又一道HashMap简单例子

java 代码

public class HashMapDemo{

        public static void main(String [] args){

                HashMap emPhone = new HashMap();

                emPhone.put("Ashish","111-222-3333");
                emPhone.put("Archit","444-555-6666");
                emPhone.put("Prashant","777-888-9999");

                Set keys = emPhone.keySet();//Set类可以获取HashMap对象的键。
                Iterator keyIter = keys.iterator();
                while(keyIter.hasNext()){
                        String nextName = (String)keyIter.next();
                        String phoneNum = (String)emPhone.get(nextName);
                        System.out.println(nextName + ":" + phoneNum);
                }

                String phoneName = (String)emPhone.remove("Ashish");
                System.out.println("Removed Ashish's number :" + phoneName);

                HashMap newEmpPhone = new HashMap();

                newEmpPhone.putAll(emPhone);
                int dirSize = newEmpPhone.size();
                System.out.println("Created new phone directory with " + dirSize + " numbers...");

                phoneName = (String)newEmpPhone.get("Prashant");
                System.out.println("Prashant's number in new director: " + phoneName);

        }

}

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javascript表单提交 | HashMap介绍不错的例子

• 2007-11-24 20:37
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