Type casting arrays

Question

i m reading an array of int from ObjectOutPutStream. can any body tell how do we type cast an object to array ??

Answer 1

karansha:
I'm sure you mean you're trying to read in an int[] from an ObjectInputStream that was written to an ObjectOutputStream since you can't read from an OutputStream. Use something like this:
ObjectInputStream in = <whatever>;
int[] intArray = (int[])in.readObject();adramolek:
Why should you use an Integer[] instead of an int[] for serialization? All arrays of primitives -- boolean[], byte[], double[], float[], int[], long[], short[] -- are serializable as is; there is no need to convert them to arrays of their wrapper types simply to serialize them.
In fact, the output from the following piece of code shows exactly which interfaces are implements by an int[]:
Class cls = int[].class;
Class[] interfaces = cls.getInterfaces();
for (int i = 0; i < interfaces.length; i++) {
    System.out.println(interfaces.getName());
The output is:
java.lang.Cloneable
java.io.SerializableThe output is identical for each of boolean[], byte[], double[], float[], int[], long[], and short[], showing that each type is both serializable [i]and cloneable.
Shaun