Java - Double isInfinite(double) method

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Description

The Java Double isInfinite(double v) method returns true if the specified number is infinitely large in magnitude, false otherwise.The argument v is the value to be tested.

Declaration

Following is the declaration for java.lang.Double.isInfinite() method

public static boolean isInfinite(double v)

Parameters

v − This is the value to be tested.

Return Value

This method returns true if the value of the argument is positive infinity or negative infinity; false otherwise.

Exception

NA

Example 1

The following example shows the usage of Double isInfinite() method to check if a Double object carries a infinite value. We've initialized a double value with an expression which result in positive infinity. Then using isInfinite() method, we're checking its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {
      double d = 1.0/0.0;
   
      // returns true if positive or negative infinity
      System.out.println(d + " = " + Double.isInfinite(d));
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

Infinity = true

Example 2

The following example shows the usage of Double isInfinite() method to check if a Double object carries a infinite value. We've initialized a double value with an expression which result in negative infinity. Then using isInfinite() method, we're checking its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {

      double d = -1.0/0.0;
   
      // returns true if positive or negative infinity
      System.out.println(d + " = " + Double.isInfinite(d));
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

-Infinity = true

Example 3

The following example shows the usage of Double isInfinite() method to check if a Double object carries a infinite value. We've initialized a double value with an expression which result in NAN. Then using isInfinite() method, we're checking its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {
      double d = 0.0/0.0;
   
      // returns true if positive or negative infinity
      System.out.println(d + " = " + Double.isInfinite(d));
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

NaN = false

Example 4

The following example shows the usage of Double isInfinite() method to check if a Double object carries a infinite value. We've initialized a double value with an expression which result in zero value. Then using isInfinite() method, we're checking its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {
      double d = 0.0/1.0;
   
      // returns true if positive or negative infinity
      System.out.println(d + " = " + Double.isInfinite(d));
   }
} 

Output

Let us compile and run the above program, this will produce the following result −

0.0 = false