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Source Code
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import java.util.Arrays;
public class Main
{
private int toDigit(char hexChar) {
int digit = Character.digit(hexChar, 16);
if(digit == -1) {
throw new IllegalArgumentException(
"Invalid Hexadecimal Character: "+ hexChar);
}
return digit;
}
public byte hexToByte(String hexString) {
int firstDigit = toDigit(hexString.charAt(0));
int secondDigit = toDigit(hexString.charAt(1));
return (byte) ((firstDigit << 4) + secondDigit);
}
public static void main(String[] args) {
Main main = new Main();
String str = "1A";
byte value = main.hexToByte(str);
System.out.println( value );
}
}
Compiling Program...
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Program is not being debugged. Click "Debug" button to start program in debug mode.
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