如何遍历一个HashMap
如何遍历一个HashMap以下是两种方法遍历HashMap的代码示例：
方法1：
Map map = new HashMap();
map.put("a", "1");
map.put("b", "2");
map.put("c", "3");
map.put("d", "4");
map.put("e", "5");
for (Iterator iter = map.keySet().iterator(); iter.hasNext();) {
Object key = iter.next();
Object val = map.get(key);
System.out.println("key:"+key);
System.out.println("value:"+val);
}
方法2：
Map map = new HashMap();
map.put("a", "1");
map.put("b", "2");
map.put("c", "3");
map.put("d", "4");
map.put("e", "5");
for (Iterator iter = map.entrySet().iterator(); iter.hasNext();) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object val = entry.getValue();
System.out.println("key:"+key);
System.out.println("value:"+val);
}
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