Predefined value for float type

In this chapter you will learn:

How to find out the Maximum value and minimum value a float type can have

Maximum value and Minimum value a float type

Float class defines the following constants:

static float MAX_VALUE stores largest positive finite value of type float.
static float MIN_VALUE stores smallest positive nonzero value of type float.
static int MAX_EXPONENT stores maximum exponent a finite float variable may have.
static int MIN_EXPONENT stores minimum exponent a normalized float variable may have.
static float MIN_NORMAL stores smallest positive normal value of type float.

The following code prints out the constants listed above.

public class Main {
  public static void main(String[] args) {
    System.out.println("MAX_VALUE:"+Float.MAX_VALUE);
    System.out.println("MIN_VALUE:"+Float.MIN_VALUE);
    System.out.println("MAX_EXPONENT:"+Float.MAX_EXPONENT);
    System.out.println("MIN_EXPONENT:"+Float.MIN_EXPONENT);
    System.out.println("MIN_NORMAL:"+Float.MIN_NORMAL);
  }/* jav a  2s .  c o m*/
}

The output:

The following lists more of the constants:

static float NaN stores Not-a-Number (NaN) value of type float.
static float NEGATIVE_INFINITY stores negative infinity of type float.
static float POSITIVE_INFINITY stores positive infinity of type float.
static int SIZE stores the number of bits used to represent a float value.

The following code prints out the constants listed above.

public class Main {
  public static void main(String[] args) {
    System.out.println("NaN:"+Float.NaN);
    System.out.println("NEGATIVE_INFINITY:"+Float.NEGATIVE_INFINITY);
    System.out.println("POSITIVE_INFINITY:"+Float.POSITIVE_INFINITY);
    System.out.println("SIZE:"+Float.SIZE);
  }//from   j a  va2s  .  c  o  m
}