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Class sdsu.compare.LetterGradeComparer
java.lang.Object
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+----sdsu.compare.Comparer
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+----sdsu.compare.LetterGradeComparer
- public class LetterGradeComparer
- extends Comparer
A concrete class for comparing Letter grades
The following shows the order of the grades:
A, A-, B+, B, B-, C+, C, P, CR, C-, D+, D, D-, F, NC, W
That is A > B, etc.
All other input is considered larger than W.
- Version:
- 1.0 9 January 1998
- Author:
- Roger Whitney
(whitney@cs.sdsu.edu)
-
equals(Object, Object)
- Returns true if the leftOperand is equal to the rightOperand.
-
getInstance()
- Returns a LetterGradeComparer object.
-
greaterThan(Object, Object)
- Returns true if the leftOperand is greater than the rightOperand.
-
lessThan(Object, Object)
- Returns true if the leftOperand is less than the rightOperand.
getInstance
public static Comparer getInstance()
- Returns a LetterGradeComparer object.
lessThan
public final boolean lessThan(Object leftOperand,
Object rightOperand) throws ClassCastException
- Returns true if the leftOperand is less than the rightOperand.
- Throws: ClassCastException
- If operand objects are not strings.
ClassCastException is a RuntimeException, so compiler does not
force you to catch this exception.
- Overrides:
- lessThan in class Comparer
greaterThan
public final boolean greaterThan(Object leftOperand,
Object rightOperand) throws ClassCastException
- Returns true if the leftOperand is greater than the rightOperand.
- Throws: ClassCastException
- If operand objects are not strings objects.
ClassCastException is a RuntimeException, so compiler does not force you
to catch this exception.
- Overrides:
- greaterThan in class Comparer
equals
public final boolean equals(Object leftOperand,
Object rightOperand) throws ClassCastException
- Returns true if the leftOperand is equal to the rightOperand.
- Throws: ClassCastException
- If operand objects are not Number objects.
ClassCastException is a RuntimeException, so compiler does not force you
to catch this exception.
- Overrides:
- equals in class Comparer
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