Java - Get string's substring After Last

Introduction

The following code shows how to substring After Last

Demo

public class Main {
  public static void main(String[] argv) {
    String str = "book2s.com";
    String separator = "book2s.com";
    System.out.println(substringAfterLast(str, separator));
  }/*w w w  . j  ava 2 s .co m*/

  public static final String EMPTY = "";
  public static final int INDEX_NOT_FOUND = -1;

  public static String substringAfterLast(String str, String separator) {
    if (isEmpty(str)) {
      return str;
    }
    if (isEmpty(separator)) {
      return EMPTY;
    }
    int pos = str.lastIndexOf(separator);
    if (pos == INDEX_NOT_FOUND || pos == (str.length() - separator.length())) {
      return EMPTY;
    }
    return str.substring(pos + separator.length());
  }

  public static boolean isEmpty(String str) {
    return str == null || str.length() == 0;
  }
}

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