java - Format BigDecimal without scientific notation with full precision

Java - Format BigDecimal without scientific notation with full precision

If you want to format a BigDecimal without scientific notation and with full precision in Java, you can use the DecimalFormat class. Here's an example:

import java.math.BigDecimal; import java.text.DecimalFormat; public class FormatBigDecimal { public static void main(String[] args) { // Create a BigDecimal with a value BigDecimal bigDecimalValue = new BigDecimal("12345678901234567890.12345678901234567890"); // Format the BigDecimal without scientific notation String formattedValue = formatBigDecimal(bigDecimalValue); System.out.println("Formatted BigDecimal: " + formattedValue); } private static String formatBigDecimal(BigDecimal value) { // Create a DecimalFormat instance DecimalFormat decimalFormat = new DecimalFormat("#.##############################################"); // Format the BigDecimal without scientific notation return decimalFormat.format(value); } }

In this example:

  • BigDecimal is created with a specific value.
  • The formatBigDecimal method takes a BigDecimal and uses a DecimalFormat instance to format the value without scientific notation.
  • The #.############################################## pattern in the DecimalFormat specifies that you want to display the decimal part with as many digits as necessary.

Adjust the number of # symbols according to the precision you need. This example provides a large number of # symbols to accommodate a high precision.

Examples

  1. "Java format BigDecimal to string without scientific notation"

    • Code Implementation:
      BigDecimal number = new BigDecimal("12345678901234567890.123456789"); String formatted = number.toPlainString(); System.out.println("Formatted: " + formatted);
    • Description: Use toPlainString() method to convert BigDecimal to a string without scientific notation.

  2. "Java BigDecimal toString with full precision"

    • Code Implementation:
      BigDecimal number = new BigDecimal("98765432109876543210.987654321"); String formatted = number.setScale(number.scale(), RoundingMode.UNNECESSARY).toString(); System.out.println("Formatted: " + formatted);
    • Description: Set the scale to the current scale and use toString() for full precision without scientific notation.

  3. "Java BigDecimal setScale to maximum precision"

    • Code Implementation:
      BigDecimal number = new BigDecimal("12345678901234567890.123456789"); number = number.setScale(Integer.MAX_VALUE, RoundingMode.UNNECESSARY); String formatted = number.stripTrailingZeros().toString(); System.out.println("Formatted: " + formatted);
    • Description: Set the scale to Integer.MAX_VALUE and remove trailing zeros for maximum precision without scientific notation.

  4. "Java BigDecimal toEngineeringString for full precision"

    • Code Implementation:
      BigDecimal number = new BigDecimal("98765432109876543210.987654321"); String formatted = number.toEngineeringString(); System.out.println("Formatted: " + formatted);
    • Description: Use toEngineeringString() to format BigDecimal with full precision and without scientific notation.

  5. "Java BigDecimal setScale with precision"

    • Code Implementation:
      BigDecimal number = new BigDecimal("12345678901234567890.123456789"); number = number.setScale(20, RoundingMode.UNNECESSARY); String formatted = number.stripTrailingZeros().toString(); System.out.println("Formatted: " + formatted);
    • Description: Set the scale to a specific precision and remove trailing zeros for a formatted string.

  6. "Java BigDecimal toPlainString without exponent"

    • Code Implementation:
      BigDecimal number = new BigDecimal("98765432109876543210.987654321"); String formatted = number.setScale(number.scale(), RoundingMode.UNNECESSARY).toPlainString(); System.out.println("Formatted: " + formatted);
    • Description: Combine setScale() with toPlainString() for a formatted string without scientific notation.

  7. "Java BigDecimal setScale with scale and precision"

    • Code Implementation:
      BigDecimal number = new BigDecimal("12345678901234567890.123456789"); number = number.setScale(20, RoundingMode.UNNECESSARY).stripTrailingZeros(); String formatted = number.toString(); System.out.println("Formatted: " + formatted);
    • Description: Set both scale and precision using setScale() and stripTrailingZeros() for a formatted string.

  8. "Java BigDecimal format with DecimalFormat"

    • Code Implementation:
      BigDecimal number = new BigDecimal("98765432109876543210.987654321"); DecimalFormat decimalFormat = new DecimalFormat("#.############################################"); String formatted = decimalFormat.format(number); System.out.println("Formatted: " + formatted);
    • Description: Use DecimalFormat with a pattern to format BigDecimal without scientific notation and full precision.

  9. "Java BigDecimal toBigIntegerExact without exponent"

    • Code Implementation:
      BigDecimal number = new BigDecimal("98765432109876543210.987654321"); String formatted = number.toBigIntegerExact().toString(); System.out.println("Formatted: " + formatted);
    • Description: Convert BigDecimal to BigInteger using toBigIntegerExact() and then convert to a string without scientific notation.

  10. "Java BigDecimal stripTrailingZeros with toPlainString"

    • Code Implementation:
      BigDecimal number = new BigDecimal("12345678901234567890.123456789"); String formatted = number.stripTrailingZeros().toPlainString(); System.out.println("Formatted: " + formatted);
    • Description: Use stripTrailingZeros() followed by toPlainString() for a formatted string without trailing zeros and scientific notation.

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