Java - Float toHexString() method

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Description

The Java Float toHexString() method returns a hexadecimal string representation of the float argument f.Some examples can be seen here −

Declaration

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

public static String toHexString(float f)

Parameters

f − This is the float to be converted.

Return Value

This method returns a hex string representation of the argument.

Exception

NA

Getting Hex String Representation of a Positive float Value Example

The following example shows the usage of Float toHexString(float) method to get a hex string representation of a float. We're showing multiple hex representation of positive float values along with hex representation of max float value.

package com.tutorialspoint;

public class FloatDemo {
   public static void main(String[] args) {

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

Output

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.fffffep127

Getting Hex String Representation of a Negative float Value Example

The following example shows the usage of Float toHexString(float) method to get a hex string representation of a float. We're showing multiple hex representation of negative float values along with hex representation of min float value.

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

      /* returns a hexadecimal string representation of the
         float argument */
      String str = Float.toHexString(-1.0f);
      System.out.println("Hex String = " + str);
    
      str = Float.toHexString(-3.0f);
      System.out.println("Hex String = " + str);
    
      str = Float.toHexString(-0.25f);
      System.out.println("Hex String = " + str);
    
      str = Float.toHexString(Float.MIN_VALUE);
      System.out.println("Hex String = " + str);
   }
}  

Output

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 = 0x0.000002p-126

Getting Hex String Representation of a Zero float Values Example

The following example shows the usage of Float toHexString(float) method to get a hex string representation of a float. We're showing multiple hex representation of negative and positive zero values.

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

      /* returns a hexadecimal string representation of the
         float argument */
      String str = Float.toHexString(-0.0f);
      System.out.println("Hex String = " + str);
    
      str = Float.toHexString(0.0f);
      System.out.println("Hex String = " + str);
   }
}  

Output

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

Hex String = -0x0.0p0
Hex String = 0x0.0p0