Declaring Class Addition
Line 5 begins the declaration of class Addition. The file name for this public class must be Addition.java. Remember that the body of each class declaration starts with an opening left brace (line 6) and ends with a closing right brace (line 27).
The application begins execution with the main method (lines 8–26). The left brace (line 9) marks the beginning of method main’s body, and the corresponding right brace (line 26) marks its end. Method main is indented one level in the body of class Addition, and the code in the body of main is indented another level for readability.
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