FileReader (Java SE 11 & JDK 11 )
- java.lang.Object
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- java.io.Reader
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- java.io.InputStreamReader
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- java.io.FileReader
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- All Implemented Interfaces:
Closeable,AutoCloseable,Readable
public class FileReader extends InputStreamReader
Reads text from character files using a default buffer size. Decoding from bytes to characters uses either a specified charset or the platform's default charset.
The
FileReaderis meant for reading streams of characters. For reading streams of raw bytes, consider using aFileInputStream.- Since:
- 1.1
- See Also:
InputStreamReader,FileInputStream
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Constructor Summary
Constructors Constructor Description FileReader(File file)Creates a new
FileReader, given theFileto read, using the platform's default charset.FileReader(FileDescriptor fd)Creates a new
FileReader, given theFileDescriptorto read, using the platform's default charset.FileReader(File file, Charset charset)Creates a new
FileReader, given theFileto read and the charset.FileReader(String fileName)Creates a new
FileReader, given the name of the file to read, using the platform's default charset.FileReader(String fileName, Charset charset)Creates a new
FileReader, given the name of the file to read and the charset.
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Method Summary
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Methods declared in class java.io.InputStreamReader
getEncoding, read, read, ready
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Methods declared in class java.io.Reader
close, mark, markSupported, nullReader, read, read, reset, skip, transferTo
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Constructor Detail
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FileReader
public FileReader(String fileName) throws FileNotFoundException
Creates a new
FileReader, given the name of the file to read, using the platform's default charset.- Parameters:
fileName- the name of the file to read- Throws:
FileNotFoundException- if the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.
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FileReader
public FileReader(File file) throws FileNotFoundException
Creates a new
FileReader, given theFileto read, using the platform's default charset.- Parameters:
file- theFileto read- Throws:
FileNotFoundException- if the file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.
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FileReader
public FileReader(FileDescriptor fd)
Creates a new
FileReader, given theFileDescriptorto read, using the platform's default charset.- Parameters:
fd- theFileDescriptorto read
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FileReader
public FileReader(String fileName, Charset charset) throws IOException
Creates a new
FileReader, given the name of the file to read and the charset.- Parameters:
fileName- the name of the file to readcharset- the charset- Throws:
IOException- if the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.- Since:
- 11
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FileReader
public FileReader(File file, Charset charset) throws IOException
Creates a new
FileReader, given theFileto read and the charset.- Parameters:
file- theFileto readcharset- the charset- Throws:
IOException- if the file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.- Since:
- 11
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Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples.
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