Will the following statement work?
DataOutputStream dataOut = new DataOutputStream( "myFile.dat" );
No. You need a
FileOutputStream to connect to
a disk file, then connect a
DataOutputStream to the
is used to write bytes representing primitive data types.
It writes to another output stream
(such as a
because it uses the same data format on all computer platforms.
writes the four bytes of an
in the same order (high byte to low byte) on all computers.
public DataOutputStream(OutputStream out) Construct a data output stream.
public void flush() throws IOException Flushes the stream. public final int size() Return the number of bytes written so far. public void write(int b) throws IOException Writes the low eight bits of the argument. public final void writeBoolean(boolean b) throws IOException Writes a boolean as a 1-byte value. True is written as 00000001, false is written as 00000000. public final void writeByte(int b) throws IOException public void writeBytes(String s) throws IOException Writes the low eight bits of each character in the string. public final void writeChar(int c) throws IOException public void writeDouble(double v) throws IOException public void writeFloat(float f) throws IOException public void writeInt(int i) throws IOException public void writeLong(long l) throws IOException public final void writeShort(int s) throws IOException
Bug Alert: The argument to
The low eight bits of the argument are written to the stream.
writeChar also takes an
out is a
How many bytes will the following write?
out.writeBoolean( true ); out.writeBoolean( false );
(Look at the documentation before answering.)