Question

I want to ask a Java String[] question. In the java, if a variable convents to another, it can add the (String), (int), (double),… before the variable in the left hand side. However, is there something like (String[]) in Java as I want to convent the variable into (String[]).

Answer 1

Yes, there is (String[]) which will cast into an array of String.

But to be able to cast into a String array, you must have an array of a super type of String or a super type of array (only Object, Serializable and Cloneable).

So only these casts will work :

String[] sArray = null;
Object[] oArray = null;
Serializable[] serArray = null;
Comparable[] compArray = null;
CharSequence[] charSeqArray = null;
Object object = null;
Serializable serializable = null;
Cloneable cloneable = null;

sArray = (String[]) oArray;
sArray = (String[]) serArray;
sArray = (String[]) compArray;
sArray = (String[]) charSeqArray;
sArray = (String[]) object;
sArray = (String[]) serializable;
sArray = (String[]) cloneable;