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Factory.java
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Factory.java
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import java.lang.reflect.Array;
/**
* An ugly little class for allocating objects and arrays of generic
* type T. This is needed to work around limitations of Java generics.
*/
public class Factory<T> {
Class<T> t;
/**
* Return the type associated with this factory
* @return
*/
public Class<T> type() {
return t;
}
/**
* Constructor - creates a factory for creating objects and
* arrays of type t(=T)
* @param t0
*/
public Factory(Class<T> t0) {
t = t0;
}
/**
* Allocate a new array of objects of type T.
* @param n the size of the array to allocate
* @return the array allocated
*/
@SuppressWarnings({"unchecked"})
protected T[] newArray(int n) {
return (T[])Array.newInstance(t, n);
}
/**
*
* @return
*/
public T newInstance() {
T x;
try {
x = t.newInstance();
} catch (Exception e) {
x = null;
}
return x;
}
}