commons-lang3-3.8.1.jar - Apache Commons Lang

commons-lang3-3.8.1.jar is the JAR file for Apache Commons Lang 3.5, which provides a host of helper utilities for the java.lang API.

commons-lang3-3.8.1.jar is distributed as part of the download file.

JAR File Size and Download Location:

JAR name: commons-lang3-3.8.1.jar
Target JDK version: 1.8
Dependency: None
File name: commons-lang3.jar, commons-lang3-3.8.1.jar
File size: 501,879 bytes
Release date: 19-Sep-2018
Download: Apache Commons Lang Website

✍: FYIcenter


 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.commons.lang3.text.translate;

import java.util.HashMap;
import java.util.HashSet;

 * Translates a value using a lookup table.
 * @since 3.0
 * @deprecated as of 3.6, use commons-text
 * <a href="">
 * LookupTranslator</a> instead
public class LookupTranslator extends CharSequenceTranslator {

    private final HashMap<String, String> lookupMap;
    private final HashSet<Character> prefixSet;
    private final int shortest;
    private final int longest;

     * Define the lookup table to be used in translation
     * Note that, as of Lang 3.1, the key to the lookup table is converted to a
     * java.lang.String. This is because we need the key to support hashCode and
     * equals(Object), allowing it to be the key for a HashMap. See LANG-882.
     * @param lookup CharSequence[][] table of size [*][2]
    public LookupTranslator(final CharSequence[]... lookup) {
        lookupMap = new HashMap<>();
        prefixSet = new HashSet<>();
        int _shortest = Integer.MAX_VALUE;
        int _longest = 0;
        if (lookup != null) {
            for (final CharSequence[] seq : lookup) {
                this.lookupMap.put(seq[0].toString(), seq[1].toString());
                final int sz = seq[0].length();
                if (sz < _shortest) {
                    _shortest = sz;
                if (sz > _longest) {
                    _longest = sz;
        shortest = _shortest;
        longest = _longest;

     * {@inheritDoc}
    public int translate(final CharSequence input, final int index, final Writer out) throws IOException {
        // check if translation exists for the input at position index
        if (prefixSet.contains(input.charAt(index))) {
            int max = longest;
            if (index + longest > input.length()) {
                max = input.length() - index;
            // implement greedy algorithm by trying maximum match first
            for (int i = max; i >= shortest; i--) {
                final CharSequence subSeq = input.subSequence(index, index + i);
                final String result = lookupMap.get(subSeq.toString());

                if (result != null) {
                    return i;
        return 0;



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