Java Iterator from getCommaSeparatedValue(Iterator it)

Description

get Comma Separated Value

License

Open Source License

Declaration

private static String getCommaSeparatedValue(Iterator<String> it) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Licensed Materials - Property of IBM//from  w  w w. j  av  a  2s  .  c o m
 * (c) Copyright IBM Corporation 2015. All Rights Reserved.
 * 
 * Note to U.S. Government Users Restricted Rights:
 * Use, duplication or disclosure restricted by GSA ADP Schedule
 * Contract with IBM Corp. 
 *******************************************************************************/

import java.util.Iterator;
import java.util.List;
import java.util.Map;

public class Main {
    private static String getCommaSeparatedValue(Iterator<String> it) {
        boolean first = true;
        StringBuffer result = new StringBuffer();

        while (it.hasNext()) {
            if (first) {
                first = false;
            } else {
                result.append(","); //$NON-NLS-1$
            }

            result.append(it.next());
        }

        return result.toString();
    }

    public static String getCommaSeparatedValue(List<String> list) {
        if (isNullOrEmpty(list)) {
            return null;
        }

        return getCommaSeparatedValue(list.iterator());
    }

    public static String getCommaSeparatedValue(Map<String, String> dataMap, String delimiter, String assigner) {
        if (dataMap == null || dataMap.size() == 0) {
            return null;
        }

        StringBuffer buf = new StringBuffer(""); //$NON-NLS-1$
        for (Map.Entry<String, String> entry : dataMap.entrySet()) {
            buf.append(entry.getKey()).append(assigner).append(entry.getValue()).append(delimiter);
        }

        String value = buf.toString();
        if (!value.isEmpty()) {
            value = value.substring(0, value.length() - 1);
        } else {
            value = null;
        }

        return value;
    }

    public static boolean isNullOrEmpty(String value) {
        return value == null || value.isEmpty();
    }

    public static boolean isNullOrEmpty(List<?> list) {
        return list == null || list.isEmpty();
    }

    public static boolean isNullOrEmpty(Map<String, String> value) {
        return value == null || value.isEmpty();
    }
}

Related

1. createIntegerIterator(int start)
2. createIterable(final Iterator src)
3. get(Iterator iterator, int position)
4. getAll(Iterator it)
5. getAt(Iterator it, int pos)
6. getDestinationType(ImageReadParam param, Iterator imageTypes)
7. getEmptyIterator()
8. getEnumeratedObjectCount(Iterator objects)
9. getFirstChildrendIterator(List children)