I made a minimal reduced example of my problem: The Maze class creates a 2D Boolean Array with the Method generateMaze() (The content of mazeArray is irrelevant in this example). The main-Thread from Walker calls that Method and thereby creates this mazeArray from the Maze-class. I do not understand how I can call this Array in Walker.walk? Im affraid I
Tag: boolean
How to check if a traversion has reached a certain Index in a 2D-Array in Java?
Let’s say we have a 2D-boolean Array as a presentation of a maze, the size of the Array is not fixed and random. The walls are depicted as true: The exit of the maze is at a fixed Index. How can I check wether the traversion has reached this certain index or not? My idea was to create an int[
JPA repository Boolean Query – return null pointer exception
I have Java springBoot project With repository that included boolean custom query. but the system run to null pointer exception apart from return “false”. this is the query: I called the method: and this is the error: Answer Your query is designed to return whatever entity (called CustomersVsCoupons from now on) is mapped to the table customer_vs_coupons, not a Boolean.
Java Boolean method return is always false [closed]
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 9 months ago. Improve this question
Are booleans implicitly true?
I’m a bit confused on this bit of code. My professor explained that the output will always be true but I’m confused on why. I changed the boolean to both true and false but the output is always true and I’m having a hard time explaining the logic behind it. I assumed that since a false && true will always
simple java program returning incorrect value
Hello I am brushing up on Java practice. I have this very simple program: There are two int values, along with a boolean variable. i) The program will return true if one of these values is negative and one is positive. ii) However, if the boolean variable is true, the program can only return true if both int values are
Javers – comparison String, Collection and Boolean with defined rules
I have 2 classes: @Data @Builder public class Boss { private String name; private List subordinates; } @Data @Builder public class Employee { private String …
how to traverse a Boolean recursion array
The exercise: Build a recursion(with no loops) that every cell that you go inside is the number of steps that you can go, it could be right/left until you get to the last cell. if you can’t get to the last cell return false, else return true. you must start from index 0. My problem: I build the program, it’s
Utility method to convert Boolean into boolean and handle null in Java
Is there a utility method in Java which converts Boolean into boolean and automatically handles null reference to Boolean as false?
Boolean flags aren’t corresponding to the switch they are in
I’m trying to make a traffic simulator and I completely underestimated how hard it was going to be to get all the classes to work together. I’ve finally gotten all the functions to work quite well, and am now I’m trying to put them together. On my lights algorithm I’ve gotten the lights to change fine on a timer, but