java float precision

In Java, the float data type is a single-precision, 32-bit floating-point data type that represents decimal values with a range of approximately 1.4E-45 to 3.4E+38. The precision of the float data type is about 7 decimal digits, which means that it can represent decimal values with up to 7 digits of precision.

Here's an example of how the float data type can affect the precision of decimal values:

public class Main {
  public static void main(String[] args) {
    float value1 = 0.123456789f;  // The "f" suffix indicates that the value is a float
    double value2 = 0.123456789;  // The default data type for decimal values is double
    System.out.println(value1);  // prints "0.12345679"
    System.out.println(value2);  // prints "0.123456789"
  }
}

In this example, the value 0.123456789 is assigned to a float variable and a double variable. When the float variable is printed, the value is rounded to 7 decimal digits, while the double variable retains the full precision of the original value.

Note that the precision of the float data type may vary depending on the specific value being represented. Some values may have less precision than 7 digits, while others may have more.

If you need to represent decimal values with greater precision, you can use the double data type, which is a double-precision, 64-bit floating-point data type with a precision