set 怎么用iterator()方法来区分重复与否

Question

set 怎么用iterator()方法来区分重复与否

Answer 1

1234567891011121314151617181920212223242526272829303132333435363738import java.util.HashSet;import java.util.Iterator;import java.util.Set;  public class SetTest {    //结果输出为ELEM    static void AddToSet(){        String str = "ELEM";        String str1 = new String("ELEM");        Set set = new HashSet();        Set setCompare = new HashSet();        set.add(str);        set.add(str1);        setCompare.add(str1);        //Iterator是用来遍历容器中的元素的        Iterator itera = set.iterator();        Iterator iteraCompare = setCompare.iterator();        while(itera.hasNext())        {            System.out.println((String)itera.next());        }        while(iteraCompare.hasNext())        {            System.out.println((String)iteraCompare.next());        }        if(set.equals(setCompare)){            System.out.println("两个对象内容相同");        }        if(set == setCompare){            System.out.println("两个对象相等");        }              }    public static void main(String[] args){        SetTest.AddToSet();    }  }