how to get the character from ascii value in java code example

Example 1: number to char java

char b = Integer.toString(a);//7-->"7"

char b = (char) b;//65-->"A"

Example 2: how to add a number to the ascii value of a char in java

char a = 97+1;
char b = 'a'+2;
r = (char)(1+5)