- Java.lang Package classes
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Java - Byte doubleValue() method
Description
The Java Byte doubleValue() returns the value of this Byte as a double.
Declaration
Following is the declaration for java.lang.Byte.doubleValue() method
public double doubleValue()
Specified by
doubleValue in class Number
Parameters
NA
Return Value
This method returns the numeric value represented by this object after conversion to type double.
Exception
NA
Example 1
The following example shows the usage of Byte doubleValue() method with Byte object created using new operator. We're creating a Byte variable and assigned it an Byte object created using new operator. Then a byte variable is created and assigned a byte value using doubleValue() method and then result is printed.
package com.tutorialspoint; public class ByteDemo { public static void main(String[] args) { // create a Byte object b Byte b; // assign value to b b = new Byte("100"); // create a double primitive d double d; // assign primitive value of b to d d = b.doubleValue(); String str = "Primitive double value of Byte object " + b + " is " + d; // print d value System.out.println( str ); } }
Output
Let us compile and run the above program, this will produce the following result −
Primitive double value of Byte object 100 is 100.0
Example 2
The following example shows the usage of Byte doubleValue() method with Byte object created using valueOf(String) method. We're creating a Byte variable and assigned it an Byte object created using valueOf(String) method. Then a double variable is created and assigned a double value using doubleValue() method and then result is printed.
package com.tutorialspoint; public class ByteDemo { public static void main(String[] args) { // create a Byte object b Byte b; // assign value to b b = Byte.valueOf("100"); // create a double primitive d double d; // assign primitive value of b to d d = b.doubleValue(); String str = "Primitive double value of Byte object " + b + " is " + d; // print d value System.out.println( str ); } }
Output
Let us compile and run the above program, this will produce the following result −
Primitive double value of Byte object 100 is 100.0
Example 3
The following example shows the usage of Byte doubleValue() method with Byte object created using valueOf(byte) method. We're creating a Byte variable and assigned it an Byte object created using valueOf(byte) method. Then a double variable is created and assigned a double value using doubleValue() method and then result is printed.
package com.tutorialspoint; public class ByteDemo { public static void main(String[] args) { // create a Byte object b Byte b; // assign value to b b = Byte.valueOf((byte) 100); // create a double primitive d double d; // assign primitive value of b to d d = b.doubleValue(); String str = "Primitive byte value of Byte object " + b + " is " + d; // print d value System.out.println( str ); } }
Output
Let us compile and run the above program, this will produce the following result −
Primitive byte value of Byte object 100 is 100.0