Develop a container for storing data using an internal class

Case Introduction: The development of a container to store key-value pairs, keys to store English names, values for the Chinese name, the key value of the use of internal classes to encapsulate;

Case Design:

① uses static inner classes to encapsulate key-value pairs of data;

② container Default size is 5, more than the expansion of its twice times;

③ returns the data in the container by calling the Entryarrays method;

1 Importjava.util.Arrays;2  Public classentrydemo{3      Public Static voidMain (String []args) {4MyContainer container=NewMyContainer ();5Container.put ("Jack", "Jake");6Container.put ("Jay", "Jay Chou"));7Container.put ("John", "John");8Container.put ("Rose", "Ross");9Container.put ("Jack", "Zhang San");Ten          OneMycontainer.entry[] Entrys=container.entryarrays (); A          for(inti=0;i<entrys.length;i++){ -Mycontainer.entry entry=Entrys[i]; -System.out.println (Entry.getkey () + "--" +Entry.getvalue ()); the         } -     } - } -  + classmycontainer{ -     //an array of entry objects, with a default size of 5 +     PrivateEntry[] Entrys=NewEntry[5]; A     Private intCount=0; at      -     //externally provides an interface for storing encapsulated data in a container -      Public voidput (String key,string value) { -Entry entry=NewEntry (); - Entry.setkey (key); - Entry.setvalue (value); inEntrys[count++]=entry;//storing entry objects into arrays -         //Expansion of Arrays to         if(count>=entrys.length) { +             //size of new array after expansion -             intNewcapacity=entrys.length*2; the             //Copy the data from the old array into a new array of length newcapacity *entrys=arrays.copyof (entrys,newcapacity); $         }Panax Notoginseng     } -      the     //returns the contents of the container with data +      Publicentry[] Entryarrays () { A         returnArrays.copyofrange (entrys,0, count); the     } +      -     //encapsulates a key-value pair in a entry object $      Public Static classentry{ $         PrivateString key; -         PrivateString value; -          Public voidSetkey (String key) { the              This. key=key; -         }Wuyi          PublicString GetKey () { the             returnkey; -         } Wu          Public voidSetValue (String value) { -              This. value=value; About         } $          PublicString GetValue () { -             returnvalue; -         } -     } A}

Develop a container for storing data using an internal class