Join an array of items. - Android java.lang

Android examples for java.lang:array join

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Description

Join an array of items.

Demo Code

/*/*from   w  w  w  .  java 2 s  . co  m*/
 *******************************************************************************
 * Copyright (C) 1996-2015, International Business Machines Corporation and    *
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 */
import java.util.Collection;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.regex.Matcher;
import android.icu.text.UTF16;
import android.icu.text.UnicodeSet;
import android.icu.text.UnicodeSetIterator;

public class Main{
    /**
     * Join an array of items.
     * @param <T>
     * @param array
     * @param separator
     * @return string
     */
    public static <T> String join(T[] array, String separator) {
        StringBuffer result = new StringBuffer();
        for (int i = 0; i < array.length; ++i) {
            if (i != 0)
                result.append(separator);
            result.append(array[i]);
        }
        return result.toString();
    }
    /**
     * Join a collection of items.
     * @param <T>
     * @param collection 
     * @param <U> 
     * @param array
     * @param separator
     * @return string
     */
    public static <T, U extends Iterable<T>> String join(U collection,
            String separator) {
        StringBuffer result = new StringBuffer();
        boolean first = true;
        for (Iterator it = collection.iterator(); it.hasNext();) {
            if (first)
                first = false;
            else
                result.append(separator);
            result.append(it.next());
        }
        return result.toString();
    }
}

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