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Message:

How Java can do C/C++ union?

Posted by Philip Chang on June 15, 2001 at 12:18 PM

I would like to know the best way to map a 100-byte array to class instance variables:

byte [] myArray = { '1', '2', '3', ..... }; // 100 bytes

class BlockOf100Bytes {
byte field1[4];
byte field2[26];
byte field3[41];
byte field4[9];
byte field5[20];

public void mapIt( byte [] byteArray )
{
// how to map byteArray to field1 to field5?
...java code...?

// C++ can do the following:
BlockOf100Bytes *pBlock =
(BlockOf100Bytes *)byteArray;

printf("field3=%.41s", pBlock->field3);
}
}

• Re : How Java can do C/C++ union? Pierre June 18, 2001 at 5:15 AM (1)
  • JAVA SUCKS JAVA SUCKS August 24, 2001 at 3:33 AM (0)