Java重写方法，该方法具有泛型类型参数，并在调用时对其进行类型转换

public class ParentClass {
    public <T> void printValue(T value) {
        System.out.println("ParentClass: " + value);
    }
}

public class ChildClass extends ParentClass {
    @Override
    public <T> void printValue(T value) {
        if (value instanceof Integer) {
            int intValue = (Integer) value;
            System.out.println("ChildClass: " + intValue);
        } else if (value instanceof String) {
            String stringValue = (String) value;
            System.out.println("ChildClass: " + stringValue);
        }
    }
}

public class Main {
    public static void main(String[] args) {
        ParentClass parent = new ParentClass();
        parent.printValue(10); // 输出：ParentClass: 10

        ChildClass child = new ChildClass();
        child.printValue(10); // 输出：ChildClass: 10
        child.printValue("Hello"); // 输出：ChildClass: Hello
    }
}