/*
* Multiple markers at this line
- Can only iterate over an array or an instance of java.lang.Iterable
- Map.Entry is a raw type. References to generic type Map<K,V>.Entry<K,V> should be
parameterized
*/
代码如下：
import java.util.HashMap;
import java.util.Map.Entry;
public class TongJiZiFu {
public static void main(String[] args){
String content = "中国aadf的111萨bbb菲的zz萨菲";
HashMap map = new HashMap();
for(int i=0;i<content.length();i++)
{
char c = content.charAt(i);
Integer num = (Integer)map.get(c);
if(num == null)
num = 1;
else
num = num + 1;
map.put(c,num);
}
for(Entry entry : map)
{
System.out.println(entry.getKey() +":" + entry.getValue());
}
}
}
其中标红色是出错的地方；for(Entry entry : map)
