Reading an array of byte with special delimiter....help me!!

[gbattine]

Hi guys,
i've developed a java application that has in input a txt file with a
standard format

string string string
string double double
string double double

and stores it into an array of byte with a fixed format,
that is
byte(whitespace)byte(whitespace)byte(byte(whitespace)byte(whitespace)byte(byte(whitespace)byte(whitespace)byte(


that mean introducing byte whitespace value and byte ; value to
separate different columns and different rows.
Now i have to develop inverse routine,that has to read the array of
byte and rebuild its original format.
Can you help me with some idea ord code?
I'm inexepert...please help me with clear suggest...
I post you my routine that converts txt file into an array of byte
P.S.In my txt file number of columns and rows change for each file,what
is standard is a firtst headline that is an array of string and others
row with the same format string array of doubles....

public byte[] getBytes(){
byte middlerow=' ';
byte endrow=';';
Vector temp=new Vector(10000000);
int i=0;
String g=null;
Riga r;
Double val[];
while(i<intest.length){
//copio tutto nell'array di byte
byte []bytes = intest[i].getBytes();
//			memorizza in byte un elemento del vettore alla volta
for( Byte aByte : bytes ) {
temp.addElement( aByte );


}


temp.addElement( Byte.valueOf( middlerow ) );

i++;
}
temp.addElement(Byte.valueOf(endrow));
System.out.println("Intestazione convertita in byte");





for(int l=0;l<rows.size()-1;l++){
r=(Riga)rows.get(l);
g=r.getgeneid();
temp.addElement(g.getBytes());
temp.addElement(Byte.valueOf(middlerow));
val=r.getvalues();


for(int e=0;e<=val.length-1;e++){


temp.addElement(Byte.valueOf(val[e].byteValue()));
//val[e].byteValue() fa il casting double in byte
temp.addElement(Byte.valueOf(middlerow));
}
temp.addElement(Byte.valueOf(endrow));

}



byte [] b=new byte[temp.size()];

for (int k=0;i<temp.size();i++){
b[k]=(((Byte)temp.elementAt(k)).byteValue());
}
return b;


}

Thanks for your help...