Basic HTML version of Foils prepared 9 Sept 1997

Foil 19 API of a Class

From Java to be used in (Scientific) Computing Part II: Java Language and Object-Oriented Concepts Basic Simulation Track for Computational Science CPS615 -- Fall Semester 97. by Nancy J. McCracken,Geoffrey C. Fox
1 Each class has an API (Application Programming Interface) consisting of all the variables and methods that other programmers (i.e. in other classes) are allowed to use. These are designated by the "public" keyword.
2 Example showing part of the Java Date class:
  • public class Date
  • { // Constructor methods to create instances of class
    • public Date();
    • public Date(int year, int month, int day);
  • // Accessor and Mutator methods to access and change data
    • public int getHours();
    • public int getYear();
    • . . .
    • public void setHours();
    • public void setYear();
    • . . .
  • // Other public methods
    • public boolean after(Date when);
    • . . . }
3 The on-line Java Hierarchy and Index shows the API's of all Java classes.
in Table To:

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