How to Concatenate Bytes

Question

I have an array of Bytes. How do I concatenate them? E.g.

Byte mem[] = new Byte[4];
mem[0] = aa;
mem[1] = bb;
mem[2] = cc;
mem[3] = 00;

I want to return one hexadecimal number: aabbcc00

That is not valid Java code. Did you mean `mem[0] = 0xaa;`? --- Also, I sure hope you meant to use `byte[]`, not `Byte[]`. — Andreas, Sep 17 '20 at 05:54
If you wanted one 4-byte hex number, why not use `int num = 0xaabbcc00;`? — Andreas, Sep 17 '20 at 05:55

score 0 · Answer 1 · answered Sep 17 '20 at 06:13

0

Byte mem[] = new Byte[4];
mem[0] = aa;
mem[1] = bb;
mem[2] = cc;
mem[3] = 00;
for(int i=0; i<4; i++)
  {
     System.out.print(mem[i]);
  }

You can use this for loop to get ouput aabbcc00.

answered Sep 17 '20 at 06:13

Shubham Teke

1 Answers1