把地图中的值全部打印出来

把map中的值全部打印出来

Map map = new HashMap();
map.set( "a ", "b ");
Iterator it = map.keySet().iterator();
while (it.hasNext()) {
Object key =it.next();
System.out.println( "key is "+key);
System.out.println( "value is "+map.get(key));

}