String s1 = ...
String s2 = ...
method(s1.charAt(x), s2.charAt(y));
s1.charAt(x)
executes first, then s2.charAt(y)
.
s2.charAt(y)
executes first, then s1.charAt(x)
.
Dunno which executes first — better find out.
I might know which executes first but I don't care.