Map如何实现拷贝复制呢?

Map实现深拷贝的实现思路

使用map对象的putAll方法
    即可实现深拷贝,重新创建一个map对象

public static void main(String[] args) {
	Map<String,String> paramMap = new HashMap<String,String>();
	paramMap.put("name", "java265");
	Map<String,String> paramMap2 = new HashMap<String,String>();
	paramMap2 = paramMap;
	System.out.println("paramMap2:"+paramMap2);
	System.out.println("paramMap:"+paramMap);
	paramMap2.put("age2", "16");
	System.out.println("修改paramMap2后,paramMap值:"+paramMap);
	System.out.println("修改paramMap2后,paramMap2值:"+paramMap2);
	Map<String,String> paramMap3 = new HashMap<String,String>();
	paramMap3.putAll(paramMap);
	System.out.println(paramMap3);
	System.out.println(paramMap);
	paramMap3.put("age3", "19");
	System.out.println("修改paramMap3后,paramMap值:"+paramMap);
	System.out.println("修改paramMap3后,paramMap3值:"+paramMap3);
}