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The AP Java Subset: Summary Table of Language Features
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A summary table is provided that outlines the features that are tested
on the A and AB exams, the AB exam only, and those features that are
useful but are not tested on either exam.
| Tested in A, AB exam |
Tested in AB exam only |
Potentially relevant to CS1/CS2 course but not tested |
| int, double, boolean |
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short, long, byte, char, float |
| + , -, *, /, %, ++, -- |
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Using the values of ++, -- expressions in other expressions |
| =, +=, -=, *=, /=, %= |
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| ==, !=, <, <=, >, >= |
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| &&, ||, ! and short-circuit evaluation |
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<<, >>, >>>, &, ~, |, ^, ?: |
| (int), (double) |
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Other numeric casts such as (char) or (float) |
| String concatenation |
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StringBuffer |
| Escape sequences \", \\, \n inside strings |
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Other escape sequences (\', \t, \unnnn) |
| System.out.print, System.out.println |
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System.in, Stream input/output, GUI input/output, parsing input, formatted output |
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public static void main(String[] args) |
| 1-dimensional arrays |
2-dimensional rectangular arrays |
Arrays with 3 or more dimensions, ragged arrays |
| if, if/else, while, for, return |
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do/while, switch, break, continue |
| Modify existing classes, design classes |
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| public classes, private instance variables, public or private methods or constants |
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protected or package visibility |
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javadoc |
| static final class variables |
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final local variables, final parameters, final instance variables, final methods, final classes |
| static methods |
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static non-final variables |
| null, this, super, super.method(args) |
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this.var,
this.method(args),
this(args) |
| Constructors and initialization of static variables |
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Default initialization of instance variables, initialization blocks |
| Understand
inheritance hierarchies. Design and implement subclasses. Modify
subclass implementations and implementations of interfaces. |
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| Understand the concepts of abstract classes and interfaces. Design an interface. |
Design and implement abstract classes |
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Understand equals, ==, and != comparison of objects
Comparable.compareTo |
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clone, implementation of equals |
| Conversion to supertypes and (Subtype) casts |
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instanceof |
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Nested classes,inner classes |
| Package concept, import packageName.ClassName; |
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import x.y.*, defining packages, class path |
| Exception concept, common exceptions, |
Throwing standard unchecked exceptions |
Checked exceptions try/catch/finally, throws |
| String, Math, Random, Object, ArrayList |
Comparable, List, Set, Map, Iterator, ListIterator, LinkedList, HashSet, TreeSet, HashMap, TreeMap |
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| Wrapper classes (Integer, Double) |
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Sorting methods in Arrays and Collections |
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