How Can I Prevent `NoSuchElementException` When Using a Scanner in Java?

No More Lines? Handling NoSuchElementException with Scanners

When utilizing a Scanner to read input, encountering a java.util.NoSuchElementException indicates that no further lines are available to read. This can often occur during file processing.

To rectify this issue, it's essential to check the availability of the next line before attempting to retrieve it. Utilize the hasNextLine() method, which returns true if a line is present or false if there are no more lines to read. Incorporate this check into your Scanner loop to avoid the exception.

For instance, adjust your loop as follows:

while (sc.hasNextLine()) {
    str = sc.nextLine();
    // ... continue processing
}

By incorporating the hasNextLine() check, you prevent attempts to read beyond the available lines, ensuring seamless input handling.

Note: To ensure accurate input handling, it's crucial to verify the validity of your input format, as exceptions may arise from improperly formatted data.

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