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Interface java.io.DataInput

public interface DataInput

The data input interface is implemented by streams that can read primitive Java data types from a stream in a machine-independent manner.

See Also:: DataInputStream, DataOutput

readBoolean(): Reads a boolean value from the input stream.
readByte(): Reads a signed 8-bit value from the input stream.
readChar(): Reads a Unicode char value from the input stream.
readDouble(): Reads a double value from the input stream.
readFloat(): Reads a float value from the input stream.
readFully(byte[]): Reads b.length bytes into the byte array.
readFully(byte[], int, int): Reads b.length bytes into the byte array.
readInt(): Reads an int value from the input stream.
readLine(): Reads the next line of text from the input stream.
readLong(): Reads a long value from the input stream.
readShort(): Reads a 16-bit value from the input stream.
readUnsignedByte(): Reads an unsigned 8-bit value from the input stream.
readUnsignedShort(): Reads an unsigned 16-bit value from the input stream.
readUTF(): Reads in a string that has been encoded using a modified UTF-8 format.
skipBytes(int): Skips exactly n bytes of input.

readFully


 public abstract void readFully(byte b[]) throws IOException

Reads b.length bytes into the byte array. This method blocks until all the bytes are read.

Parameters:: b - the buffer into which the data is read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readFully


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

Reads b.length bytes into the byte array. This method blocks until all the bytes are read.

Parameters:: b - the buffer into which the data is read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

skipBytes


 public abstract int skipBytes(int n) throws IOException

Skips exactly n bytes of input.

Parameters:: n - the number of bytes to be skipped.
Returns:: the number of bytes skipped, which is always n.
Throws: EOFException: if this stream reaches the end before skipping all the bytes.
Throws: IOException: if an I/O error occurs.

readBoolean


 public abstract boolean readBoolean() throws IOException

Reads a boolean value from the input stream.

Returns:: the boolean value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readByte


 public abstract byte readByte() throws IOException

Reads a signed 8-bit value from the input stream.

Returns:: the 8-bit value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readUnsignedByte


 public abstract int readUnsignedByte() throws IOException

Reads an unsigned 8-bit value from the input stream.

Returns:: the unsigned 8-bit value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readShort


 public abstract short readShort() throws IOException

Reads a 16-bit value from the input stream.

Returns:: the 16-bit value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readUnsignedShort


 public abstract int readUnsignedShort() throws IOException

Reads an unsigned 16-bit value from the input stream.

Returns:: the unsigned 16-bit value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readChar


 public abstract char readChar() throws IOException

Reads a Unicode char value from the input stream.

Returns:: the Unicode char read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readInt


 public abstract int readInt() throws IOException

Reads an int value from the input stream.

Returns:: the int value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readLong


 public abstract long readLong() throws IOException

Reads a long value from the input stream.

Returns:: the long value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readFloat


 public abstract float readFloat() throws IOException

Reads a float value from the input stream.

Returns:: the float value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readDouble


 public abstract double readDouble() throws IOException

Reads a double value from the input stream.

Returns:: the double value read.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readLine


 public abstract String readLine() throws IOException

Reads the next line of text from the input stream.

Returns:: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.

readUTF


 public abstract String readUTF() throws IOException

Reads in a string that has been encoded using a modified UTF-8 format.

For an exact description of this method, see the discussion in Gosling, Joy, and Steele, The Java Language Specification.

Returns:: a Unicode string.
Throws: EOFException: if this stream reaches the end before reading all the bytes.
Throws: IOException: if an I/O error occurs.
Throws: UTFDataFormatException: if the bytes do not represent a valid UTF-8 encoding of a string.


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