How do I print a double value without scientific notation using Java?

######").format(value));

This command will print out **`1234.56`**, using the provided format and omitting scientific notation. Customize the format pattern `"0.######"` according to the precision you require.

## Fine-tuning double formatting

### Employing DecimalFormat for precision control

If you need to set an exact number of **decimal places** while printing double values, `DecimalFormat` is the tool to use:

```java
double pi = Math.PI; 
DecimalFormat decimalFormat = new DecimalFormat("#.00000"); 
System.out.println(decimalFormat.format(pi)); //Slices Up Pi: 3.14159

When presenting data across various locales, DecimalFormat can be attuned to considerations of locale:

DecimalFormatSymbols symbols = new DecimalFormatSymbols(Locale.ENGLISH); 
decimalFormat.setDecimalFormatSymbols(symbols); //Channeling some inner English
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Exercising BigDecimal for extreme numbers

For very large or small numbers, BigDecimal becomes super handy. Its toPlainString() method eliminates scientific notation:

double value = 0.00000000002;
BigDecimal bigDecimal = new BigDecimal(String.valueOf(value)); 
System.out.println(bigDecimal.toPlainString());  //Infinity War Avenger: 0.00000000002


For maintaining accuracy, create BigDecimal instances from a String version of the double, not the double itself:

double value = 0.0000003;
BigDecimal exactBigDecimal = new BigDecimal(Double.toString(value)); 
System.out.println(exactBigDecimal.toPlainString()); //Not the droid you're looking for: 0.0000003


Controlling precision using printf

For folks who prefer printf for formatting, Java provides an easy method to regulate the precision:

double value = 3.14159;
System.out.printf("%.2f", value); //Just two decimals, because who needs accuracy?


To specify the number of digits after the decimal point, simply change the .2 in %.2f.

#####"); System.out.println(formatter.format(123456.789)); // Precision nailing: 123456.789

System.out.println(String.format("%.5f", 123456.789)); // Math Attack: 123456.78900

**No** rocket science, just **running** with precision!

## Advanced double formatting techniques

### Tackling special cases

Before converting a **double** to a string using `println`, ensure you catch special floating-point values:

```java
double notANumber = Double.NaN;
double infinity = Double.POSITIVE_INFINITY;
if (Double.isNaN(notANumber) || Double.isInfinite(infinity)) {
    System.out.println("Hold your unicorns! We've got a special one here.");
}

Considering locale effects on DecimalFormat

While using DecimalFormat, remain cognizant of your locale as formats can differ:

DecimalFormat decimalFormat = new DecimalFormat("#.00");
decimalFormat.setDecimalFormatSymbols(new DecimalFormatSymbols(Locale.FRENCH));
System.out.println(decimalFormat.format(123456.789)); // Bonjour, comma: 123 456,79!
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Navigating through double's precision capability

Even though double is an excellent datatype for floating-point arithmetic, it has its limits and may not hold the exact value due to binary representation:

System.out.println(0.1 + 0.2); // Math is hard: 0.30000000000000004
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When precision is crucial, consider using BigDecimal.