Building Applications with Spring 5 and Vue.js 2

Scope and closure

Scope is about the accessibility of variables. In Java, basically, a set of curly brackets {} defines a scope, including class-level scope, method-level scope, and block-level scope. 

Let's take a look at the following example in Java:

1.  public class User { 2.    private String name; 3.    private List<String> interests; 4.   5.    public User (String name, List<String> interests) {6.      this.name = name;7.      this.interests = interests;8.    }9. 10.   // Check if a user is interested in something11.   public boolean isInterestedIn(String something) {12.     boolean interested = false;13.     for (int i = 0; i < interests.size(); i++) {14.       if (interests.get(i).equals(something)) {15.         interested = true;16.         break;17.       } 18.     } 19.     return interested; ...