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1. Top results related to define exception in java programming meaning list

   • Exception in Connection time out for HttpURLConnection in Java programming

     Top Answer

     Answered May 23, 2017 · 0 votes

     You are correct. It is a proxy issue. Configure you proxy using the solution given here: I am trying to get location information from ip address in JAVA but I am getting a java.net.SocketException: Connection reset error

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     1/5

   • Exception Driven Programming in Java

     Top Answer

     Answered Feb 20, 2012 · 1 votes

     This is an old question but I don't see an accepted answer so...

     I'm pleased to announce v3.0 of LogDigger Connector library that:

     • In case of an error, collects request-level data and logs.
     • Can use memory or JDBC for storage.
     • Has a built-in web interface (similar to ELMAH).
     • Can send notifications via email, you can collect them using RSS or implement your own mechanism.
     • Can track user actions and have the recent usage history included with the error report.
     • Is quite lightweight (500KB) an has no external dependencies (except JDBC driver obviously and JavaMail API if you want to send email).

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     2/5

   • Exception in thread "main" java.net.ConnectException: Connection refused:thread in Socket Programming Java

     Top Answer

     Answered Dec 16, 2021 · 0 votes

     The problem is that the listening server was not configured correctly, And when you push the button, The error is thrown. the possible problem is that because the ServerSocket IP address was not configured explicitly then it gets your machine IP address something that your router assigned to your machine. I believe to fix this problem, you should set the IP address of the listening server explicitly. see HERE

     ServerSocket(int port, int backlog, InetAddress bindAddr)Create a server with the specified port, listen backlog, and local IP address to bind to.

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     3/5

   • Exception in thread "main" java.net.ConnectException: Connection refused: connect Socket Programming Java

     Top Answer

     Answered Nov 01, 2016 · 7 votes

     There are 2 issues in your program:

     • You use the port 80 which is part of the well-known ports or system ports (0 to 1023), so you need to launch your server with the admin rights or change it for 8080 for example.
     • You forgot to call bw.newLine() after each bw.write(sendMessage) such that it waits for ever since on the other side you call br.readLine() which means that it waits for an entire line while you don't send the end of line characters.

     Change your code for this:

     Server part:

     public class serverpart { public static Socket socket; public static void main(String[]args) throws IOException { int port = 8080; ... BufferedWriter bw = new BufferedWriter(osw); bw.write(returnedMessage); bw.newLine(); ...

     Output:

     Server start at port 8080.AcceptedMessage sent from client: net3202Message replied to client: Correct!

     Client part:

     public class clientpart { public static void main(String[]args) throws IOException { Scanner input = new Scanner(System.in); int port = 8080; ... bw.write(sendMessage); bw.newLine(); bw.flush(); ...

     Output:

     Please answered the following question: What is the subject code for Socket Programming?net3202Message sent to server: net3202Message received from server : Correct!

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     4/5

   • Define a fixed-size list in Java

     Top Answer

     Answered Aug 11, 2022 · 25 votes

     Yes,

     The Apache Commons library provides the FixedSizeList

     class which does not support the add, remove and clear methods (but the set method is allowed because it does not modify the List's size). Ditto for FixedSizeList

     in Eclipse Collections. If you try to call one of these methods, your list remains the same size.

     To create your fixed size list, just call

     List<YourType> fixed = FixedSizeList.decorate(Arrays.asList(new YourType[100]));-

     You can use unmodifiableList

     if you want an unmodifiable view of the specified list, or read-only access to internal lists.

     List<YourType> unmodifiable = java.util.Collections.unmodifiableList(internalList);-

     Other Answers

     Answered Mar 05, 2011 · 64 votes

     This should do it if memory serves:

     List<MyType> fixed = Arrays.asList(new MyType[100]);-

     Other Answers

     Answered Apr 09, 2020 · 36 votes

     A Java list is a collection of objects ... the elements of a list. The size of the list is the number of elements in that list. If you want that size to be fixed, that means that you cannot either add or remove elements, because adding or removing elements would violate your "fixed size" constraint.

