Mega Code Archive
Casting within a generic class hierarchy
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You can cast one instance of a generic class into another only if
the two are otherwise compatible and their type arguments are the same.
class Gen<T> {
T ob;
Gen(T o) {
ob = o;
}
T getObject() {
return ob;
}
}
class Gen2<T> extends Gen<T> {
Gen2(T o) {
super(o);
}
}
public class MainClass {
public static void main(String args[]) {
Gen<Integer> intObject = new Gen<Integer>(88);
Gen2<Long> longObject = new Gen2<Long>(99L);
//longObject = (Gen2<Long>)intObject;
}
}
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