Shifting characters within a string
You can made your life simpler :
public static void main (String[] args) throws java.lang.Exception { String input = "Stackoverflow"; for(int i = 0; i < s.length(); i++){ input = shift(input); System.out.println(input); }}public static String shift(String s) { return s.charAt(s.length()-1)+s.substring(0, s.length()-1);}Output :
wStackoverfloowStackoverfllowStackoverfflowStackoverrflowStackoveerflowStackovverflowStackooverflowStackkoverflowStacckoverflowStaackoverflowSttackoverflowSStackoverflow
You could use System.arrayCopy:
char[] oldChar = newStr.toCharArray();char[] newChar = new char[oldChar.length];newChar[0] = oldChar[oldChar.length - 1];System.arrayCopy(oldChar, 0, newChar, 1, oldChar.length - 1);