     The simplest way to implement a "fixed sized" list (if that is really what you want!) is to put the elements into an array and then Arrays.asList(array) to create the list wrapper. The wrapper will allow you to do operations like get and set, but the add and remove operations will throw exceptions.

     And if you want to create a fixed-sized wrapper for an existing list, then you could use the Apache commons FixedSizeList

     class. But note that this wrapper can't stop something else changing the size of the original list, and if that happens the wrapped list will presumably reflect those changes.

     On the other hand, if you really want a list type with a fixed limit (or limits) on its size, then you'll need to create your own List class to implement this. For example, you could create a wrapper class that implements the relevant checks in the various add / addAll and remove / removeAll / retainAll operations. (And in the iterator remove methods if they are supported.)

     So why doesn't the Java Collections framework implement these? Here's why I think so:

     • Use-cases that need this are rare.
     • The use-cases where this is needed, there are different requirements on what to do when an operation tries to break the limits; e.g. throw exception, ignore operation, discard some other element to make space.
     • ["A list implementation with limits could be problematic for helper methods; e.g. Collections.sort ","."]

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2. docs.oracle.com › exceptions › definitionWhat Is an Exception? (The Java™ Tutorials > Essential Java ...

   docs.oracle.com › exceptions › definition

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   Definition: An exception is an event, which occurs during the execution of a program, that disrupts the normal flow of the program's instructions. When an error occurs within a method, the method creates an object and hands it off to the runtime system.

   • Advantages of Exceptions

     The Java Tutorials have been written for JDK 8. Examples and...

   • Catching and Handling Exceptions

     This section describes how to use the three exception...

   • The Try Block

     The segment in the example labeled code contains one or more...

   • The Catch Or Specify Requirement

     Valid Java programming language code must honor the Catch or...

   • How to Throw Exceptions

     Exception Class. Most programs throw and catch objects that...

   • Unchecked Exceptions — The Controversy

     Because the Java programming language does not require...

   • Putting It All Together

     As mentioned previously, this method's try block has three...

   • Specifying The Exceptions Thrown by a Method

     To specify that writeList can throw two exceptions, add a...

3. www.geeksforgeeks.org › exceptions-in-javaExceptions in Java - GeeksforGeeks

   www.geeksforgeeks.org › exceptions-in-java

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   • What Are Java Exceptions?
   • Types of Exceptions
   • How Does JVM Handle An Exception?
   • How Programmer Handle An Exception?

   In Java, Exceptionis an unwanted or unexpected event, which occurs during the execution of a program, i.e. at run time, that disrupts the normal flow of the program’s instructions. Exceptions can be caught and handled by the program. When an exception occurs within a method, it creates an object. This object is called the exception object. It conta...

   See full list on geeksforgeeks.org

   Java defines several types of exceptions that relate to its various class libraries. Java also allows users to define their own exceptions. Exceptions can be categorized in two ways: 1. Built-in Exceptions 1.1. Checked Exception 1.2. Unchecked Exception 2. User-Defined Exceptions Let us discuss the above-defined listed exception that is as follows:

   See full list on geeksforgeeks.org

   Default Exception Handling: Whenever inside a method, if an exception has occurred, the method creates an Object known as an Exception Object and hands it off to the run-time system(JVM). The exception object contains the name and description of the exception and the current state of the program where the exception has occurred. Creating the Except...

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   Customized Exception Handling: Java exception handling is managed via five keywords: try, catch, throw, throws, and finally. Briefly, here is how they work. Program statements that you think can raise exceptions are contained within a try block. If an exception occurs within the try block, it is thrown. Your code can catch this exception (using cat...

