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  1. import java.math.BigDecimal;
  2.  
  3. class DecimalTest {
  4.  
  5. 	static int integerDigits(BigDecimal n) {
  6.     	return n.signum() == 0 ? 1 : n.precision() - n.scale();
  7. 	}
  8.  
  9. 	static void check(BigDecimal n) {
  10. 		System.out.println(n + " : " + integerDigits(n));
  11. 	}
  12.  
  13. 	static public void main(String[] args) {
  14. 		check(new BigDecimal("999999.99999"));
  15. 		check(new BigDecimal("999999.999"));
  16. 		check(new BigDecimal("999999.9"));
  17. 		check(new BigDecimal("999999"));
  18. 		check(new BigDecimal("-999999"));
  19. 		check(new BigDecimal("100"));
  20. 		check(new BigDecimal("100.000"));
  21. 		check(new BigDecimal("1234567890"));
  22. 		check(new BigDecimal("0"));
  23. 		check(new BigDecimal("0.0000"));
  24. 	}
  25. }
  26.  
Success #stdin #stdout 0.1s 320576KB
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stdin
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Standard input is empty
stdout
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999999.99999 : 6
999999.999 : 6
999999.9 : 6
999999 : 6
-999999 : 6
100 : 3
100.000 : 3
1234567890 : 10
0 : 1
0.0000 : 1
https://ideone.com/uI6iMG
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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