- java.lang.Object
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- java.io.Writer
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- java.io.OutputStreamWriter
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- java.io.FileWriter
 
 
 
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- All Implemented Interfaces:
- Closeable,- Flushable,- Appendable,- AutoCloseable
 
 public class FileWriter extends OutputStreamWriter Writes text to character files using a default buffer size. Encoding from characters to bytes uses either a specified charset or the platform's default charset.Whether or not a file is available or may be created depends upon the underlying platform. Some platforms, in particular, allow a file to be opened for writing by only one FileWriter(or other file-writing object) at a time. In such situations the constructors in this class will fail if the file involved is already open.The FileWriteris meant for writing streams of characters. For writing streams of raw bytes, consider using aFileOutputStream.- Since:
- 1.1
- See Also:
- OutputStreamWriter,- FileOutputStream
 
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Constructor SummaryConstructors Constructor Description FileWriter(File file)FileWriter(FileDescriptor fd)Constructs aFileWritergiven a file descriptor, using the platform's default charset.FileWriter(File file, boolean append)Constructs aFileWritergiven theFileto write and a boolean indicating whether to append the data written, using the platform's default charset.FileWriter(File file, Charset charset)FileWriter(File file, Charset charset, boolean append)Constructs aFileWritergiven theFileto write, charset and a boolean indicating whether to append the data written.FileWriter(String fileName)Constructs aFileWritergiven a file name, using the platform's default charsetFileWriter(String fileName, boolean append)Constructs aFileWritergiven a file name and a boolean indicating whether to append the data written, using the platform's default charset.FileWriter(String fileName, Charset charset)Constructs aFileWritergiven a file name and charset.FileWriter(String fileName, Charset charset, boolean append)Constructs aFileWritergiven a file name, charset and a boolean indicating whether to append the data written.
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Method Summary- 
Methods declared in class java.io.OutputStreamWriterflush, getEncoding, write, write, write
 
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Constructor Detail- 
FileWriterpublic FileWriter(String fileName) throws IOException Constructs aFileWritergiven a file name, using the platform's default charset- Parameters:
- fileName- String The system-dependent filename.
- Throws:
- IOException- if the named file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
 
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FileWriterpublic FileWriter(String fileName, boolean append) throws IOException Constructs aFileWritergiven a file name and a boolean indicating whether to append the data written, using the platform's default charset.- Parameters:
- fileName- String The system-dependent filename.
- append- boolean if- true, then data will be written to the end of the file rather than the beginning.
- Throws:
- IOException- if the named file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
 
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FileWriterpublic FileWriter(File file) throws IOException - Parameters:
- file- the- Fileto write.
- Throws:
- IOException- if the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
 
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FileWriterpublic FileWriter(File file, boolean append) throws IOException Constructs aFileWritergiven theFileto write and a boolean indicating whether to append the data written, using the platform's default charset.- Parameters:
- file- the- Fileto write
- append- if- true, then bytes will be written to the end of the file rather than the beginning
- Throws:
- IOException- if the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
- Since:
- 1.4
 
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FileWriterpublic FileWriter(FileDescriptor fd) Constructs aFileWritergiven a file descriptor, using the platform's default charset.- Parameters:
- fd- the- FileDescriptorto write.
 
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FileWriterpublic FileWriter(String fileName, Charset charset) throws IOException Constructs aFileWritergiven a file name and charset.- Parameters:
- fileName- the name of the file to write
- charset- the charset
- Throws:
- IOException- if the named file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
- Since:
- 11
 
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FileWriterpublic FileWriter(String fileName, Charset charset, boolean append) throws IOException Constructs aFileWritergiven a file name, charset and a boolean indicating whether to append the data written.- Parameters:
- fileName- the name of the file to write
- charset- the charset
- append- a boolean. If- true, the writer will write the data to the end of the file rather than the beginning.
- Throws:
- IOException- if the named file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
- Since:
- 11
 
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FileWriterpublic FileWriter(File file, Charset charset) throws IOException - Parameters:
- file- the- Fileto write
- charset- the charset
- Throws:
- IOException- if the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
- Since:
- 11
 
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FileWriterpublic FileWriter(File file, Charset charset, boolean append) throws IOException Constructs aFileWritergiven theFileto write, charset and a boolean indicating whether to append the data written.- Parameters:
- file- the- Fileto write
- charset- the charset
- append- a boolean. If- true, the writer will write the data to the end of the file rather than the beginning.
- Throws:
- IOException- if the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
- Since:
- 11
 
 
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