CSC 216 Lecture Notes - Lecture 14: Array Data Structure, The Queue, Linked Data

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17 Oct 2016
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*** note: these notes are incomplete due to illness, which caused me to miss part of class. Drawingpanel pane12 = pane11; //same window pane12. setbackground(color. cyan); //sets both pane11 and pane12 to cyan. It(cid:859)s (cid:374)ota(cid:271)le that o(cid:271)je(cid:272)ts (cid:272)a(cid:374) store refere(cid:374)(cid:272)es to other o(cid:271)je(cid:272)ts as fields. These are the variables you put at the beginning of the class, like the string name in book: powerpoint examples: Htmlvalidator stores a reference to a queue. The queue stores many references to htmltag objects. Each htmltag object stores a reference to its element string. Null: a value that does not refer to any object; any unset reference fields of an object are initialized to null: example: Given this code, if you were to look into the timmy object you would see that name = null, and id = 0: things you can do with null: Store null in a variable or an array element. String s = null; words[2] = null;

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