Java List from Array asList(List list)

Description

as List

License

Open Source License

Parameter

Parameter	Description
list	The list of elements

Return

The list of elements formatted as a comma-delimited list

Declaration

@SuppressWarnings("nls")
public static String asList(List<String> list) 

Method Source Code

//package com.java2s;
import java.util.Arrays;

import java.util.List;
import java.util.Map;
import java.util.Set;

public class Main {
    /**//ww  w. j av  a  2  s.  c  o  m
     * @param list
     *            The list of elements
     * @return The list of elements formatted as a comma-delimited list
     */
    @SuppressWarnings("nls")
    public static String asList(List<String> list) {
        StringBuffer buffer = new StringBuffer();
        if (list != null) {
            if (list.size() == 1) {
                buffer.append(list.get(0));
            } else {
                for (String element : list) {
                    buffer.append(element);
                    buffer.append(", ");
                }

                if (buffer.length() > 2) {
                    buffer.delete(buffer.length() - 2, buffer.length());
                }
            }
        }
        return buffer.toString();
    }

    /**
     * @param map
     *            A map of strings
     * @return A map expressed as a comma-delimited list of name=value tuples
     */
    @SuppressWarnings("nls")
    public static String asList(Map<String, String> map) {
        StringBuffer buffer = new StringBuffer();
        if (map != null) {
            Set<String> keys = map.keySet();
            for (String key : keys) {
                buffer.append(String.format("%s=%s, ", key, map.get(key)));
            }

            if (buffer.length() > 2) {
                buffer.delete(buffer.length() - 2, buffer.length());
            }
        }
        return buffer.toString();
    }

    /**
     * This method takes a variable argument list of string values and returns a single string with the values expressed
     * as a comma-delimited list.
     * 
     * @param values
     *            The values to be converted into a comma-separated list
     * @return The comma-separated list, or an empty string if there are no values
     */
    public static String asList(String... values) {
        return asList(Arrays.asList(values));
    }
}

Related

1. asList(Iterable iterable)
2. asList(Iterable iterable)
3. asList(Iterable iterable)
4. asList(Iterable iterable)
5. asList(Iterator iterator)
6. asList(long... array)
7. asList(Object info)
8. asList(Object o, Class cls)
9. asList(Object theone)