摘要:
import java.util.IdentityHashMap ; import java.util.HashMap ; import java.util.Set ; import java.util.Iterator ; import java.util.Map ; class Person{ private String name ; private int age ; public Per 阅读全文
摘要:
import java.util.Vector; import java.util.Enumeration; public class EnumerationDemo01{ public static void main(String args[]){ Vector all = new Vector() ; all.add("hello") ; ... 阅读全文
摘要:
import java.util.ArrayList ; import java.util.List ; import java.util.ListIterator ; public class ListIteratorDemo01{ public static void main(String argsp[]){ List<String> all = new ArrayList<String>( 阅读全文
摘要:
import java.util.Set ; import java.util.HashSet ; class Person{ private String name ; private int age ; public Person(String name,int age){ this.name = name ; this.age = age ; } public String toString 阅读全文