I want to represent an empty character in Java as “” in String… Like that char ch = an empty character; Actually I want to replace a character without leaving space. I think it might be sufficient to understand what this means: no character not even space.
Use the ternary operator: I think you have the conditions backwards – if it’s null, you want the value to be “N/A”. What if city is null? Your code *hits the bed in that case. I’d add another check:
Firstly, you can’t do new List(); it is an interface. To make a list of int Arrays, do something like this : P.S. As per the comment, package for List is java.util.List and for ArrayList java.util.ArrayList
You can do OR If you were to call System.out.println(answer); the output would be 2
You can’t resize an array in Java. You’d need to either: Create a new array of the desired size, and copy the contents from the original array to the new array, using java.lang.System.arraycopy(…); Use the java.util.ArrayList<T> class, which does this for you when you need to make the array bigger. It nicely encapsulates what you describe in your … Read more
It might be because the project has been broken down into different modules.
Others have pointed out the deleteCharAt method, but here’s another alternative approach: Alternatively, use the Joiner class from Guava 🙂 As of Java 8, StringJoiner is part of the standard JRE.
As other people have pointed out, it is most likely related to another process using port 9999. On Windows, run the command: And it should list anything there that’s hogging the port. Of course you’ll then have to go and manually kill those programs in Task Manager. If this still doesn’t work, replace the line: With: … Read more
Check the Java API for List.The get(int index) method is declared to throw only the IndexOutOfBoundException which extends RuntimeException.You are trying to tell Mockito to throw an exception SomeException() that is not valid to be thrown by that particular method call. To clarify further.The List interface does not provide for a checked Exception to be thrown from the get(int index) method and that is why Mockito is failing.When … Read more