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Java in a Nutshell

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The java.io Package
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24.20 java.io.FileOutputStream (JDK 1.0)

This class is a subclass of OutputStream that writes data to a file specified by name, or by a File or FileDescriptor object. write() writes a byte or array of bytes to the file. To write binary data, you typically use this class in conjunction with a BufferedOutputStream and a DataOutputStream. To write text, you typically use it with a PrintWriter, BufferedWriter, and an OutputStreamWriter. Use close() to close a FileOutputStream when no further output will be written to it.

public class FileOutputStream extends OutputStream {
    // Public Constructors
            public FileOutputStream(String name) throws IOException;
        1.1  public FileOutputStream(String name, boolean append) throws IOException;
            public FileOutputStream(File file) throws IOException;
            public FileOutputStream(FileDescriptor fdObj);
    // Public Instance Methods
            public native void close() throws IOException;  // Overrides OutputStream
            public final FileDescriptor getFD() throws IOException;
            public native void write(int b) throws IOException;  // Defines OutputStream
            public void write(byte[] b) throws IOException;  // Overrides OutputStream
            public void write(byte[] b, int off, int len) throws IOException;  // Overrides OutputStream
    // Protected Instance Methods
            protected void finalize() throws IOException;  // Overrides Object
}

Hierarchy:

Object->OutputStream->FileOutputStream


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