第1个回答 2012-10-21
试试
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
public class $ {
public static void main(String[] args) {
Map<String, Integer> map0 = new HashMap<String, Integer>();
Map<String, Integer> map1 = new HashMap<String, Integer>();
map0.put("a", 1);
map0.put("b", 2);
map0.put("c", 3);
map1.put("a", 11);
map1.put("b", 12);
map1.put("c", 13);
map1.put("d", 14);
Set<String> set = map0.keySet();
Iterator<String> it = set.iterator();
while (it.hasNext()) {
String key = it.next();
Integer val0 = map0.get(key);
Integer val1 = map1.get(key);
if (val0 != val1) {
System.out.println(key);
}
}
}
}
结果:
b
c
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