Java lang Integer.toHexString() Method with Examples
Last Updated :
05 Dec, 2018
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The Java.lang.Integer.toHexString() is a built-in function in Java which returns a string representation of the integer argument as an unsigned integer in base 16. The function accepts a single parameter as an argument in Integer data-type.
Syntax :
Java
Output:
Java
Output:
Java
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Java
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public static String toHexString(int num) Parameter : The function accepts a single mandatory parameter num - This parameter specifies the number which is to be converted to a Hexadecimal string. The data-type is int.Return Value : The function returns a string representation of the int argument as an unsigned integer in base 16. Examples:
Input : 11 Output : b Input : 12 Output : cProgram 1: The program below demonstrates the working of function.
// Java program to demonstrate working
// of java.lang.Integer.toHexString() method
import java.lang.Math;
class Gfg1 {
// driver code
public static void main(String args[])
{
int l = 234;
// returns the string representation of the unsigned int value
// represented by the argument in binary (base 2)
System.out.println("Hex string is " + Integer.toHexString(l));
l = 11;
System.out.println("Hex string is " + Integer.toHexString(l));
}
}
// Java program to demonstrate working// of java.lang.Integer.toHexString() methodimport java.lang.Math;class Gfg1 { // driver code public static void main(String args[]) { int l = 234; // returns the string representation of the unsigned int value // represented by the argument in binary (base 2) System.out.println("Hex string is " + Integer.toHexString(l)); l = 11; System.out.println("Hex string is " + Integer.toHexString(l)); }}Hex string is ea Hex string is bProgram 2: The program below demonstrates the working function when a negative number is passed.
// Java program to demonstrate
// of java.lang.Integer.toHexString() method
// negative number
import java.lang.Math;
class Gfg1 {
// driver code
public static void main(String args[])
{
// when negative number is passed
System.out.println("Hex is " + Integer.toHexString(-10));
}
}
// Java program to demonstrate// of java.lang.Integer.toHexString() method// negative numberimport java.lang.Math;class Gfg1 { // driver code public static void main(String args[]) { // when negative number is passed System.out.println("Hex is " + Integer.toHexString(-10)); }}Hex is fffffff6Errors and Exception: Whenever a decimal number or a string is passed as an argument, it returns an error message which says "incompatible types". Program 3: The program below demonstrates the working function when a string number is passed.
// Java program to demonstrate
// of java.lang.Integer.toHexString() method
// string number
import java.lang.Math;
class Gfg1 {
// driver code
public static void main(String args[])
{
// when negative number is passed
System.out.println("Hex is " + Integer.toHexString("12"));
}
}
// Java program to demonstrate// of java.lang.Integer.toHexString() method// string numberimport java.lang.Math;class Gfg1 { // driver code public static void main(String args[]) { // when negative number is passed System.out.println("Hex is " + Integer.toHexString("12")); }}prog.java:13: error: incompatible types: String cannot be converted to int
System.out.println("Hex is " + Integer.toHexString("12"));
Program 4: The program below demonstrates the working function when a decimal is passed.
// Java program to demonstrate
// of java.lang.Integer.toHexString() method
// decimal
import java.lang.Math;
class Gfg1 {
// driver code
public static void main(String args[])
{
// when decimal number is passed
System.out.println("Hex is " + Integer.toHexString(12.34));
}
}
// Java program to demonstrate// of java.lang.Integer.toHexString() method// decimalimport java.lang.Math;class Gfg1 { // driver code public static void main(String args[]) { // when decimal number is passed System.out.println("Hex is " + Integer.toHexString(12.34)); }}prog.java:13: error: incompatible types: possible lossy conversion from double to int
System.out.println("Hex is " + Integer.toHexString(12.34));
