- 新建一个HashMap
- 往HashMap里面存入键值对
- 通过Iterator遍历HashMap
具体代码如下:
HashMap map = new HashMap();
map.put("one", r.nextInt(10));
map.put("two", r.nextInt(10));
map.put("three", r.nextInt(10));
Iterator iterator = map.entrySet().iterator();
while(iter.hasNext()) {
Map.Entry entry = (Map.Entry)iterator.next();
System.out.println("HashMap next : "+ entry.getKey() +" - "+entry.getValue());
}