1,HTML source code£º
<![CDATA[
<html>
<head>
<title>How to use AbstractMap</title>
</head>
<body>
<script src="jsjava.js"></script>
<script>
var hash=new HashMap();
hash.put("1","a");
hash.put("2",null);
hash.put(null,"b");
var es=hash.entrySet();
for(var i=0;i<es.size();i++){
var entry=es.get(i);
document.write(entry);
}
</script>
</body>
</html>
]]>
2,The display:
<![CDATA[
(1,a)(2,null)(null,b)
]]>