Java BigDecimal without E

user_1609993 0
Viewed 13414

I have a BigDecimal variable

BigDecimal x = new BigDecimal("5521.0000000001");

Formula:

x = x.add(new BigDecimal("-1")
      .multiply(x.divideToIntegralValue(new BigDecimal("1.0"))));

I want to remove the integer part, to get the value x = ("0.0000000001"), but my new value is 1E-10 and not the 0.0000000001.

bigdecimal java
4 Answers

Try using BigDecimal.toPlainString() to get value as plain string as you require.

user_74779220

If you want to do this at your BigDecimal object and not convert it into a String with a formatter you can do it on Java 8 with 2 steps:

  1. stripTrailingZeros()
  2. if scale < 0 setScale to 0 if don't like esponential/scientific notation

You can try this snippet to better understand the behaviour

BigDecimal bigDecimal = BigDecimal.valueOf(Double.parseDouble("50"));
bigDecimal = bigDecimal.setScale(2);
bigDecimal = bigDecimal.stripTrailingZeros();
if (bigDecimal.scale()<0)
bigDecimal= bigDecimal.setScale(0);
System.out.println(bigDecimal);//50
bigDecimal = BigDecimal.valueOf(Double.parseDouble("50.20"));
bigDecimal = bigDecimal.setScale(2);
bigDecimal = bigDecimal.stripTrailingZeros();
if (bigDecimal.scale()<0)
bigDecimal= bigDecimal.setScale(0);
System.out.println(bigDecimal);//50.2
bigDecimal = BigDecimal.valueOf(Double.parseDouble("50"));
bigDecimal = bigDecimal.setScale(2);
bigDecimal = bigDecimal.stripTrailingZeros();
System.out.println(bigDecimal);//5E+1
bigDecimal = BigDecimal.valueOf(Double.parseDouble("50.20"));
bigDecimal = bigDecimal.setScale(2);
bigDecimal = bigDecimal.stripTrailingZeros();
System.out.println(bigDecimal);//50.2
user_88993380
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