Unchecked cast: 'java.lang.Object' to 'T'

This warning occurs when you are casting an object of type Object to a generic type T without any type checking. It means that the compiler cannot guarantee the safety of the cast, and there is a risk of a ClassCastException at runtime.

To avoid this warning, you can use type checking to ensure that the cast is safe. For example, you can use the instanceof operator to check if the object is of the correct type before casting it:

if (obj instanceof T) {
    T value = (T) obj;
    // ...
}

Alternatively, you can use a type parameter to specify the type of the object at compile time:

public <T> T getObject(Class<T> clazz) {
    Object obj = // get object from somewhere
    return clazz.cast(obj);
}

This method uses the cast method of the Class class to perform the cast, which is safer than a simple type cast.