Java Collection Join join(String delimiter, Collection objects)

Description

join

License

Apache License

Declaration

public static String join(String delimiter, Collection<? extends Object> objects) 

Method Source Code

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

import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;

public class Main {
    public static final String EMPTY_STRING = "";

    public static String join(String delimiter, Collection<? extends Object> objects) {
        if (objects == null || objects.isEmpty()) {
            return EMPTY_STRING;
        }//w  w  w  .j av  a 2s .  c  om
        Iterator<? extends Object> iterator = objects.iterator();
        StringBuilder builder = new StringBuilder();
        builder.append(iterator.next());
        while (iterator.hasNext()) {
            builder.append(delimiter).append(iterator.next());
        }
        return builder.toString();
    }

    public static String join(String delimiter, Object... objects) {
        return join(delimiter, Arrays.asList(objects));
    }
}

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