java.io
Interface DataInput

All Known Implementing Classes:

DataInputStream, RandomAccessFile

public interface DataInput

DataInput is an interface describing streams that can read input in a machine-independent format.

See Also:

DataInputStream, DataOutput

Method Summary

boolean	readBoolean() Reads in a boolean.
byte	readByte() Reads an 8 bit byte.
char	readChar() Reads a 16 bit char.
double	readDouble() Reads a 64 bit double.
float	readFloat() Reads a 32 bit float.
void	readFully(byte[] b) Reads bytes, blocking until all bytes are read.
void	readFully(byte[] b, int off, int len) Reads bytes, blocking until all bytes are read.
int	readInt() Reads a 32 bit int.
String	readLine()
long	readLong() Reads a 64 bit long.
short	readShort() Reads a 16 bit short.
int	readUnsignedByte() Reads an unsigned 8 bit byte.
int	readUnsignedShort() Reads an unsigned 16 bit short.
String	readUTF()
int	skipBytes(int n) Skips bytes, block until all bytes are skipped.

Method Detail

readFully

public void readFully(byte[] b)
               throws IOException

Reads bytes, blocking until all bytes are read.

Parameters:

b - the buffer into which the data is read

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readFully

public void readFully(byte[] b,
                      int off,
                      int len)
               throws IOException

Reads bytes, blocking until all bytes are read.

Parameters:

b - the buffer into which the data is read

off - the start offset of the data

len - the maximum number of bytes to read

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

skipBytes

public int skipBytes(int n)
              throws IOException

Skips bytes, block until all bytes are skipped.

Parameters:

n - the number of bytes to be skipped

Returns:

the actual number of bytes skipped.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readBoolean

public boolean readBoolean()
                    throws IOException

Reads in a boolean.

Returns:

the boolean read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readByte

public byte readByte()
              throws IOException

Reads an 8 bit byte.

Returns:

the 8 bit byte read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Reads an unsigned 8 bit byte.

Returns:

the 8 bit byte read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readShort

public short readShort()
                throws IOException

Reads a 16 bit short.

Returns:

the 16 bit short read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Reads an unsigned 16 bit short.

Returns:

the 16 bit short read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readChar

public char readChar()
              throws IOException

Reads a 16 bit char.

Returns:

the 16 bit char read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readInt

public int readInt()
            throws IOException

Reads a 32 bit int.

Returns:

the 32 bit integer read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readLong

public long readLong()
              throws IOException

Reads a 64 bit long.

Returns:

the read 64 bit long.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readFloat

public float readFloat()
                throws IOException

Reads a 32 bit float.

Returns:

the 32 bit float read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readDouble

public double readDouble()
                  throws IOException

Reads a 64 bit double.

Returns:

the 64 bit double read.

Throws:

EOFException - If end of file is reached.

IOException - If other I/O error has occurred.

readLine

public String readLine()
                throws IOException

IOException

readUTF

public String readUTF()
               throws IOException

IOException