Java - Double doubleValue() method

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Description

The Java Double doubleValue() method returns the double value of this Double object.

Declaration

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

public double doubleValue()

Parameters

NA

Return Value

This method returns the double value represented by this object.

Exception

NA

Example 1

The following example shows the usage of Double doubleValue() method to get a double primitive value of given positive Double object. We've initialized a Double object with a given positive double value. Then using doubleValue() method, we're printing its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {
      Double d = new Double("15.30");
   
      //return the double value
      System.out.println("Value = " + d.doubleValue());
   }
} 

Output

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

Value = 15.3

Example 2

The following example shows the usage of Double doubleValue() method to get a double primitive value of given negative Double object. We've initialized a Double object with a given positive double value. Then using doubleValue() method, we're printing its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {
      Double d = new Double("-15.30");
   
      //return the double value
      System.out.println("Value = " + d.doubleValue());
   }
} 

Output

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

Value = -15.3

Example 3

The following example shows the usage of Double doubleValue() method to get a double primitive value of given negative Double object of zero value. We've initialized a Double object with a given negative zero value. Then using doubleValue() method, we're printing its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {
      Double d = new Double("-0.0");
   
      //return the double value
      System.out.println("Value = " + d.doubleValue());
   }
} 

Output

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

Value = -0.0

Example 4

The following example shows the usage of Double doubleValue() method to get a double primitive value of given positive Double object of zero value. We've initialized a Double object with a given positive zero value. Then using doubleValue() method, we're printing its value.

package com.tutorialspoint;
public class DoubleDemo {
   public static void main(String[] args) {
      Double d = new Double("+0.0");
   
      //return the double value
      System.out.println("Value = " + d.doubleValue()); 
   }
} 

Output

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

Value = 0.0