如何连接两个arraylist <String>并存储到第三个arraylist <String>？

Question

我有三个arraylist,在这里我必须连接2个arraylist并将它显示为第三个arraylist.我的编码如下,

编码::

List<String> firstName  = new ArrayList<String>();
List<String> lastName  = new ArrayList<String>();
         /////inserting first name
         String string1 = "aaa";
         firstName.add(string1);
         String string2 = "bbb";
         firstName.add(string2);
         ///////inserting last name
         String string3 = "yyy";
         lastName.add(string3);
         String string4 = "zzz";
         lastName.add(string4);

 /////////first name 
        Iterator<String> iterator = firstName.iterator();
        while(iterator.hasNext()){
         String FirstName = iterator.next();
         System.out.println(" FirstName   "+FirstName);
        }
 //////////////last name
        Iterator<String> iterator1 = lastName.iterator();
        while(iterator1.hasNext()){
         String LastName = iterator1.next();
         System.out.println(" LastName  "+LastName);
        }
List<String> name=new ArrayList<String>();
        ///////////name=firstname+lastname
        Iterator<String> iterator11 = lastName.iterator();
        while(iterator11.hasNext()){
         name=firstName+lastName;///////here getting error
               ////////////what should I do here to add two arraylist<String> value
         System.out.println(" Name = FirstName+LastName  "+name);
        }

我想要的输出::

FirstName   aaa
FirstName   bbb
LastName  yyy
LastName  zzz
Name = FirstName+LastName aaayyy
Name = FirstName+LastName bbbzzz

但我不知道如何连接两个arrayList并在第三个arrayList中显示它,请帮助我..提前感谢..

Answer 1

如果列表具有相同的大小,您可以将它们一起迭代:

Iterator<String> iterator = firstName.iterator();
Iterator<String> iterator1 = lastName.iterator();

while(iterator.hasNext() && iterator1.hasNext()){
    String FirstName = iterator.next();
    String LastName = iterator1.next();
    // add FirstName and LastName to the new list here
}

UPDATE

Iterator<String> iterator = firstName.iterator();
Iterator<String> iterator1 = lastName.iterator();
List<String> newList = new ArrayList<String>();

while(iterator.hasNext() && iterator1.hasNext()){
    String FirstName = iterator.next();
    String LastName = iterator1.next();
    newList.add(FirstName + " " + LastName);
}