I have
private HashMap<Key<?>, Val<?>> myMap;
In this map under a specified key<T> is always val<T> (the same T). I want to make a function that uses this information and automatically gives me a value converted to given type. Is it possible? Something like this:
public class MyClass{
private HashMap<Key<?>, Val<?>> myMap;
public Val<T> getValue(Key<T> key) {
return (Val<T>) myMap.get(key)
}
(Type T is not given in the class.)
There are two possible solutions to this:
Define the generic type on the method:
public class MyClass{
private HashMap<Key<?>, Val<?>> myMap;
public <T> Val<T> getValue(Key<T> key){
return (Val<T>) myMap.get(key)
}
Define the generic type on the class:
public class MyClass<T> {
private HashMap<Key<?>, Val<?>> myMap;
public Val<T> getValue(Key<T> key) {
return (Val<T>) myMap.get(key);
}
}
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