Java Float isFinite() method with Examples

by Online Tutorials Library July 22, 2022

Java Float isFinite() Method

The isFinite() method of Java Float class returns a Boolean value for the specified float object f. This method returns true if the argument passed is a finite floating-point number else returns false for NaN and infinity arguments.

Syntax:

Parameters:

The parameter passed is ‘f’ which is of float type.

Return Value:

This method returns a Boolean value for this float object.

Returns true, if the argument passed is finite floating-point number.
Returns false, if the arguments passed is Nan or infinity.

Example 1

  public class FloatIsFiniteExample1 {      public static void main(String[] args) {          float f1 = 578648.67f;          Float f2 = new Float(f1/0);           if(Float.isFinite(f2)){               System.out.println(“Value returned is : ” +Float.isFinite(f2));           }           else{               System.out.println(“Value returned is : “+Float.isFinite(f2));           }      }    }  

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Output:

Value returned is: false

Example 2

  public class FloatIsFiniteExample2 {      public static void main(String[] args) {          // will return true          Float f1 = new Float(0X7f800000);          System.out.println(“Returned result = “+Float.isFinite(f1));          //will return true          Float f2 =new Float(76E-43);          System.out.println(“Returned result = “+Float.isFinite(f2));          //will return false          Float f3 =new Float(f1/0);          System.out.println(“Returned result = “+Float.isFinite(f3));          //will return false         Float f4 =new Float(-f1/0);          System.out.println(“Returned result = “+Float.isFinite(f4));                }  }  

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Output:

Returned result = true  Returned result = true  Returned result = false  Returned result = false

Example 3

  public class FloatIsFiniteExample3 {      public static void main(String[] args) {          float f1 =687f;          Float f2 = new Float(f1);          boolean val=f1.isFinite(f2);          System.out.println(val);        }  }  

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Output:

Error:(7, 23) java: float cannot be dereferenced

Here, float is a primitive data type. We cannot use its object to call Float class methods. Also isFinite() is a static method so, it should be called with the class name i.e. Float

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Java Float isFinite() method with Examples

Java Float isFinite() Method

Syntax:

Parameters:

Return Value:

Example 1

Example 2

Example 3

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