请看这个程序错在了哪里啊!
//Pair.java
package com.bruceeckel.util;
public class Pair{
public Object key, value;
Pair(Object k,Object v){
key = k;
value = v;
}
}
//MapGenerator.java
package com.bruceeckel.util;
public interface MapGenerator{
Pair next();
}
为什么在编译MapGenerator.java文件时出错呢?