Re: Name not displaying in program
Nobody you want to meet.... wrote:
Guys,
I have a question for you all. I'm writing a random access file, that will
take my input and store the information to the file.
This is my output from the program. The last name isn't showing at all. I
know it has to do with string buffer. Please let me know what i can do?
Account number First Name Last Name
3 Jeff : 0
// read a record from the specified RandomAccessFile
public void read( RandomAccessFile file ) throws IOException
{
setAccountNumber(file.readInt());
setFirstName( padName( file ) );
setLastName( padName( file ) );
}
// ensure that name is proper length
private String padName( RandomAccessFile file ) throws IOException
{
char name[] = new char[ 30 ];
for ( int i = 0; i < name.length; i++ )
name[ i ] = file.readChar();
return new String( name ).replace( '\0', ' ' );
}
// write a record to the specified RandomAccessFile
public void write( RandomAccessFile file ) throws IOException
{
file.writeInt( getAccountNumber() );
StringBuffer buffer;
if ( FirstName != null )
buffer = new StringBuffer( FirstName );
if ( LastName != null )
buffer = new StringBuffer( LastName );
else
buffer = new StringBuffer(30);
buffer.setLength( 30 );
file.writeChars( buffer.toString() );
}
It is always better if you can supply a small test program that will
compile that we can use to see your problem.
Since we don't have that, your code is not very clear and we have no
idea of the file format. RandomAccessFiles are normally used with fixed
length/field records. Data is written and read as a record and that
record is encoded/parsed as necessary.
--
Knute Johnson
email s/nospam/knute/
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