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1. Top results related to how does a properly encoded torrent file work in java

   • How does a=a++ work in java

     Top Answer

     Answered May 01, 2013 · 14 votes

     a = a++;-

     starts with incrementing a, and then reverting a to the old value as a++ returns the not incremented value.

     In short it does nothing in Java. If you want to increment, use only the postfix operator like this :

     a++;-

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     1/5

   • How does File.exists() work in JAVA?

     Top Answer

     Answered Nov 22, 2015 · 2 votes

     SourceCode

     public boolean exists() { SecurityManager security = System.getSecurityManager(); if (security != null) { security.checkRead(path); } return ((fs.getBooleanAttributes(this) & FileSystem.BA_EXISTS) != 0); }

     If you look closely all it does is check permissions by calling the filesystem fs and of course the existing bit :)

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     2/5

   • How does a three tiered system work in Java?

     Top Answer

     Answered May 31, 2011 · 11 votes

     Here's the basic idea, which can actually be derived more or less from first principles, ie, Parnas's rule that modules should conceal one secret:

     • the "front end" tier holds the secrets of making a visible presentation
     • the "middle tier" holds the secrets of managing the behavior of the system
     • the "back end" holds the secrets of how data is held persistently.

     In a Java based system, this means

     Front end

     There is a web server and the presentation is constructed with HTML, CSS, and Javascript. There are several technologies for this, but the most Java-centered one is Java Server Pages, which effectively generate HTML from a script with embedded Java. One well-known way to manage JSPs on a higher level is called Struts.

     There are a number of tools to simplify this; perhaps the most common is Spring. (Spring provides some other things that are more applicable to the middle tier as well.)

     The other option, which is very uncommon nowadays, is to have a Java application front end that runs on the client's machine.

     Middle Tier

     The middle tier is there to provide the data in a useable form for the front end. In the Java world, this is often done with an "application server" which presents "objects" to the front end. The really hard-core solution to this is called Enterprise Java Beans (EJBs) but that turned out to be too complex for any but the biggest systems; it's now more often done with a persistence layer like Hibernate, that provides Java Data Access Objects to the rest of the middle tier. (To learn more about this, you want to look into what's called the "impedance mismatch problem for objects and relation databases.")

     Back End

     The usual back end in a 3-tier system is an off-the-shelf data base, although it could conceivably be anything from Hadoop and BigTable to something that uses Java serialization to store state as text files. The back end is responsible for keeping that state so it persists and can be found again. Tools like Hibernate exist essentially exist to provide a clearer, more general interface to a data base, but Java has had the JDBC interface from the first (well,nearly the first, Java 1.1) to make databases useable.

     n tier Systems

     In large scale systems, this subdivision can be broken down further. For example, the "front end" can be seen as two layers: a presentation layer in the browser and a presentation support layer in the server. In that kind of breakdown, the server side might, for example, manage sessions and authentication. Similarly, you can look at the interface between middle tier and back end as a layer in itself, an "impedance matching layer". Now, Hibernate gets its own layer.

     On the other hand, it's not uncommon for systems to have a presentation layer generatng HTML or implemented as a Java client application talking to a data base back end directly, In that case, you have a "two tier system".

     Java is not the reason

     The last thing to note here is that Java isn't the reason or the basis for having 2, 3, or 5 (or more -- is the browser itself a tier?) tiers. It's instead an architectural decision made because you want to tie parts that are likely to change together into the same components. In real life, the business is fairly stable; once you've converged on a domain model, it doesn't change much. When the presentation changes, the domain model often won't -- so separate that into a presentation layer. On the other hand, you may choose a different database implementation without changing either the business model (domain moel) or the presentation -- so make that a separate tier. This leads to a more robust system, because a change doesn't then mean code breaks throughout the system.

     This desired robustness is the reason for a multi-tier system.

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     3/5

   • How does a boolean data type work internally in Java?

     Top Answer

     Answered Jun 20, 2020 · 7 votes

     The Java Virtual Machine Specification states in section 2.3.4:

     Although the Java Virtual Machine defines a boolean type, it only provides very limited support for it. There are no Java Virtual Machine instructions solely dedicated to operations on boolean values. Instead, expressions in the Java programming language that operate on boolean values are compiled to use values of the Java Virtual Machine int data type.

     . . .

     The Java Virtual Machine encodes boolean array components using 1 to represent true and 0 to represent false. Where Java programming language boolean values are mapped by compilers to values of Java Virtual Machine type int, the compilers must use the same encoding.

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     4/5

   • How does A.super.foo() work in defender methods (Java 8)?

