strip a string with specified string from both ends of the string - Java java.lang

Java examples for java.lang:String Strip

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Introduction

The following code shows how to strip

Demo Code

public class Main {
  public static void main(String[] argv) {
    String str = "java2s.com";
    String stripChars = "java2s.com";
    System.out.println(strip(str, stripChars));
  }//from w w  w.  j av  a 2 s . c  o  m

  public static final int INDEX_NOT_FOUND = -1;

  public static String strip(String str, String stripChars) {
    if (isEmpty(str)) {
      return str;
    }
    str = stripStart(str, stripChars);
    return stripEnd(str, stripChars);
  }

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

  public static String stripStart(String str, String stripChars) {
    int strLen;
    if (str == null || (strLen = str.length()) == 0) {
      return str;
    }
    int start = 0;
    if (stripChars == null) {
      while ((start != strLen) && Character.isWhitespace(str.charAt(start))) {
        start++;
      }
    } else if (stripChars.length() == 0) {
      return str;
    } else {
      while ((start != strLen) && (stripChars.indexOf(str.charAt(start)) != INDEX_NOT_FOUND)) {
        start++;
      }
    }
    return str.substring(start);
  }

  public static String stripEnd(String str, String stripChars) {
    int end;
    if (str == null || (end = str.length()) == 0) {
      return str;
    }

    if (stripChars == null) {
      while ((end != 0) && Character.isWhitespace(str.charAt(end - 1))) {
        end--;
      }
    } else if (stripChars.length() == 0) {
      return str;
    } else {
      while ((end != 0) && (stripChars.indexOf(str.charAt(end - 1)) != INDEX_NOT_FOUND)) {
        end--;
      }
    }
    return str.substring(0, end);
  }
}

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