37 lines
751 B
Java
37 lines
751 B
Java
package org.scribe.utils;
|
|
|
|
import java.util.*;
|
|
|
|
/**
|
|
* Utils for {@link Map} manipulation
|
|
*
|
|
* @author Pablo Fernandez
|
|
*/
|
|
public class MapUtils
|
|
{
|
|
/**
|
|
* Sorts a Map
|
|
*
|
|
* @param map unsorted map
|
|
* @return sorted map
|
|
*/
|
|
public static final Map<String, String> sort(Map<String, String> map)
|
|
{
|
|
Preconditions.checkNotNull(map, "Cannot sort a null object.");
|
|
|
|
Map<String, String> sorted = new LinkedHashMap<String, String>();
|
|
for (String key : getSortedKeys(map))
|
|
{
|
|
sorted.put(key, map.get(key));
|
|
}
|
|
return sorted;
|
|
}
|
|
|
|
private static List<String> getSortedKeys(Map<String, String> map)
|
|
{
|
|
List<String> keys = new ArrayList<String>(map.keySet());
|
|
Collections.sort(keys);
|
|
return keys;
|
|
}
|
|
}
|