#Java - Code Snippets for '#String contains'

#Java - Code Snippets for '#String contains' - 4 code snippet(s) found

Sample 1. Check if a string contains a substring.

String text = "I don't think we're in Kansas anymore";



if(text.indexOf("Kansas") != -1){

    System.out.println("Yes, the dialog contains Kansas");

}

_{Like Feedback string substring indexOf()}

Sample 2. Remove Alien characters i.e removing everything except characters , numbers and special characters.

String removeAlienCharacters(String str){

   String newString = new String();

   String returnString = "";

   if(str.contains("<")){

      String[] str2 = str.split("<");

      str = str2[0];

   }

      

   for(char x: str.toCharArray()){

      if((x >= 48 && x <= 57) || (x>=65 && x <= 90) || (x >= 97 && x<= 122) || x=='.'){

         returnString += x;

      }

   }

   return returnString.trim();

}

_{Like Feedback string .contains() .split() string split string contains remove characters from string remove alien characters}

Sample 3. Method to get a map of words and their count by passing in the string

Map<String,Integer> wordCountMap = new TreeMap();

          String[] words = text.split(" ");

          Set<Integer> countSet;

          for(String word: words) {

              if(wordCountMap.containsKey(word.toLowerCase())){

                  wordCountMap.put(word.toLowerCase(), wordCountMap.get(word.toLowerCase()).intValue() + 1);

              } else {

                  wordCountMap.put(word.toLowerCase(), 1);

              }

          }



          countSet = new TreeSet(Collections.reverseOrder());

          countSet.addAll(wordCountMap.values());



          for(Integer inte: countSet) {

             for(Entry<String,Integer> entry: wordCountMap.entrySet()){

                if(entry.getValue() == inte) {

                    System.out.println(entry);

                }

             }

          }

_{Like Feedback map word count map of string and integer containsKey string split treeset Collections.reverseOrder set addAll entry}

Sample 4. Check if the String contains specified characters using CharSetUtils (Apache Commons)

System.out.println(CharSetUtils.containsAny("Whats Up ?", "W")); // Prints true as the String contains character W  System.out.println(CharSetUtils.containsAny("Whats Up ?", "YZ")); // Prints false as the String doesn't contain character Y or Z

_{Like Feedback CharSetUtils (Apache Commons) Check if String contains characters}

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