Java Integer toHexString() method with Examples

by Online Tutorials Library July 22, 2022

Java Integer toHexString() Method

The toHexString() method of Java Integer class returns a string representation of the integer argument as an unsigned integer in hexadecimal base 16.

The following characters are used as hexadecimal digits:

Note: If the argument is negative, the unsigned integer value is the argument plus 2³² otherwise, it is equal to the argument. This value is converted to a string of ASCII digits in hexadecimal (base 16) with no extra leading 0s. If the unsigned magnitude is zero, it is represented by a single zero character ‘0’ otherwise, the first character representation of the unsigned magnitude will not be the zero character.

Explanation:

Decimal Number	Operation (%)	Quotient	Remainder	HexaDecimal Result
975	16	60	15	F
60	16	3	12	CF
3	16	0	3	3CF

Hence:

 Decimal Number = 975 HexaDecimal Number = 3CF Varification = 3*162 + 12*161 + 15*160                 = 3*256 + 12*16 + 15*1         = 768 + 192 + 15         = 975 

Syntax:

Following is the declaration of toHexString () method:

Parameter:

DataType	Parameter	Description	Required/Optional
int	i	It specifies the integer number to be converted in hexadecimal format	Required

Returns:

The toHexString() method returns the string representation of the unsigned integer value represented by the argument in hexadecimal (base 16).

Exceptions:

Compatibility Version:

Java 1.0.2 and above

Example 1

 public class IntegerToHexStringExample1 { public static void main(String[] args) {     int i = 975;     System.out.println(“Number = ” + i);     //returns the string representation of the integer value in HexaDecimal  format     System.out.println(“HexaDecimal representation is = “+ Integer.toHexString(i).toUpperCase());     } } 

Test it Now

Output:

Number = 975 HexaDecimal representation is = 3CF

Example 2

 import java.util.Scanner; public class IntegerToHexStringExample2 { public static void main(String[] args) { System.out.print(“Enter the Number = “); Scanner readInput = new Scanner(System.in); int i = readInput.nextInt(); readInput.close();     System.out.println(“Number = ” + i);     //returns the string representation of the integer value in Hexadecimal format     System.out.println(“HexaDecimal representation is = ” + Integer.toHexString(i));     } } 

Output:

Enter the Number = 735 Number = 735 HexaDecimal representation is = 2df

Example 3

 public class IntegerToHexStringExample3 { public static void main(String[] args) {     System.out.println(Integer.toHexString(250));     System.out.println(Integer.toHexString(-250));         System.out.println(Integer.toHexString(1050));     System.out.println(Integer.toHexString(-1050));     } } 

Test it Now

Output:

fa ffffff06 41a fffffbe6

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Java Integer toHexString() method with Examples

Java Integer toHexString() Method

Explanation:

Syntax:

Parameter:

Returns:

Exceptions:

Compatibility Version:

Example 1

Example 2

Example 3

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