Questions and answers

How many bytes is a hex string?

How many bytes is a hex string?

Tech Stuff – Hexadecimal, Decimal and Binary

Numbering System Base Notes
Hexadecimal base 16 Each Hexadecimal character represents 4 bits (0 – 15 decimal) which is called a nibble (a small byte – honest!). A byte (or octet) is 8 bits so is always represented by 2 Hex characters in the range 00 to FF.

How do you convert bytes to hexadecimal?

To convert byte array to a hex value, we loop through each byte in the array and use String ‘s format() . We use X to print two places ( 02 ) of Hexadecimal ( X ) value and store it in the string st . This is a relatively slower process for large byte array conversion.

What is hex string in Java?

Hexadecimal to string Get the hexadecimal value (String). Convert it into a character array using the toCharArray() method. Read each two characters from the array and convert them into a String. Parse above obtained string into base 16 integer, cast it into a character. Concat all the characters to a string.

Which is bigger byte or nibble?

Binary values are often grouped into a common length of 1’s and 0’s, this number of digits is called the length of a number. Each 1 or 0 in a binary number is called a bit. From there, a group of 4 bits is called a nibble, and 8-bits makes a byte.

How does a hex code work?

Hex color codes start with a pound sign or hashtag (#) and are followed by six letters and/or numbers. The first two letters/numbers refer to red, the next two refer to green, and the last two refer to blue. Numbers are used when the value is 1-9. Letters are used when the value is higher than 9.

How do you calculate hex?


  1. Divide the decimal number by 16. Treat the division as an integer division.
  2. Write down the remainder (in hexadecimal).
  3. Divide the result again by 16. Treat the division as an integer division.
  4. Repeat step 2 and 3 until result is 0.
  5. The hex value is the digit sequence of the remainders from the last to first.

What does 0b11111111 mean?

Since “0b11111111” is the number 255 in base‑10, we have a total of 256 shades in each color channel per pixel with 0 being black.

What color is 0xff?

INFO: CColor, Color Object, RteColor provides expanded colors and HTML color listing

Color Name RGB (Decimal) RGB (Hex)
Gold 255, 215, 0 0xFF, 0xD7, 0x0
Goldenrod 218, 165, 32 0xDA, 0xA5, 0x20
Gray 128, 128, 128 0x80, 0x80, 0x80
Green 0, 128, 0 0x0, 0x80, 0x0

What are 16 bits called?

uint16_t – 16 bits, unsigned. uint32_t – 32 bits, unsigned. uint64_t – 64 bits, unsigned.

How do you convert decimals to Hex?

Convert decimal to hex. If you want to convert decimal number to hex number back in Excel, you also can use a formula. Select a blank cell next to the decimal number column, and type this formula =DEC2HEX(A2) (A2 indicates the cell you need to convert) into it, press Enter key, then drag its AutoFill handle to fill the range you need.

How to print a byte array in Java?

How to print a byte array in Java? You can simply iterate the byte array and print the byte using System.out.println () method.

How do you convert hex to binary?

There is a formula can convert the hex number to binary number. Select a blank cell adjacent to the hex number cell, and type this formula =HEX2BIN(A2) (A2 stands for the cell you want to convert) into it, and press Enter key to apply this formula, and if you need, you can drag its AutoFill handle to a range.

How to convert a byte array to a string?

The process of converting a byte array to a String is called decoding. This process requires a Charset. Though, we should use charset for decoding a byte array. The simplest way to convert a byte array into String, we can use String class constructor with byte [] as the constructor argument.