Why the o/p not the same?

Question

https://code.sololearn.com/c0dsJBd7m8eC/?ref=app

Answer 1

System.out.println(i + ' ' + x[i]);

Java converted the char ' ' into its number in ASCII, a space(' ') ASCII number is 32, so it is:

0 + 32 + 0 => 32
1 + 32 + 0 => 33
2 + 32 + 0 => 34

System.out.println(i + " " + x[i]);

Java concatenate and cast operands as necessary so all the operands are treated as string.

"0 0"
"1 0"
"2 0"

Hth, cmiiw

Answer 2

Because the first does addition of the 3 values, while the second does string concatenation.

Answer 3

oh , thank you all.
I appreciate that 😁😍
Now I understood