Imagine that we’re using a program to keep track of the prices of different clothing items we want to buy. We would want a list of the prices and a list of the items they correspond to. To create an array, we provide a name and declare the type of data it holds:
Just like with variables, we can declare and initialize in the same line. This allows us to explicitly initialize the array to contain the data we want to store :
We can use arrays to hold Strings and other objects as well as primitives:
Instructions
We have an empty Newsfeed class that does not store anything yet.
First, make a method called getTopics(), which:
- is
public - returns a
Stringarray - does not take any parameters
For now, leave the method empty.
Inside the getTopics() method, create a String array called topics and set it equal to an array containing these elements, in order:
Then, return topics from the method!
Uncomment the lines in the main method to see how the getTopics() method works on a Newsfeed instance.