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4. docs.oracle.com › javase › tutorialLesson: Exceptions (The Java™ Tutorials > Essential Java Classes)

   docs.oracle.com › javase › tutorial

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   The Java programming language uses exceptions to handle errors and other exceptional events. This lesson describes when and how to use exceptions. What Is an Exception? An exception is an event that occurs during the execution of a program that disrupts the normal flow of instructions. The Catch or Specify Requirement.

5. www.javatpoint.com › exception-handling-in-javaException Handling in Java | Java Exceptions - javatpoint

   www.javatpoint.com › exception-handling-in-java

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   The Exception Handling in Java is one of the powerful mechanism to handle the runtime errors so that the normal flow of the application can be maintained. In this tutorial, we will learn about Java exceptions, it's types, and the difference between checked and unchecked exceptions.

6. stackoverflow.com › questions › 2802358What is an exception in java? - Stack Overflow

   stackoverflow.com › questions › 2802358

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   Mar 6, 2017 · An exception is a recoverable error within your application. It's relative to what you're doing and what the user expects. Let's say you have a divide by 0 exception, and your application is an calculator. Most users would expect that a message would pop up explaining that they divided by 0.

   • A signal that something failed in the code, but which is programmatically recoverable. Depends on how you interprets "error". This is ambiguous....
   • You can start here: http://java.sun.com/docs/books/tutorial/essential/exceptions/.
   • What is java exception? It is a class used to identify unexpected behavior in your application. Is an exception considered an error? No always (...
   • By the way, you can also create your own Exceptions... for example:
   • A Java exception is a mechanism for interrupting the normal program flow, usually -- though not necessarily -- when there is an error that prevents...
   • Exception subclasses represent errors that a program can reasonably recover from. Except for RuntimeException and its subclasses (see below), they...
   • 1- An exception is an event, which occurs during the execution of a program, that disrupts the normal flow of the program's instructions. 2- An Er...

7. dev.java › learn › exceptionsWhat Is an Exception? - Dev.java

   dev.java › learn › exceptions

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   Definition: An exception is an event, which occurs during the execution of a program, that disrupts the normal flow of the program's instructions. When an error occurs within a method, the method creates an object and hands it off to the runtime system.

8. People also ask

   What is an exception in Java?

   • The term exception is shorthand for the phrase "exceptional event." Definition: An exception is an event, which occurs during the execution of a program, that disrupts the normal flow of the program's instructions. When an error occurs within a method, the method creates an object and hands it off to the runtime system.

   What Is an Exception? (The Java™ Tutorials > Essential Java Classes

   docs.oracle.com/javase/tutorial/essential/exceptions/definition.html

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   What is the difference between exception and exception?

   • 1- An exception is an event, which occurs during the execution of a program, that disrupts the normal flow of the program's instructions. 2- An Error "indicates serious problems that a reasonable application should not try to catch." while, - An Exception "indicates conditions that a reasonable application might want to catch."

   What is an exception in java? - Stack Overflow

   stackoverflow.com/questions/2802358/what-is-an-exception-in-java

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   What is exception handling in Java?

   • Exception Handling in Java is one of the effective means to handle runtime errors so that the regular flow of the application can be preserved. Java Exception Handling is a mechanism to handle runtime errors such as ClassNotFoundException, IOException, SQLException, RemoteException, etc. What are Java Exceptions?

   Exceptions in Java - GeeksforGeeks

   www.geeksforgeeks.org/exceptions-in-java/

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   What is an exception in JavaScript?

   • See this answer for a more detailed explanation. An exception is a recoverable error within your application. It's relative to what you're doing and what the user expects. Let's say you have a divide by 0 exception, and your application is an calculator. Most users would expect that a message would pop up explaining that they divided by 0.

   What is an exception in java? - Stack Overflow

   stackoverflow.com/questions/2802358/what-is-an-exception-in-java

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9. www.baeldung.com › java-exceptionsException Handling in Java | Baeldung

   www.baeldung.com › java-exceptions

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   May 11, 2024 · Learn the basics of exception handling in Java as well as some best and worst practices.