Java Array Join join(String[] array)

Description

join

License

Open Source License

Declaration

public static String join(String[] array) 

Method Source Code

//package com.java2s;
/*/* w  ww  . j  av  a  2s  .  co  m*/
 * Copyright 2009-2012 Evun Technology. 
 * 
 * This software is the confidential and proprietary information of
 * Evun Technology. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with evun.cn.
 */

import java.util.Collection;

public class Main {

    public static String join(String[] array) {
        if (array.length == 0)
            return "";
        StringBuilder sb = new StringBuilder();
        for (String s : array)
            sb.append(s);
        return sb.toString();
    }

    public static String join(String[] array, char split) {
        if (array.length == 0)
            return "";
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < array.length; i++) {
            if (i > 0)
                sb.append(split);
            sb.append(array[i]);
        }
        return sb.toString();
    }

    public static String join(String[] array, String split) {
        if (array.length == 0)
            return "";
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < array.length; i++) {
            if (i > 0)
                sb.append(split);
            sb.append(array[i]);
        }
        return sb.toString();
    }

    public static String join(Collection<String> coll, String split) {
        if (coll.isEmpty())
            return "";

        StringBuilder sb = new StringBuilder();
        boolean isFirst = true;
        for (String s : coll) {
            if (isFirst)
                isFirst = false;
            else
                sb.append(split);
            sb.append(s);
        }
        return sb.toString();
    }

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

Related

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2. join(String[] args)
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8. join(String[] array, String delim)
9. join(String[] array, String delimiter)