java 使用hasNext（）方法的ArrayLists和比较

Posted 2021-05-08

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

public class UsefulCodes {
  
  // ArrayLists
  public static List<String> listeler(int a){
    String[] words2={"eggs","lazers","hats","pie"};
    String[] words3={"lazers","hats"};
    
    List<String> list = new ArrayList<>();
    List<String> list2 = new ArrayList<>();
    
    //add array items to the list
    for(String x: words2)
      list.add(x);
    
    for(String y: words3)
      list2.add(y);
    
    if(a==1)return list;
    else return list2;
  }
  
  //editList
  public static void editList(Collection<String> l1, Collection<String> l2){
    
    Iterator<String> it = l1.iterator();
    while(it.hasNext()){
      if(l2.contains(it.next()))
        it.remove();
    }
    System.out.println(l1.toString());
    
  }
  
  // Main Method
  public static void main(String[] args) {
    // Compares 2 lists and excludes the identical elements //from the first list
    editList(listeler(1),listeler(2));
  }
}