The java.util.FileOutputStream class is an output stream for writing data to a File or to a FileDescriptor.Following are the important points about FileOutputStream:
This class is meant for writing streams of raw bytes such as image data.
For writing streams of characters, use FileWriter
类声明
以下是声明java.util.FileOutputStream class:
public class FileOutputStream extends OutputStream
类构造方法
| S.N. | 构造方法 & 详细描述 |
|---|---|
| 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. |
类方法
| S.N. | 方法 & 描述 |
|---|---|
| 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 | FileDescriptor getFD() 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. |
方法继承
此类从以下类继承了上面列出的方法
java.util.OutputStream
java.util.Object
