How to Avoid 'No Line Found' Exceptions When Using Java's Scanner?

No Line Found Exception: Resolving Scanner Usage

When reading a file using Scanner, it's essential to handle situations where there are no more lines to read. If the Scanner reaches the end of the file without finding a line, it throws a java.util.NoSuchElementException with the message "No line found."

In the provided example, this exception occurs because the code doesn't check if there is a next line before calling sc.nextLine(). To resolve this, the loop should be modified to use hasNextLine() to check for the availability of lines:

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

Additionally, Readers, unlike Scanners, return null when they reach the end of file. This behavior is not dependent on the input file's format, making it a more reliable approach in certain scenarios.

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