How to get the part after the decimal point in Java?

How to get the part after the decimal point in Java?

In Java, if you have a floating-point number or a double and you want to extract the part after the decimal point, you can use simple mathematical operations or convert the number to a string and then extract the decimal part. Here are both approaches:

Using Mathematical Operations:

public class DecimalPartExample { public static void main(String[] args) { double number = 123.456; // Extract the part after the decimal point using mathematical operations double decimalPart = number - Math.floor(number); System.out.println("Original Number: " + number); System.out.println("Decimal Part: " + decimalPart); } }

Using String Conversion:

public class DecimalPartExample { public static void main(String[] args) { double number = 123.456; // Convert the number to a string String numberAsString = Double.toString(number); // Extract the part after the decimal point using string manipulation String decimalPartAsString = numberAsString.split("\\.")[1]; // Convert the decimal part back to a double if needed double decimalPart = Double.parseDouble("0." + decimalPartAsString); System.out.println("Original Number: " + number); System.out.println("Decimal Part: " + decimalPart); } }

In the second example, numberAsString.split("\\.")[1] is used to split the string representation of the number using the decimal point as a delimiter, and then the second part of the resulting array contains the decimal part. This approach might be less efficient than the first one, especially if you're dealing with performance-critical code.

Choose the method that suits your specific requirements and performance considerations.

Examples

  1. "Java extract decimal part of a double"

    • Description: General search for extracting the part after the decimal point in a double value in Java.
    • Code:
      double number = 123.456; double decimalPart = number % 1;

  2. "Java get decimal part of a float"

    • Description: Searches for obtaining the decimal part of a float in Java.
    • Code:
      float number = 789.123f; float decimalPart = number % 1;

  3. "Java extract decimal part of a BigDecimal"

    • Description: Focuses on extracting the decimal part of a BigDecimal in Java.
    • Code:
      BigDecimal decimalNumber = new BigDecimal("456.789"); BigDecimal decimalPart = decimalNumber.remainder(BigDecimal.ONE);

  4. "Java get fraction part of a double"

    • Description: Investigates getting the fraction part (part after the decimal point) of a double in Java.
    • Code:
      double number = 987.654; double fractionPart = number - (int) number;

  5. "Java extract decimal part using String manipulation"

    • Description: Looks into extracting the decimal part using String manipulation in Java.
    • Code:
      double number = 234.567; String decimalPartStr = Double.toString(number).split("\\.")[1]; double decimalPart = Double.parseDouble("0." + decimalPartStr);

  6. "Java get fractional part using Math.floorMod"

    • Description: Searches for using Math.floorMod to obtain the fractional part of a double in Java.
    • Code:
      double number = 345.678; double fractionalPart = Math.floorMod(number, 1.0);

  7. "Java extract decimal part using DecimalFormat"

    • Description: Investigates using DecimalFormat to extract the decimal part in Java.
    • Code:
      double number = 567.890; DecimalFormat decimalFormat = new DecimalFormat("#.######"); double decimalPart = Double.parseDouble(decimalFormat.format(number));

  8. "Java get decimal part using BigDecimal remainder"

    • Description: Focuses on using remainder method of BigDecimal to get the decimal part in Java.
    • Code:
      BigDecimal decimalNumber = new BigDecimal("123.456"); BigDecimal decimalPart = decimalNumber.remainder(BigDecimal.ONE);

  9. "Java extract decimal part with String format"

    • Description: Searches for extracting the decimal part using String format in Java.
    • Code:
      double number = 789.012; String decimalPartStr = String.format("%.6f", number).split("\\.")[1]; double decimalPart = Double.parseDouble("0." + decimalPartStr);

  10. "Java get decimal part using StringTokenizer"

    • Description: Investigates using StringTokenizer to get the decimal part in Java.
    • Code:
      double number = 123.456; StringTokenizer tokenizer = new StringTokenizer(Double.toString(number), "."); tokenizer.nextToken(); double decimalPart = Double.parseDouble("0." + tokenizer.nextToken());

More Tags

win32-process azure-cli2 desktop patindex dagger-2 applet multi-module exif web-mediarecorder ssh-keys

More Programming Questions

More Housing Building Calculators

More General chemistry Calculators

More Livestock Calculators

More Pregnancy Calculators