Map检测输入相同字符串的个数，

/*
*Map检测输入相同字符串的个数，
*/


import java.util.*;
public class TestArgsWords
{
public static final Integer ONE = new Integer(1);
public static void main(String[] args)
{
Map m = new HashMap();
String k = "  ";

for(int i=0;i<args.length;i++)
{
Integer freq = (Integer) m.get(args[i]);
m.put(args[i],(freq==null? ONE:new Integer(freq.intValue() +1))); 
}
System.out.println(m); 
System.out.println(m.size()+k+"distinct words detected"); 
}
}