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Interface java.io.DataInput

public interface DataInput

Since:

JDK1.0

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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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.

 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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