Questions: I couldn’t grasp the idea why the codes below prints console Person twice. I thought it should have been Person and Student. When getInfo() inside printPerson() is called through “a” object, why is the one inside Person class being invoked and why is the one in the Student class not invoked? Thanks in advance. …
Tag: class
class – UML relationship between product (of different types), user and GUI (JAVA)
Questions: The way I have implemented my code so far is that I have an abstract class Product, which implements an interface CanProduct which contains all the methods that the product should carry out in the program. Then I have my ElectricalProduct and FoodProduct class which extend my abstract Product class and override all the …
android – java.lang.ClassCastException: com.ethanhua.skeleton.SkeletonAdapter cannot be cast to me.tatarka.bindingcollectionadapter2.BindingRecyclerViewAdapter
Exception or error: I am trying to use the skeleton loading library(https://github.com/ethanhua/Skeleton) with data binding and for recycleView I am using the collection adapter library(https://github.com/evant/binding-collection-adapter) Exception: java.lang.ClassCastException: com.ethanhua.skeleton.SkeletonAdapter cannot be cast to me.tatarka.bindingcollectionadapter2.BindingRecyclerViewAdapter at me.tatarka.bindingcollectionadapter2.BindingRecyclerViewAdapters.setAdapter(BindingRecyclerViewAdapters.java:19) at com.coroutinedemo.databinding.FragmentTodoListBindingImpl.executeBindings(FragmentTodoListBindingImpl.java:209) Please help to get rid of it. How to solve: More exceptions or solve method
android – java.lang.ClassNotFoundException: Didn't find class "java.sql.SQLType" on path: DexPathList
Questions: Learning & building an app in Android Studio, using JDBC to set a connection to MySQL. I’m calling registerUser method from one class to another activity where a register button is made. When register button is clicked, I call this method and pass the username and password received as parameters. It should then set …
java.lang.ClassCastException: class net.sf.json.JSONObject cannot be cast to class net.sf.json.JSONArray – Stack Overflow
Questions: i have a problem with JSON. an exception is thrown at this line in my code String jsontxt = IOUtils.toString(new FileInputStream(Filename), “UTF-8”); JSONArray root = (JSONArray) JSONSerializer.toJSON(jsontxt); jsontxt is a String where all my JSON is stored. and for some reason i have this exception: Exception in thread “main” java.lang.ClassCastException: class net.sf.json.JSONObject cannot be …
java – Used Enum in Class Constructor, Method Within Class Won't Recognize Reference Variable – Stack Overflow
Questions: I’m taking a CSIS 1410 Class, and as part of an assignment, I needed to create an enum, Voltage. Then, I had to create a class that uses the enum as a parameter, but when attempting to use the reference variable voltage (lowercase v), it gives me error “voltage cannot be resolve to variable”. …
Android is it possible to remove a class from an imported gradle library?
Exception or error: I’m searching and trying already one day long to remove a class from an imported library over gradle without really getting it to work, should this be possible with Android+gradle? How to do this? For example if I include a library like so: implementation ‘org.bouncycastle:bcpkix-jdk15on:1.64’ How to remove a class by name …
How to handle a C++ header file with a extern call to C function and a class object
Exception or error: I am trying to compile an application involving both C and C++ files. With one particular header I face issues. The file in question (a C++ header file), would look something like this: #ifndef TASK_H #define TASK_H #include “MyCCPObject.h” int foo1(int); int foo2(int); int fooObject(MyCCPObject myCppObject); // Function involves a Class “MyCCPObject” …