I am reading the source code of Java I/O lib and noticed that FilterStream extends the abstract class InputStream favouring inheritance and also has a InputStream as an instance variable favoring composition.Why do we need a IS-A and a HAS-A relationship at the same time with InputStream ?
FilterInputStream IS-A InputStream and HAS-A InputStream
263 Views Asked by Debapriya Biswas At
1
There are 1 best solutions below
Related Questions in JAVA
- I need the BIRT.war that is compatible with Java 17 and Tomcat 10
- Creating global Class holder
- No method found for class java.lang.String in Kafka
- Issue edit a jtable with a pictures
- getting error when trying to launch kotlin jar file that use supabase "java.lang.NoClassDefFoundError"
- Does the && (logical AND) operator have a higher precedence than || (logical OR) operator in Java?
- Mixed color rendering in a JTable
- HTTPS configuration in Spring Boot, server returning timeout
- How to use Layout to create textfields which dont increase in size?
- Function for making the code wait in javafx
- How to create beans of the same class for multiple template parameters in Spring
- How could you print a specific String from an array with the values of an array from a double array on the same line, using iteration to print all?
- org.telegram.telegrambots.meta.exceptions.TelegramApiException: Bot token and username can't be empty
- Accessing Secret Variables in Classic Pipelines through Java app in Azure DevOps
- Postgres && statement Error in Mybatis Mapper?
Related Questions in LIBRARIES
- How to install spdlog library?
- How do I add the Luxon library google sheet script
- Installing Eigen to use in VS Code
- "Unable to generate SAFESEH image." but disabling SAFESEH breaks dependency links
- How To Create 1 SBOM File For Android Multi Module Project
- How to directly call static methods in classes in libraries in Google AppsScript
- Using FastLED and SharpIR Libraries with Generic ESP8266 Board
- How C ++ header files hold the cpp respective file definitions if they do not include them on themselves?
- Is there a fundamental reason why only one library can be exposed from a package?
- How can I use a C# NuGet library in a C++ project?
- Error including sysc directory using SystemC and Cmake Linux
- Understanding how to make a library recognise that I have the needed dependencies
- Making animated text in linux terminal
- Python 3.x and Davinci Resolve
- Problem importing Junit in Eclipse(SpringToolSuite4)
Related Questions in JAVA-IO
- Mocking Stream or Reader in Java Junit
- Cant find image file - java
- What directory do objects of the File() class look in?
- Not able to figure out why the following code is getting deadlocked
- java.io.FileNotFounfException:/images/captured.jpg: open failed:ENOENT
- Create CSV file without saving it to disk
- no suitable HttpMessageConverter found for response type [class java.io.InputStream] and content type [text/csv]
- ObjectInputStream constructor gives StreamCorruptedException: invalid stream header: EFBFBDEF
- Out of memory error java heap space using IOUtils.copyLarge . How can I fix this?
- Creating a file object only works when I use an absolute path
- When using a Java Scanner, is there ever a need to wrap the InputStream argument into an InputStreamReader? And then into a BufferedReader?
- how to solve the error below on android studio
- FileNotFoundException when trying to pass txt file as parameter for method in Java
- Code from target folder in java spring-boot
- java.io.UncheckedIOException / java.nio.file.AccessDeniedException mention different charsets when reading files in a directory
Related Questions in FILTER-INPUT
- Warning: filter_input(): First argument is expected to be a valid callback in
- FilterInputStream IS-A InputStream and HAS-A InputStream
- php filter_input parse error inside class
- PHP filter_input() function not working with CI controller
- How do I check if a text variable is null, false, or less than 0?
- How will i use php $_GET for serving file safely?
- PHP - How to check if an input filter is valid?
- filter_input(INPUT_SERVER,'DOCUMENT_ROOT'); returns null
- PHP Error- filter_input() expects parameter 3 to be integer, string given
- FILTER_SANITIZE vs FILTER VALIDATE, whats the difference - and which to use?
- What happens when you filter input in PDO prepared statement and the STR is in the form of an interger?
- PHP filter_require_array is failing
- Difference between filter_input and direct acces on $_POST after objective ajax request
- PHP - Using filter_input, isset and other
- Is there a way to simplify this function by using say filter_input
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 # Hahtags
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?
FilterInputStream"is an" input stream that adds or modifies the behavior of an existing input stream that you need to pass in. For example, its subclassBufferedInputStreamadds a buffering capability. SinceFilterInputStreamneeds to hold on to the stream you pass in, there is also a "has a" relationship.FilterInputStreamis an example of the decorator pattern: https://en.wikipedia.org/wiki/Decorator_pattern