Facing a problem with a practice app I’m working on. I’m facing a NullPointerException problem relating to the toString method. Being new to android app development, I’m unsure of the exact cause even after my research into this. Hence I ask for someone who is more familiar with the stack tr…
Tag: tostring
How have RecursiveToStringStyle and JSON_STYLE using commons-lang3
I’m using the dependency: I have the following objects: And I need to log the content of the class X recursively to get the class Y as well and using the JSON style. That is my goal and this is the purpose of this question. Approach 1: Approach 1 result: Approach 2: Approach 2 result: Successful Approac…
toString() representation output
I have a bug in the code and believe me I’ve run debugging many times to find what’s wrong with code but cannot understand what is wrong. I have to output the contents of 2d Arraylist. For example, if I do: it outputs me the following: But when I change the fourth value, 3, to higher number, for e…
How do you write a toString() method for an int array for object oriented programming?
How do you write an toString() method for an int array? Say to return the string representation of a 52 card pack? Here is an example array as part of a class: This is being done in an object oriented manner. How would a toString() method be written in this case in order to return a string representation of t…
Eclipse autogenerated toString() method
As par as I know concatinate String using + sign is not a good practice when you have large number of String. But when I check on eclipse generated toString() method (Write click on source file -> Source -> Generate toString() ) it has the same. Is there any place to configure like my expected toString(…
How To Print String representation of Color in Java
I have an array of colours of size n. In my program, the number of teams is always <= n, and I need to assign each team a unique color. This is my color array: When I print information about the players in the console, I want to print what color is associated with them. When I print the color,
What is this: [Ljava.lang.Object;?
I get this when I call toString on an object I received from a function call. I know the type of the object is encoded in this string, but I don’t know how to read it. What is this type of encoding called? Answer [Ljava.lang.Object; is the name for Object[].class, the java.lang.Class representing the cl…