📅 最后修改于: 2020-11-15 02:42:33 🧑 作者: Mango
Java.io.FileOutputStream类是用于将数据写入File或FileDescriptor的输出流。以下是有关FileOutputStream的要点-
此类用于写入原始字节流，例如图像数据。
要编写字符流，请使用FileWriter 。
以下是Java.io.FileOutputStream类的声明-
public class FileOutputStream
extends OutputStream
| Sr.No. | Constructor & Description |
|---|---|
| 1 |
FileOutputStream(File file) This creates a file output stream to write to the file represented by the specified File object. |
| 2 |
FileOutputStream(File file, boolean append) This creates a file output stream to write to the file represented by the specified File object. |
| 3 |
FileOutputStream(FileDescriptor fdObj) This creates an output file stream to write to the specified file descriptor, which represents an existing connection to an actual file in the file system. |
| 4 |
FileOutputStream(String name) This creates an output file stream to write to the file with the specified name. |
| 5 |
FileOutputStream(String name, boolean append) This creates an output file stream to write to the file with the specified name. |
| Sr.No. | Method & Description |
|---|---|
| 1 | void close()
This method closes this file output stream and releases any system resources associated with this stream. |
| 2 | protected void finalize()
This method cleans up the connection to the file, and ensures that the close method of this file output stream is called when there are no more references to this stream. |
| 3 | FileChannel getChannel()
This method returns the unique FileChannel object associated with this file output stream. |
| 4 | FileDescriptorgetFD()
This method returns the file descriptor associated with this stream. |
| 5 | void write(byte[] b)
This method writes b.length bytes from the specified byte array to this file output stream. |
| 6 | void write(byte[] b, int off, int len)
This method writes len bytes from the specified byte array starting at offset off to this file output stream. |
| 7 | void write(int b)
This method writes the specified byte to this file output stream. |
此类从以下类继承方法-