Tag: class

how to make the Value “B” & “K” fill only certain number of cells Randomly

I have board made from class in Java with values (K, L) that will randomly fill the board. I wonder how to make the value “K” fill only certain number of cells (8 cells) randomly and the rest “L” would fill the board. My aim is to get a board where “K” appears 8 times and t…

Why am I getting an error when I try to create the Scoreboard object with an array?

arrays class java object

The last line in this is giving me an error and I’m not sure why because those are the parameters for the Scoreboard class. Answer Short answer Change to: Longer answer Consider the code: You are not doing the incorrect So as you know, there is no necessity to pass the variable type as well as the value…

Accessing array attributes from other classes with setter/getter

class get java methods set

I’m new to Java and was wondering how to access attributes from other classes with setter/getter if they are arrays. Currently, I have one date class that sets a date with parameters for month/day/year. I need to make another class that uses the date class to set a date of hire to store as an attribute,…

How to call a method twice in a row?

class java methods

I have a code where in my class I would like to be able to call the method answer twice like qns.answer(5).answer(7). But right now when I call the method answer as below, I get the error cannot find symbol. For example: Would appreciate if you could kindly give some pointers on how to get around this. Answer…

data type and calculate average in java

arrays class java types

I am working on a java code that calculates the average of grades in an array for N of students and it is working fine when I enter grades like {3,4,3} but when I use numbers with decimals like {3.7,2.5,3.2} it starts giving me errors and I want to make a class of data type Students for example. Any help

How do I print out the instance variable x from my Main class using a ‘Second’ class? [closed]

class instance java variables

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 1 y…

How to call a method from a class that contains a constructor?

class constructor java

I recently learned that calling a class that contains a constructor means that it will call the constructor only, but what if I want to call a method from that class in Main? Let’s say I have a class that looks like this And in Main, I want to create an instance of Student and call showDetails(), howeve…

How to implement a generic interface that extends another generic interface in Java?

class design-patterns generics interface java

I am new to Java and working on implementing generic interfaces and that’s where I’d love some help. I want to implement a generic interface in Java that extends another interface. This is how the current interface structure looks like – I want to implement the ItemsProviderInterface interfa…

Converting Class of an Object into a Child Class

class java object

Say I have the following classes Then I get an object from an array of Parents If this object is of the child class, I want to cast the tempParent into the child class in order to use “doSomething” without having to create a new object This, however, does not work. I still get an error telling me …

ClassNotFoundException thrown

class java

I have an issue with my program for a project assignment throwing multiple ClassNotFoundException. I think the problem stems from the BaseGear class, which is the abstract super class for all items in the game. Each item must be restricted by class so in the constructor the string restrict is provided as an a…