     Top Answer

     Answered Jul 09, 2014 · 1 votes

     The syntax A.super.foo() seems to be similar to A.this, a qualified reference. Since defender methods gives you a sort of multiple inheritance, super becomes ambigious and you need to qualify it with A.super.

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     5/5

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2. stackoverflow.com › questions › 78529715java - Getting undefined characters in pieces section when ...

   stackoverflow.com › questions › 78529715

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   3 days ago · Through various implementations on the net I have implemented a Bendcode parser and am trying to find the info hash of any input .torrent file. But due to some problem my parser gives correct outpu...

3. www.baeldung.com › java-url-encoding-decodingGuide to Java URL Encoding/Decoding | Baeldung

   www.baeldung.com › java-url-encoding-decoding

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   May 11, 2024 · Simply put, URL encoding translates special characters from the URL to a representation that adheres to the spec and can be correctly understood and interpreted. In this tutorial, we’ll focus on how to encode/decode the URL or form data so that it adheres to the spec and transmits over the network correctly. 2.

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5. devcodef1.com › news › 1269333Undefined Characters in Torrent File: Parsing Issues with ...

   devcodef1.com › news › 1269333

   • Cached

   3 days ago · The Problem with Undefined Characters. Undefined characters in torrent files can cause issues when parsing them, leading to errors or incomplete downloads. These undefined characters can appear due to various reasons, such as encoding issues, manual errors, or bugs in the software used to create the torrent file.

6. stackoverflow.com › questions › 78445309Read with Java a file that contains text encoded as UTF-8 ...

   stackoverflow.com › questions › 78445309

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   May 7, 2024 · Using getBytes() and String(bytes, charset) does not work, they retrieve the same text without changes: byte[] bytes = full_text.getBytes("UTF-8"); String decoded = new String(bytes, "UTF-8"); System.out.println(decoded); // For example purposes

7. People also ask

   What is URL encoding?

   • Simply put, URL encoding translates special characters from the URL to a representation that adheres to the spec and can be correctly understood and interpreted. In this tutorial, we’ll focus on how to encode/decode the URL or form data so that it adheres to the spec and transmits over the network correctly. 2. Analyze the URL

   Guide to Java URL Encoding/Decoding | Baeldung

   www.baeldung.com/java-url-encoding-decoding

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   Can a property file be encoded outside of ISO 8859-1 (Latin-1)?

   • Properties and Encoding By default, properties files are expected to be ISO-8859-1 (Latin-1) encoded, so properties with characters outside of the ISO-8859-1 shouldn’t generally be used. We can work around this limitation with the help of tools, such as the JDK native2ascii tool or explicit encodings on files, if necessary.

   Getting Started with Java Properties | Baeldung

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   How to encrypt and decrypt files in Java?

   • Use CipherInputStream and CipherOutputStream classes to encrypt and decrypt files in Java. Read more → Learn to create 3DES keys and use them for encrypting and decrypting Strings and files in Java

   Java AES Encryption and Decryption | Baeldung

   www.baeldung.com/java-aes-encryption-decryption

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   How to encode a string?

   • assertThat(testUrl, is(encodedURL)); The encode method accepts two parameters: This encode method converts the string into application/x-www-form-urlencoded format. The encoding scheme will convert special characters into two digits hexadecimal representation of eight bits that will be represented in the form of “ %xy “.

   Guide to Java URL Encoding/Decoding | Baeldung

   www.baeldung.com/java-url-encoding-decoding

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8. www.reddit.com › 1czqv82 › file_type_or_its_encodingFile type or its encoding : r/techsupport - Reddit

   www.reddit.com › 1czqv82 › file_type_or_its_encoding

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   Welcome to the unofficial ComfyUI subreddit. Please share your tips, tricks, and workflows for using this software to create your AI art. Please keep posted images SFW.

9. www.baeldung.com › java-aes-encryption-decryptionJava AES Encryption and Decryption | Baeldung

   www.baeldung.com › java-aes-encryption-decryption

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   May 11, 2024 · In this article, we learned how to encrypt and decrypt input data like strings, files, objects, and password-based data using the AES algorithm in Java. Additionally, we discussed the AES variations and the size of data after encryption.

10. www.baeldung.com › java-propertiesGetting Started with Java Properties | Baeldung

    www.baeldung.com › java-properties

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    May 11, 2024 · By default, properties files are expected to be ISO-8859-1 (Latin-1) encoded, so properties with characters outside of the ISO-8859-1 shouldn’t generally be used. We can work around this limitation with the help of tools, such as the JDK native2ascii tool or explicit encodings on files, if necessary.