Java - int hexadecimal number format

What is int hexadecimal number format?

All int literals in the hexadecimal number format start with 0x or 0X and they must have at least one more hexadecimal digit.

Hexadecimal number format uses 16 digits, 0-9 and A-F (or a-f).

The case of the letters A to F does not matter.

The following are the examples of using int literals in hexadecimal format:

  
int num1 = 0x123; 
int num2 = 0xdecafe; 
int num3 = 0x1A2B; 
int num4 = 0X0123; 
int num5 = 0XDEAD; 
int num6 = 0Xdead;
int num7 = 0Xfade;

Demo

public class Main {
  public static void main(String[] args) {
    int num1 = 0x123; 
    int num2 = 0xdecafe; 
    int num3 = 0x1A2B; 
    int num4 = 0X0123; 
    int num5 = 0XDEAD; 
    int num6 = 0Xdead;
    int num7 = 0Xfade;
    System.out.println(num1);//ww  w.j ava2s . c o m
    System.out.println(num2);
    System.out.println(num3);
    System.out.println(num4);
    System.out.println(num5);
    System.out.println(num6);
    System.out.println(num7);
  }
}

Result

Exercise

• Write code to Convert hex in string To Byte
• Write code to convert int to to Hex String
• Write code to Returns the the byte value of a hexadecimal char (0-f).
• Write code to convert byte array to Hex String
• Convert byte Array To Hexstring
• Write code to Convert byte array to Hex String using shift operator
• Write code to convert byte array To Hex String by converting each byte to hex string
• Write code to convert single byte To Hex String
• Write code to convert byte array to Hex String via hex char table
• Write code to convert bytes To Hex String using & (and operator)
• Write code to convert byte To Hex via String.format()
• Write code to convert byte hex
• Write code to convert hex to byte and throw exception if needed
• Write code to Convert a hex-encoded string into a byte in char type.
• Write code to Read a number of bytes from a hex-encoded string
• Write code to convert byte array to Hex String using shift right operator
• Write code to Convert a value to a hex string with a fixed number of digits.
• Write code to Return a plausibly-random number string in hex form.
• Write code to Return the integer value of the passed-in char interpreted as a hex digit.
• Write code to Convert the given character to a four-digit hexadecimal string
• Write code to byte array To Hex String
• Write code to convert hex String To Byte Array
• Write code to convert String to Unicode

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