Get last name from Name - Java java.lang

Java examples for java.lang:String Substring

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Description

Get last name from Name

Demo Code

/**********************************************************************************
 * $URL: https://source.sakaiproject.org/svn/sam/trunk/component/src/java/org/sakaiproject/tool/assessment/util/StringParseUtils.java $
 * $Id: StringParseUtils.java 9273 2006-05-10 22:34:28Z daisyf@stanford.edu $
 ***********************************************************************************
 *
 * Copyright (c) 2005, 2006, 2007, 2008, 2009 The Sakai Foundation
 *
 * Licensed under the Educational Community 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
 *
 *       http://www.osedu.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.//from w  ww  . j  a  v  a 2s  . co  m
 *
 **********************************************************************************/

//package com.java2s;
import java.util.ArrayList;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] argv) {
        String name = "java2s.com";
        System.out.println(getLastNameFromName(name));
    }

    /**
     * utility.
     * @param name full name
     * @return (hopefully) last name
     */
    public static String getLastNameFromName(String name) {
        String[] names = getNameArray(name);
        if (names.length == 0) {
            return "";
        } else if (names.length == 1) {
            return names[0];
        }

        //String s = "";
        String lastWord = names[names.length - 1];
        boolean smallFound = false;

        StringBuilder buf = new StringBuilder();
        for (int i = 0; i < names.length; i++) {
            if (names[i].length() > 0) {
                if (Character.isLowerCase(names[i].charAt(0))) {
                    smallFound = true;
                }
                if (smallFound) {
                    buf.append(names[i] + " ");
                } //if
            } // ifnames
        } //for

        String s = buf.toString();
        s = s.trim();

        if (s.length() == 0) {
            s = lastWord;
        }

        return s;
    }

    /**
     * util
     * @param name
     * @return each word in name
     */
    private static String[] getNameArray(String name) {
        ArrayList list = new ArrayList();
        StringTokenizer st = new StringTokenizer(name, " ");
        while (st.hasMoreElements()) {
            list.add(st.nextToken());
        }

        int size = list.size();
        String sa[] = new String[size];

        for (int i = 0; i < size; i++) {
            sa[i] = (String) list.get(i);
        }

        return sa;
    }
}

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