Floating­Point Types : Float « Data Type « Java Tutorial






  1. Java Tutorial
  2. Data Type
  3. Float
public class Main {
  public static void main(String[] args) {
    double pi = 3.14159;
    float f = 2.2F;
    System.out.println("pi = " + pi);
    System.out.println("f = " + f);

    int n = 15, d = 4;
    f = n / d;
    System.out.println("15/4 = " + f);
    
    int radius = 10;
    double area = pi * radius * radius;
    System.out.println("area = " + area);
  }
}








2.11.Float
2.11.1.Java float is 32 bit single precision type and used when fractional precision calculation is required.
2.11.2.Floating­Point Types
2.11.3.Min and Max values of data type float
2.11.4.Use Float constructor to convert float primitive type to a Float object.
2.11.5.Java Float Comparison
2.11.6.Java Float isInfinite Method
2.11.7.Java Float isNaN Method
2.11.8.Java Float Wrapper Class
2.11.9.Pass floats as string literals to a method
2.11.10.Check if a string is a valid number
2.11.11.Use toString method of Float class to convert Float into String.
2.11.12.Declaring a variable of type float
2.11.13.Declaring more than one float variable in a single statement
2.11.14.Use Float.valueOf to convert string value to float
2.11.15.Convert Java Float to Numeric Primitive Data Types
2.11.16.Convert Java String to Float Object
2.11.17.Convert from float to String
2.11.18.Convert from String to float
2.11.19.Converting a String to a float type Number
2.11.20.Compare Two Java float Arrays
2.11.21.Compares two floats for order.
2.11.22.For a float value x, this method returns +1.0F if x >= 0 and -1.0F if x < 0. Returns NaN if x is NaN.
2.11.23.Tests two float arrays for equality.
2.11.24.Use System.out.printf to format float point number