How to find index of STRING array in Java from a given value?

I wanted to know if there’s a native method in array for Java to get the index of the table for a given value ? Let’s say my table contains these strings : public static final String[] TYPES = { “Sedan”, “Compact”, “Roadster”, “Minivan”, “SUV”, “Convertible”, “Cargo”, “Others” }; Let’s say the user has to … Read more

Composition, Inheritance, and Aggregation in JavaScript

There is a lot of information about composition vs inheritance online, but I haven’t found decent examples with JavaScript. Using the below code to demonstrate inheritance: function Stock( /* object with stock names and prices */ ) { for (var company_name in arguments[0]) { // copy the passed object into the new object created by … Read more

Distinguishing between delegation, composition and aggregation (Java OO Design)

I am facing a continuing problem distinguishing delegation, composition and aggregation from each other, and identifying the cases where it’s the best to use one over the other. I have consulted a Java OO Analysis and Design book, but my confusion still remains. The main explanation is this: Delegation: When my object uses another object’s … Read more

Why use inheritance at all? [closed]

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for … Read more

How to force node position (x and y) in graphviz

I am trying to force position of nodes. I have x and y coordinates of my nodes and its also directed graph. I can use the rank=same to handle row (y coordinate), but can’t figure out how I can handle column (x coordinate). Answer You can use pos attribute (, e.g.: xxx [ label = … Read more