Troubleshooting java.util.NoSuchElementException in Input Handling

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What Triggers NoSuchElementException?

Empty Input Source
When the input source—like a file or a console input—is empty or doesn’t contain enough lines to be read, attempting to read a line can result in NoSuchElementException.

Incorrect Use of Scanner Methods
Misusing the Scanner methods often leads to this exception. For example, calling nextLine() without checking if there is another line available:

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Premature Closure of Input Stream

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How to Resolve NoSuchElementException

Check for Input Availability
Always ensure that the input source has more data before performing read operations. Use methods like hasNextLine() with Scanner to check for available input:

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Avoid Premature Stream Closing

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Handle Edge Cases
Implement proper exception handling to cater to various edge cases and avoid abrupt application termination:

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