Double Data Types
The double data type represents a 64-bit IEEE 754 floating-point number and is generally used as the default data type for decimal values.
Typically, double is the default choice for floating-point calculations.
However, the double data type should not be used for precise values such as currency.
The default value of a double variable is 0.0d.
Syntax:
Source Code:
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public class DoubleZeroExample {
public static void main(String[] args) {
// Declare double variables, including 0.0d
double num1 = 10.0d;
double num2 = 5.0d;
double num3 = 0.0d; // Explicitly using 0.0d
double result;
// Performing arithmetic operations
result = num1 / num2; // Division
System.out.println("Result of num1 / num2: " + result); // Should print 2.0
result = num1 / num3; // Division by 0.0d (will produce NaN)
System.out.println("Result of num1 / num3 (division by zero): " + result);
// Check if num3 is zero
if (num3 == 0.0d) {
System.out.println("num3 is exactly 0.0d.");
}
// Performing multiplication by 0.0d
double product = num2 * num3;
System.out.println("Result of num2 * num3: " + product); // Should print 0.0
// Adding 0.0d to another number
double sum = num1 + num3;
System.out.println("Result of num1 + num3: " + sum); // Should print 10.0
}
}Result:
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