public class PackedDataInputStream extends WrapperInputStream implements DataInput
PackedDataOutputStream
.Constructor and Description |
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PackedDataInputStream(InputStream in)
Construct a WrapperDataInputStream that will read from the specified InputStream object.
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Modifier and Type | Method and Description |
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boolean |
readBoolean()
Read a boolean value.
|
byte |
readByte()
Read a byte value.
|
char |
readChar()
Read a char value.
|
double |
readDouble()
Read a double value.
|
float |
readFloat()
Read a float value.
|
void |
readFully(byte[] ab)
Read
ab.length bytes and store them in ab . |
void |
readFully(byte[] ab, int of, int cb)
Read
cb bytes and store them in ab starting at offset of . |
int |
readInt()
Read an int value.
|
String |
readLine()
Reads the next "line" of text.
|
long |
readLong()
Read a long value.
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short |
readShort()
Read a short value.
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int |
readUnsignedByte()
Read an unsigned byte value.
|
int |
readUnsignedShort()
Read an unsigned short value.
|
String |
readUTF()
Reads a String value.
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int |
skipBytes(int cb)
Skips over up to the specified number of bytes of data.
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available, close, ensureInputStream, getInputStream, mark, markSupported, read, read, read, reset, setInputStream, skip
public PackedDataInputStream(InputStream in)
in
- an InputStream to read frompublic void readFully(byte[] ab) throws IOException
ab.length
bytes and store them in ab
.
This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.
readFully
in interface DataInput
ab
- the array to store the bytes which are read from the streamNullPointerException
- if the passed array is nullEOFException
- if the stream is exhausted before the number of bytes indicated by the array length could be readIOException
- if an I/O error occurspublic void readFully(byte[] ab, int of, int cb) throws IOException
cb
bytes and store them in ab
starting at offset of
.
This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.
readFully
in interface DataInput
ab
- the array to store the bytes which are read from the streamof
- the offset into the array that the read bytes will be storedcb
- the maximum number of bytes to readNullPointerException
- if the passed array is nullIndexOutOfBoundsException
- if of
or cb
is negative, or of+cb
is greater than the length of the ab
EOFException
- if the stream is exhausted before the number of bytes indicated by the array length could be readIOException
- if an I/O error occurspublic int skipBytes(int cb) throws IOException
skipBytes
in interface DataInput
cb
- the maximum number of bytes to skip overIOException
- if an I/O error occurspublic boolean readBoolean() throws IOException
This method is the counterpart for the DataOutput.writeBoolean(boolean)
method.
readBoolean
in interface DataInput
true
or false
EOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic byte readByte() throws IOException
This method is the counterpart for the DataOutput.writeByte(int)
method.
readByte
in interface DataInput
byte
valueEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic int readUnsignedByte() throws IOException
This method is the counterpart for the DataOutput.writeByte(int)
method when it is used with unsigned 8-bit values.
readUnsignedByte
in interface DataInput
int
value in the range 0x00 to 0xFFEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic short readShort() throws IOException
This method is the counterpart for the DataOutput.writeShort(int)
method.
readShort
in interface DataInput
short
valueEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic int readUnsignedShort() throws IOException
This method is the counterpart for the DataOutput.writeShort(int)
method when it is used with unsigned 16-bit values.
readUnsignedShort
in interface DataInput
int
value in the range of 0x0000 to 0xFFFFEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic char readChar() throws IOException
This method is the counterpart for the DataOutput.writeChar(int)
method.
readChar
in interface DataInput
char
valueEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic int readInt() throws IOException
This method is the counterpart for the DataOutput.writeInt(int)
method.
readInt
in interface DataInput
int
valueEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic long readLong() throws IOException
This method is the counterpart for the DataOutput.writeLong(long)
method.
readLong
in interface DataInput
long
valueEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic float readFloat() throws IOException
This method is the counterpart for the DataOutput.writeFloat(float)
method.
readFloat
in interface DataInput
float
valueEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic double readDouble() throws IOException
This method is the counterpart for the DataOutput.writeDouble(double)
method.
readDouble
in interface DataInput
double
valueEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurspublic String readLine() throws IOException
This method does not have a counterpart in the DataOutput
interface. Furthermore, this method is defined as operating on bytes and not on characters, and thus it should be selected for use only after careful consideration, as if it were deprecated.
readLine
in interface DataInput
IOException
- if an I/O error occurs.public String readUTF() throws IOException
This method is the counterpart for the DataOutput.writeUTF(java.lang.String)
method.
readUTF
in interface DataInput
UTFDataFormatException
- if the bytes that were read were not a valid UTF-8 encoded stringEOFException
- if the value could not be read because no more data remains to be readIOException
- if an I/O error occurs