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POSimple Java homework
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7343874
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2011-09-08T06:17:10.740
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2018-01-18T18:50:34.413
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2012-09-14T18:21:46.800
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1
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347
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text
Body
<p>So I'm a java newby and I'm doing this homework assignment that asks me to write a program to find the first four perfect numbers. I think I have everything roughly correct, though I am unable to test my program due to an error message that reads 'Exception in thread "main" javva.lang.NoSuchMethodError: main' when I try to run my program. It compiled fine and I think all the math is right:</p> <pre><code>import java.awt.*; public class PerfectNumbers { int num = 1, divisor1 = 1, divisor2, divSum, perfNum1, perfNum2, perfNum3, perfNum4; public void main() { do { while (num != divSum) { if (num % divisor1 == 0 && divisor1 != Math.sqrt(num)) { divSum += divisor1; divisor2 = num / divisor1; divSum += divisor2; divisor1++; } else if (num % divisor1 !=0 && divisor1 != Math.sqrt(num)) divisor1++; else if (divisor1 == Math.sqrt(num)) { divSum += Math.sqrt(num); divisor1 = 1; } } if (num == divSum && perfNum1 == 0) { perfNum1 = num; num++; divSum = 0; } else if (num == divSum && perfNum2 == 0) { perfNum2 = num; num++; divSum = 0; } else if (num == divSum && perfNum3 == 0) { perfNum3 = num; num++; divSum = 0; } else if (num == divSum && perfNum4 == 0) { perfNum4 = num; break; } } while (perfNum4 == 0); if (perfNum4 == 0) System.out.print("The first four perfect numbers are " + perfNum1 + ", " + perfNum2 + ", " + perfNum3 + ", " + perfNum4 + "."); } } </code></pre> <p>P.S. any advice on newb mistakes on syntax or style would be greatly appreciated!</p>
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<java><math>
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Simple Java homework
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1. COcode was corrected in the edit several times, most answers seem to be off/wrong now
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