Accessing Field Variable From Generic Object

I have two classes, ClassOne and ClassTwo, that update a public field data i.e., public class ClassOne { public byte[] data = new byte[10]; // Thread that updates data }

Solution 1:

Create an interface DataProvider with a method getData() which returns your data field. Then in your class ParseMyData<T> you will write instead ParseMyData<T extends DataProvider>.

publicclassParseMyData<TextendsDataProvider> {

    T classOneOrClassTwo;

    ParseMyData(T t) {
        classOneOrClassTwo = t;
    }

    publicvoidparseIt() {
        classOneOrClassTwo.getData();
    }

Alternatively you might also use your version, but do an instanceof check first and then cast to either ClassOne or ClassTwo. But I'd recommend you to go with the first option.