New or initialize a object with a parent class instance

ObjectUtils.java

public class ObjectUtils {
    
    public static <T> T initByParent(T target, Object parent) throws IllegalAccessException {
        Class<?> parentClass = target.getClass().getSuperclass();
        
        if(parent.getClass() != parentClass) {
            throw new IllegalArgumentException("Invalid parent!");
        }
        
        Field[] fields = parentClass.getDeclaredFields();
        for(Field f : fields) {
            f.setAccessible(true);
            f.set(target, f.get(parent));
        }
        
        return target;
    }
    
    public static <T> T initByParent(Class<?> targetClass, Object parent) throws IllegalAccessException, InstantiationException {
        return (T)initByParent(targetClass.newInstance(), parent);
    }
}