我可以在 java 中的变量上应用泛型吗？

Question

in java we can apply generics on a class and methods as shown below

class Sample<T>{}
public <T,E> void test(T x, E y){}

this helps us write generic algorithms , help us reuse the same code for multiple inputs ,similarly can we apply generics on primitive variables?? if it is possible we can reuse the same variable again and again for different inputs , i know

class Sample<T>{public T temp;}

is possible.

but the question is

class Sample{public <T> T temp;}

is this possible

Answer 1

No it's not, it wouldn't be possible to tell what type temp is, so it wouldn't help the compiler restrict anything (that is the point of generics), or tools to make any suggestions.

You can't get better in this case than making temp an Object. (or use your second example)