用Java初始化Map,Hashmap
你将如何初始化Java中的静态地图?
方法一:如下创建一个从Hashmap扩展的类
下面是一个例子,说明我使用CustomMap的方式:
public class CustomMap < K, V > extends java.util.HashMap < K, V > {
public CustomMap(Object[]...objs) {
super();
this.of(objs);
}
public java.util.Map < K, V > of(Object[]...objs) {
for (Object[] o: objs) {
this.of((K) o[0], (V) o[1]);
}
return this;
}
public java.util.Map < K, V > of(K k, V v) {
this.put(k, v);
return this;
}
public static Object[] tuple(Object k, Object v) {
return new Object[] {
k, v
};
}
//USAGE
public static void main(String...args) {
//import static CustomMap.tuple;
java.util.Map < String, String > cmap = new CustomMap < > (CustomMap.tuple("One", "Two"));
}
}
链接地址: http://www.djcxy.com/p/18023.html
上一篇: initialize a Map, Hashmap, in Java
下一篇: How to delete items from a dictionary while iterating over it?