T is some class) will not take into account the contents of the array.
Arrays.hashCode(Object) static method to calculate an array's hash code instead.
Any array type inherits the default
hashCode() implementations from
Object. By default, object equality works by comparing reference addresses (like
a == b), and an object's hash code can also similarly depend on its address (The JVM specification leaves this at the discretion of the implementation). Make sure this is the behavior you actually want.
String names = ...; int namesHash = names.hashCode(); // Bad.
int namesHash = Arrays.hashCode(names);
If you actually intend to use the default
hashCode implementation of arrays, you may safely ignore this issue.