“Invalid signature file” when attempting to run a .jar?

My java program is packaged in a jar file and makes use of an external jar library, bouncy castle. My code compiles ...

gson throws MalformedJsonException?

I'm using gson to convert a json string to a Java-Object. The value of result2 is exactly the same as the value of r...

Unreachable Statement with Break?

So I had a previous question but realized I posted the wrong offending code. I've marked the offending statements be...

Cannot resolve symbol animation?

I am getting an error in the below two import statements import android.animation.AnimatorSet import android.anima...

How can I make a JUnit Test wait??

I have a JUnit test that I want to have wait for a period of time, synchronously. My JUnit test looks like this: @T...

How to close all opened drivers in Selenium??

I need to close all open Chrome drivers in Selenium. All my methods are closing only one of them. The reason why I n...

How to display row and column number in 2d array??

I currently have a 2d array of all '?', that displays like this: ? ? ? ? ? ? ? ? ? I need to display the ro...

How to draw a line on a existing jPanel in Swing (Java)??

I want to draw a simple line on my existing jPanel called mypanel. I want to do it like this: mypanel.drawLine(...

Java Server: Socket sending HTML code to browser?

I am trying to write a simple Java program using ServerSockets that will send some HTML code to the browser. Here is...

create an array of long?

I'm trying to create an array of long in java, but eclipse is showing me an error as shown below: Below is my code: ...

Unable to uninstall JDK 10 – internal error 2318?

I am trying to uninstall jdk 10.1, and I am getting the above error message saying "internal error-2318". I tried in...

Basic Bubble Sort with ArrayList in Java?

I was implementing a comparator, and it wasn't working, so I thought I'd write a basic bubble sort. int[] numbers =...

Can the char type be categorized as an integer??

Just now I read "char is the only unsigned integral primitive type in Java." Does this mean the char is one of the i...