Java.lang.Double.toHexString() Method

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Description

The java.lang.Double.toHexString() method returns a hexadecimal string representation of the double argument d.Some examples can be seen here:

Floating-point ValueHexadecimal String
1.00x1.0p0
-1.0-0x1.0p0
2.00x1.0p1
3.00x1.8p1
0.50x1.0p-1
0.250x1.0p-2
Double.MAX_VALUE0x1.fffffffffffffp1023
Minimum Normal Value0x1.0p-1022
Maximum Subnormal Value0x0.fffffffffffffp-1022
Double.MIN_VALUE0x0.0000000000001p-1022

Declaration

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

public static String toHexString(double d)

Parameters

  • d -- This is the double to be converted.

Return Value

This method returns a hex string representation of the argument.

Exception

  • NA

Example

The following example shows the usage of java.lang.Double.toHexString() method.

package com.tutorialspoint;

import java.lang.*;

public class DoubleDemo {

   public static void main(String[] args) {

     Double d = new Double("4.0");

     /* returns a hexadecimal string representation of the
     double argument */
     String str = d.toHexString(1.0);
     System.out.println("Hex String = " + str);
    
     str = d.toHexString(3.0);
     System.out.println("Hex String = " + str);
    
     str = d.toHexString(0.25);
     System.out.println("Hex String = " + str);
    
     str = d.toHexString(Double.MAX_VALUE);
     System.out.println("Hex String = " + str);
   }
}  

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

Hex String = 0x1.0p0
Hex String = 0x1.8p1
Hex String = 0x1.0p-2
Hex String = 0x1.fffffffffffffp1023



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