writeX() method..

[Angela Xia]

Here is the question from JQPlus
How many bytes will be written by the following code snippet in the file?
...
DataOutputStream dos=new DataOutputStream( new FileOutputStream("data"));
int x=0x12341234;
dos.writeByte(x);
dos.writeChar(x);
dos.writeShort(x);
dos.writeInt(x);
dos.close();
the answer is 9. why? Thanks!

[Roy Ben Ami]

this one isnt as hard as u might think:
dos.writeByte(x); //writes a byte
dos.writeChar(x); // writes 2 bytes
dos.writeShort(x); // writes 2 bytes
dos.writeInt(x); // writes 4 bytes

alltogether 9.
first you write a byte to the file.
then you write a char and a short (each is 16 bit meaning 2 bytes).
then an int ( 32 bits - 4 bytes).