What is the error exception in thread main Java Util NoSuchElementException?

Posted on by Author

What is the error exception in thread main Java Util NoSuchElementException?

The NoSuchElementException in Java is thrown when one tries to access an iterable beyond its maximum limit. This means that, this exception is thrown by various accessor methods to indicate that the element being requested does not exist .

How do I overcome NoSuchElementException?

Solution. The solution to this​ exception is to check whether the next position of an iterable is filled or empty. You should only move to this position if the check returns that the position is not empty.

How do I get rid of NoSuchElementException in Java?

So in order to avoid this NoSuchElementException we need to always call,

  1. Iterator. hasNext() or.
  2. Enumeration. hasMoreElements() or.
  3. hasMoreToken() method before calling next( ) or nextElement or nextToken() method.
READ:   In which state was the Kalinga in present?

What is exception in thread main error in Java?

An exception is an issue (run time error) occurred during the execution of a program. When an exception occurred the program gets terminated abruptly and, the code past the line that generated the exception never gets executed.

How do you fix exceptions in Java?

9 Best Practices to Handle Exceptions in Java

  1. Clean Up Resources in a Finally Block or Use a Try-With-Resource Statement.
  2. Prefer Specific Exceptions.
  3. Document the Exceptions You Specify.
  4. Throw Exceptions With Descriptive Messages.
  5. Catch the Most Specific Exception First.
  6. Don’t Catch Throwable.
  7. Don’t Ignore Exceptions.

How do I fix an exception handler error?

Fatal error – Exception in exception handler

  1. Run the Game in Compatibility Mode.
  2. Configure the NVIDIA Optimus Graphics Settings.
  3. Install DirectX End-User Runtimes (June 2010)
  4. Switch Off the Origin In-Game Setting.
  5. Install the Intel(R) HD Graphics 4400 Graphics Card Driver.
  6. Add a NVIDIA Graphics Card to an Intel HD Desktop.
READ:   What should I put on my Njhs essay?

Why do we need to throw exceptions?

Exceptions should be used for exceptional situations outside of the normal logic of a program. In the example program an out of range value is likely to be fairly common and should be dealt with using normal if-else type logic.

What is Java Util InputMismatchException?

java.util.InputMismatchException. Thrown by a Scanner to indicate that the token retrieved does not match the pattern for the expected type, or that the token is out of range for the expected type.

How do you fix exceptions in java?

What is exception in thread main java Util InputMismatchException?

InputMismatchException? A Scanner throws this exception to indicate that the token retrieved does not match the expected type pattern, or that the token is out of range for the expected type. In simpler terms, you will generally get this error when user input or file data do not match with expected type.

How do I fix Exception in thread main Java Lang NullPointerException?

READ:   How do you cram inorganic chemistry?

In Java, the java. lang. NullPointerException is thrown when a reference variable is accessed (or de-referenced) and is not pointing to any object. This error can be resolved by using a try-catch block or an if-else condition to check if a reference variable is null before dereferencing it.

What does exception in main mean Java?

The Exception in thread “main” suggests that this error has occurred in the main thread, the thread which is responsible for running the Java application. This error can occur to any thread, but if it happens in the main thread, then your program will crash.