Java in a Nutshell, 5th Edition [Electronic resources]

FileReader is a convenience subclass of InputStreamReader that is useful when you want to read text (as opposed to binary data) from a file. You create a FileReader by specifying the file to be read in any of three possible forms. The FileReader constructor internally creates a FileInputStream to read bytes from the specified file and uses the functionality of its superclass, InputStreamReader, to convert those bytes from characters in the local encoding to the Unicode characters used by Java. Because FileReader is a trivial subclass of InputStreamReader, it does not define any read( ) methods or other methods of its own. Instead, it inherits all its methods from its superclass. If you want to read Unicode characters from a file that uses some encoding other than the default encoding for the locale, you must explicitly create your own InputStreamReader to perform the byte-to-character conversion.

public class 
FileReader  extends InputStreamReader {
// Public Constructors
public 
FileReader (FileDescriptor 
fd );  
public 
FileReader (File 
file ) throws FileNotFoundException;  
public 
FileReader (String 
fileName ) throws FileNotFoundException;  
}