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  1. import java.math.BigDecimal;
  2.  
  3. class Main
  4. {
  5.   public static void main (String[] args) throws java.lang.Exception
  6.   {
  7.      BigDecimal z = new BigDecimal("0.00");
  8.      BigDecimal z2 = null;
  9.  
  10.      // Wrong
  11.      System.out.println(z == new BigDecimal(0));
  12.      System.out.println(z == BigDecimal.ZERO);
  13.  
  14.      // Wrong too!
  15.      System.out.println(BigDecimal.ZERO.equals(z));
  16.  
  17.      // Correct
  18.      System.out.println(z.signum() == 0);
  19.   }
  20. }
Success #stdin #stdout 0.03s 245632KB
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stdin
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Standard input is empty
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false
false
false
true
https://ideone.com/i0UAo4
language:
Java (HotSpot 12)
created:
13 years ago
visibility:
public

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