Web Reference: As far I know, the two most common methods of reading character-based data from a file in Java is using Scanner or BufferedReader. I also know that the BufferedReader reads files efficiently by using a buffer to avoid physical disk operations. Jul 23, 2025 · Java provides several classes for reading input, but two of the most commonly used are Scanner and BufferedReader. The main difference between Scanner and BufferedReader is: Scanner class provides parsing and input reading capabilities with built-in methods for different data types. Scanner and BufferedReader classes are used to read input from an external system. Scanner is normally used when we know input is of type string or of primitive types, and BufferedReader is used to read text from character streams while buffering the characters for efficient reading of characters.
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