CODEWITHSUNDEEP
java
SilentCoder
SilentCoder

Reputation: 47

String to bytes

I'm trying to convert a String to a byte array which has 2 different bytes. for eg: String s1 = " 055E" I need to convert this into like 

byte b1 = Integer.parseInt(05,16);  -  1byte

byte b2 = Integer.parseInt(5E,16);   -  1byte

At the end i need to have a byte array which will have values b1, b2. 

byte[] b = {b1, b2};

Any help on this would be appreciated. thanks in advance

Upvotes: 0

Views: 175

Answers (2)

tskuzzy
tskuzzy

Reputation: 36456

First allocate enough memory for the array. Then loop through every pair of characters and convert them to a byte. Store the result in the array.

s = s.trim();
byte[] b = new byte[s.length()/2];

for(int i = 0; i < s.length(); i+= 2) {
    b[i/2] = Byte.parseByte(s.substring(i,i+2),16);
}

Upvotes: -1

Ted Hopp
Ted Hopp

Reputation: 234795

Try this:

String s1 = " 055E";
s1 = s1.trim();
byte[] b = {
    (byte) Integer.parseInt(s1.substring(0, 2), 16),
    (byte) Integer.parseInt(s1,substring(2), 16)
}

Upvotes: 2

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