- System.in points to JtextArea and using Scanner with it causes application to hang
- Extra value in input stream when running code outside of Intellij
Related Questions in SYSTEM.ERR
- Java 8, El Capitan: System.err.println() output not reaching Console.app
- How to log into a string? Is there a way to capture every console output into a single string?
- Difference in Processing of System.err.print and System.out.print
- Warning/Error meaning - GbaRequest - GbaRequest: Constructor Called 222 userAgent Apache-HttpClient/UNAVAILABLE
- System.err.println and System.out.println not getting in log file
- Where do messages sent to System.err go when using Tomcat externally to run a web app from IntelliJ?
- Synchronize System.out & System.err
- Race between System.out and System.err in java
- Weird behavior when using System.err.println()
- difference between System.out.println() and System.err.println()
- Are Java System.in/out/err always open?
- Does jsch session own error stream, when it is set, and no other thread can use it?
- System.out.err & System.out interleaving in Java
- Redirect the output of System.err.println to a file without code change
- Override System.out/err.println
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
stdin,stdoutandstderrare very much a Unix concept, but other operating systems (such as Windows) have copied the concept as well. These are maintained by the system, and you usually don't close them.However, you can close them, and you even have to close them when you
fork()a program, which is the Unix way to have a program detach from the command line and run in the background, such as a daemon.System.in/out/errfollow this strategy. So you could close them, but you don't have to, because they're special system resources.