java - can we convert integer into character

Question

we can convert character to an integer equivalent to the ASCII value of the same but can we do the reverse thing ie convert a given ASCII value to its character equivalent?

public String alphabets(int[] num)
{
char[] s = new char[num.length];
String str = new String();
for(int i=0; i< num.length; i++)
{   
    s[i] = 'A' + (char)(num[i]- 1);
    str += Character.toString(s[i]);
}
return str;         
}

shows possible lost of precision error ...

Answer 1

To convert to/from:

int i = 65;
char c = (char)i;

char c = 'A';
int i = (int)c;