WallE | A reading mini program , including articles | Android Architecture library

You can't give same id's to different elements in DOM but you can create your custom attributes. I created button-id for each button. Then used it to get the row that is clicked.

ImageIcon("walle.png") is looking for the file relative to the location from which you executed the java command.

You can check what the "working" directory is by adding System.getProperty("user.dir") to your code. You can also check to see if the file exists from within the current context using System.getProperty(new File("walle.png").exists())

if that was the case it would cause a FileNotFoundException instead of printing null

Actually, ImageIcon doesn't throw an exception, it simply fails silently, which is why I tend to recommend not using it.

Instead, you should be using ImageIO, part from supporting more formats (and been expandable), it will also throw an exception if the image can't be loaded and won't return until the image is fully loaded.

See Reading/Loading an Image for more details

Forementioned PNG is in the same directory

Same directory as the class or the working directory? In general, I recommend getting use to using embedded resources, as it resolves many of the issues with "execution context"

I don't use an IDE

I'd probably recommend making use of one as it will help solve some of these issues and let you focus on learning the language.

So, my directory structure looks something like...

You would use decodebin that would select the decoder according to a rank built into plugins. That should select the most efficient one available for decoding:

This will process the old array into a new one, It uses the user_id as the key of the new array so it can check if it is creating a new occurance or just adding the length to an existing occurance in the new array

I see at least these issues in your code:

• The wall is built at a random position without taking into account the odd/even division of your cells in potential-wall / not-wall cells (which is the reason why you had this.COLS = this.width*2+1 in the constructor). As a consequence your walls can end up adjacent to eachother, leaving no room for open cells. You should only place horizontal walls at even Y-coordinates, and vertical walls at even X-coordinates.

• The door in the wall is always made at the extreme end of the wall, while the algorithm should make the gap in that wall randomly.

• There is only one recursive call, which means the algorithm is not aware of the fact that a wall generally divides the room into two partitions, each of which should (generally) be further divided up through recursion. So you need two recursive calls instead of one.

If you correct those points it could work. However, I prefer a data structure where really each inner array element represents a cell, and the walls are inferred by properties of those cells. So, no cells will function as wall. Each cell then can track which are its neighbors (4 at the most). A wall can then be implemented by removing a neighbor from a cell (and doing the same in the reverse direction). The visualisation of a wall can then be done with border CSS styling.

Here is an implementation:

As mentioned in the comments, make a enum that returns the result of the operation, inclusive different error cases.

Not sure I fully understand, but just based on your example, you can achieve your outcome using (p.s. min applies only to numbers, I don't know how you want to compare strings using min):

To my surprise, this wasn't as much an issue with the code as much as it was with the testing application.

The basic injection technique I used is prevented by various exploit protections & security mitigations that Visual Studio 2010+ applies to any applications built in release mode.

If I build my testing application in debug mode, there is no exception. If I use a non-VS built application, there is no exception.

I still need to fix how I create my threads, because no thread is created, but I've figured this out, that should be easy enough.

First, you must define predicate extends/2 using rel1/2: