Compare individual char of 2 string

Question

Hi
I need to compare the each individual char of 2 string.
String a = "Ae12";
String b = "aE12";
// I tried the followings:
// a
String c = a.substring(0,0);
String d = a.substring(1,1);
String e = a.substring(2,2);
String f = a.substring(3,3);
// b
String c1 = b.substring(0,0);
String d1 = b.substring(1,1);
String e1 = b.substring(2,2);
String f1 = b.substring(3,3);
if(c.equalsIgnoreCase(c1)&&d.equalsIgnoreCase(d1)&&e.equalsIgnoreCase(e1)&&f.equalsIgnoreCase(f1)) // Cannot be compared
// and I tried the followings:
// a
char c = a.charAt(0);
char d = a.charAt(1);
char e = a.charAt(2);
char f = a.charAt(3);
// b
char c1 = b.charAt(0);
char d1 = b.charAt(1);
char e1 = b.charAt(2);
char f1 = b.charAt(3);
if(c==c1&&d==d1&&e==e1&&f==f1) // cannot be compared.
Both cases cannot be compared. How can I fix it?
Because I want to compare those 2 strings without case sensitive and numbers.
Thanks

Answer 1

techissue2008 wrote:
String a = "Ae12";
String b = "aE12";
Then, are "Ae12" and "aE12" the same when ignore case?
If so, the Strings are actually the same.No, the Strings are not the same, if by same, you mean the "same" Object, or the "same" value when case is not ignored, but they are the "same" value when case is ignored.
This prints true (try it yourself), as it should
public class Test {
  public static void main (String[] args) {
    System.out.println("aE12".equalsIgnoreCase("Ae12"));
}They are still two distinct instances with two distinct values however, so where, exactly, is your problem?