Hexadecimal system is 16 based, digit can be used is from range 0 – 9 A – F.
Prefix – 0x
Hexadecimal literal have a prefix 0x. Example:
public static void main(String[] args) {
int first = 0xA; #10
int second = 0xB; #11
int third = 0xC; #12
}
Print Decimal Value
Since the digit start from 0-9A-F, meaning the 10=A, 11=B, 12=C, 13=D, 14=E, 15=F
public static void main(String[] args) {
int first = 0xA;
int second = 0xB;
int third = 0xC;
System.out.println("first " + first); //10
System.out.println("second " + second); //11
System.out.println("third " + third); //12
}
What is the hex value 16?
String hex = Integer.toHexString(16); // 0x10
/* verify the answer
* (1 * 16^ 1) + (0 * 16^0 )
* (1 * 16) + ( 0 * 1)
* 16 + 0
Example 1
public static void main(String[] args) {
int first = 0x14A;
System.out.println("first " + first); // 330
}
Calculation
> 1 4 A
> (1 * 16^2) + (4 * 16^1) + (10 * 16^0)
> 256 + 64 + 10
> 330
Java – Hexadecimal