Java Programs Made Easy

Q)... find the three consecutive characters in a string. if the string consists any three 
   consecutive characters return 1 else return -1
   like AAAxyzaaa will return true.

1. package Set1;
2. public class ClassSet36 {
3. public static void main(String[] args) {
4.  String s1="aaaaxyzAAA";
5.  boolean b=consecutiveCharactersCheck(s1);
6.  if(b==true)
7.   System.out.println("presence of consecutive characters");
8.  else
9.   System.out.println("absence of consecutive characters");
10.  }
11. public static boolean consecutiveCharactersCheck(String s1) {
12.  boolean b=false;
13.  int c=0;
14.  for(int i=0;i<s1.length()-1;i++)
15.   if((s1.charAt(i+1)-s1.charAt(i))==1)
16.     c++;
17.  if(c>=2)
18.   b=true;
19.  return b;
20. }
21. }