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POThrowing exceptions of different classes within a sane method
 

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  1. POThrowing exceptions of different classes within a sane method
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    <pre><code>abstract class CustomException extends Exception { abstract public String toString(); abstract public String getMessage(); } interface SimpleInterestCalculator { public void setPrincipalAmount(int principalAmount) throws CustomException; public int getPrincipalAmount(); public void setRateOfInterest(int rateOfInterest) throws CustomException; public int getRateOfInterest(); public void setTime(int Time) throws CustomException; public int getTime(); public int getSimpleInterest(); } interface CompoundInterestCalculator { public void setPrincipalAmount(int principalAmount) throws CustomException; public int getPrincipalAmount(); public void setRateOfInterest(int rateOfInterest) throws CustomException; public int getRateOfInterest(); public void setTime(int Time) throws CustomException; public int getTime(); public int getCompoundInterest(); } class SimpleInterestCalculationException extends CustomException { String message; SimpleInterestCalculationException(String message) { this.message = message; } SimpleInterestCalculationException() { this.message = null; } public String toString() { if (this.message == null) { return "Simple Interest Calculation Exception"; } else { return "Simple Interest Calculation Exception : " + this.message; } } public String getMessage() { return this.message; } } class CompoundInterestCalculationException extends CustomException { String message; CompoundInterestCalculationException(String message) { this.message = message; } CompoundInterestCalculationException() { this.message = null; } public String toString() { if (this.message == null) { return "Compound Interest Calculation Exception"; } else { return "Compound Interest Calculation Exception : " + this.message; } } public String getMessage() { return this.message; } } class InterestCalculator implements SimpleInterestCalculator, CompoundInterestCalculator { private int principalAmount, rateOfInterest, time; InterestCalculator() { this.principalAmount = 0; this.rateOfInterest = 0; this.time = 0; } InterestCalculator(int principalAmount, int rateOfInterest, int time) { this.principalAmount = principalAmount; this.rateOfInterest = rateOfInterest; this.time = time; } public void setPrincipalAmount(int principalAmount) throws SimpleInterestCalculationException { if (principalAmount &lt; 0) { throw new SimpleInterestCalculationException("Principal Amount Cannot be Negative"); } if (principalAmount == 0) { throw new SimpleInterestCalculationException("Principal Amount Cannot be Zero"); } this.principalAmount = principalAmount; } public int getPrincipalAmount() { return this.principalAmount; } public void setRateOfInterest(int rateOfInterest) throws SimpleInterestCalculationException { if (rateOfInterest &lt; 0) { throw new SimpleInterestCalculationException("Rate Of Interest Cannot be Negative"); } if (rateOfInterest == 0) { throw new SimpleInterestCalculationException("Rate Of Interest Cannot be Zero"); } this.rateOfInterest = rateOfInterest; } public int getRateOfInterest() { return this.rateOfInterest; } public void setTime(int time) throws SimpleInterestCalculationException { if (time &lt; 0) { throw new SimpleInterestCalculationException("Time Cannot be Negative"); } if (time == 0) { throw new SimpleInterestCalculationException("Time Cannot be Zero"); } this.time = time; } public int getTime() { return this.time; } public int getSimpleInterest() { return (this.principalAmount * this.rateOfInterest * this.time) / 100; } public int getCompoundInterest() { int x, y, z; x = (this.rateOfInterest / 100) + 1; y = this.time; z = 1; while (y &gt; 0) { z = z * x; y--; } z = z * this.principalAmount; return z; } } class calculatepsp { public static void main(String gg[]) { InterestCalculator simpleInterest = new InterestCalculator(); InterestCalculator compoundInterest = new InterestCalculator(); try { simpleInterest.setPrincipalAmount(-100); simpleInterest.setRateOfInterest(5); simpleInterest.setTime(2); int simpleinterest = interestCalculator.getSimpleInterest(); System.out.println("Simple Interest : " + simpleinterest); compoundInterest.setPrincipalAmount(1000); compoundInterest.setRateOfInterest(-8); compoundInterest.setTime(4); int compoundinterest = interestCalculator.getCompoundInterest(); System.out.println("Compound Interest : " + compoundinterest); } catch (SimpleInterestCalculationException sice) { System.out.println(sice); } catch (CompoundInterestCalculationException cice) { System.out.println(cice); } } } </code></pre> <p>I want to throw the exception of the class, if i am calculating simple interest then it should be SimpleInterestCalculationException and if i am calculating compound interest then it should be CompundInterestCalculationException.<br> Please Help Regarding this. </p>
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    1. USPhilipp Sander
    1. USUdit Seth
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      1. VTDownMod
    2. VO
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    1. COTook two min to come here :P That's lots of code dude.
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      1. USꜱᴜʀᴇꜱʜ ᴀᴛᴛᴀ
    2. COPlease only post the code that is relevant to the problem, unless requested
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      1. USAbubakkar
    3. COAnd then format it. And then explain *why* you think it's a good idea to have two different exception types here.
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      1. POThrowing exceptions of different classes within a sane method
      1. USJon Skeet
 

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