Java - Double isInfinite() method

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Description

The Java Double isInfinite() method returns true if this Double value is infinitely large in magnitude, false otherwise.

Declaration

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

public boolean isInfinite()

Parameters

NA

Return Value

This method returns true if the value represented by this object is positive infinity or negative infinity, else false.

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

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

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

Output

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

NaN = false

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

Output

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

0.0 = false