Java Array Empty Check normalizeTokens(String[] tokens, boolean removeEmpty)

Description

normalize Tokens

License

Apache License

Declaration

public static String[] normalizeTokens(String[] tokens, boolean removeEmpty) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.ArrayList;
import java.util.Arrays;

public class Main {
    private static final char[] CHARACTER_REPLACE_MAPPING = new char[256];

    public static String[] normalizeTokens(String[] tokens, boolean removeEmpty) {
        for (int i = 0; i < tokens.length; i++) {
            tokens[i] = normalizeString(tokens[i]);
        }/*from  w  ww.  java2s  . co  m*/

        if (removeEmpty) {
            tokens = removeEmpty(tokens);
        }
        return tokens;
    }

    public static String normalizeString(String token) {
        char[] charArray = token.toCharArray();
        char[] toReturn = new char[charArray.length];
        int index = 0;

        for (int i = 0; i < charArray.length; i++) {
            char x = charArray[i];
            if (x < CHARACTER_REPLACE_MAPPING.length) {
                if (CHARACTER_REPLACE_MAPPING[x] > 0) {
                    toReturn[index++] = CHARACTER_REPLACE_MAPPING[x];
                }
            }
        }

        return String.valueOf(Arrays.copyOf(toReturn, index));
    }

    /**
       * Removes empty tokens from given array. The empty slots will be filled with
       * the follow-up tokens.
       */
    public static String[] removeEmpty(String[] arr) {
        ArrayList<String> list = new ArrayList<>();
        for (String s : arr) {
            if (s != null && !s.isEmpty())
                list.add(s);
        }
        return list.toArray(new String[list.size()]);
    }
}

Related

1. isNotNullOrEmpty(T[] array)
2. isNullOrEmpty(Object[] array)
3. isNullOrEmpty(String[] s)
4. isNullOrEmpty(T[] array)
5. isNullOrEmptyOrFirstElementBlank(String[] values)
6. nullOrEmpty(Object[] array)
7. removeEmpty(String[] strings)
8. removeEmptyElements(String[] firstArray)
9. removeEmptyEntries(String[] array)