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- You need to implement Fraction class which is within package PJ1
See PJ1/Fraction.java and PJ1/FractionInterface.java for specifications
- Run programs
// Run 20 test cases in Fraction class
PJ1.Fraction
// Run general test program
PJ1_Test
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Sample Runs
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=> java PJ1.Fraction
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1. Set fraction is 20/-35
Expected result : 20/-35
2. Simplify fraction is 20/-35 -4/7
Expected result : 20/-35 -4/7
3. Simplify fraction is -51/-36 17/12
Expected result : -51/-36 17/12
4. Simplify fraction is 250/-35 -50/7
Expected result : 250/-35 -50/7
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5. The sum of 7/8 and 9/16 is 23/16
Expected result : 23/16
6. The difference of 9/16 and 7/8 is -5/16
Expected result : -5/16
7. The product of 15/-2 and 1/4 is -15/8
Expected result : -15/8
8. The quotient of -21/2 and 3/7 is -49/2
Expected result : -49/2
9. The sum of -21/2 and -7/-8 is -77/8
Expected result : -77/8
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10. The double floating point value of 0/10 is 0.0
Expected result 0.0
11. The double floating point value of 1/-3 is -0.3333333333333333
Expected result -0.333333333...
12. The double floating point value of -15/-6 is 2.5
Expected result 2.5
First = -21/2
13. check First equals First:
Identity of fractions OK
First = -21/2
Second = 42/-4
14. check First equals Second:
Equality of fractions OK: equal
First = -21/2
Second = -42/-4
15. check First equals Second:
Equality of fractions OK: not equal
First = -21/2
Second = 42/-4
16. check First compareTo Second:
Fractions == operator OK
First = -21/2
Second = 7/8
17. check First compareTo Second:
Fractions < operator OK
First = -21/2
Second = 7/8
18. check Second compareTo First:
Fractions > operator OK
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19. check FractionException: 1/0
Exception: PJ1.FractionException: Denominator is 0
Expected result : FractionException!
20. check FractionException: division
Exception: PJ1.FractionException: Divisor is 0
Expected result : FractionException!
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$ java PJ1_Test
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Operations:
0) exit
1) add 2) subtract 3) multiply 4) divide 5) compareTo
6) equals 7) simplify 8) toDouble 9) setFraction
Enter an operation number: 9
Tests:
read a fraction x/y, please enter x y : -20 -10
-20/-10 setFraction = -20/-10
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Operations:
0) exit
1) add 2) subtract 3) multiply 4) divide 5) compareTo
6) equals 7) simplify 8) toDouble 9) setFraction
Enter an operation number: 3
Try to read a fraction x/y, please enter x y : 5 -10
Read OK:5/-10
Try to read a fraction x/y, please enter x y : -1 -2
Read OK:-1/-2
Tests:
5/-10 * 5/-10 = 1/4
-1/-2 * -1/-2 = 1/4
5/-10 * -1/-2 = -1/4
-1/-2 * 5/-10 = -1/4
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Operations:
0) exit
1) add 2) subtract 3) multiply 4) divide 5) compareTo
6) equals 7) simplify 8) toDouble 9) setFraction
Enter an operation number: 7
Try to read a fraction x/y, please enter x y : -10 -20
Read OK:-10/-20
Tests:
-10/-20 simplify= 1/2
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Operations:
0) exit
1) add 2) subtract 3) multiply 4) divide 5) compareTo
6) equals 7) simplify 8) toDouble 9) setFraction
Enter an operation number: 1
Try to read a fraction x/y, please enter x y : -5 -10
Read OK:-5/-10
Try to read a fraction x/y, please enter x y : 7 -3
Read OK:7/-3
Tests:
-5/-10 + -5/-10 = 1/1
7/-3 + 7/-3 = -14/3
-5/-10 + 7/-3 = -11/6
7/-3 + -5/-10 = -11/6
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Operations:
0) exit
1) add 2) subtract 3) multiply 4) divide 5) compareTo
6) equals 7) simplify 8) toDouble 9) setFraction
Enter an operation number: 0Editor is loading...