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public  final  class  java.io.FileDescriptor
    extends  java.lang.Object  (I-§1.12)
{
        // Fields
    public final static FileDescriptor err;	§2.8.1
    public final static FileDescriptor in;	§2.8.2
    public final static FileDescriptor out;	§2.8.3

       // Constructors
    public FileDescriptor();	§2.8.4

        // Methods
    public boolean valid();	§2.8.5
}

Applications should not create their own file descriptors.

A handle to the standard error stream.

A handle to the standard input stream.

A handle to the standard output stream.

The default constructor.

Returns:

true if the file descriptor object represents a valid, open file or socket; false otherwise.

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