List removeAll(Collection<?> c)

import java.util.*;
 
public class ListRemoveAllTest {
    public static void main(String[] args) {
        
        // list<String>.removeAll 예제
        List orgList = new ArrayList();
        orgList.add("AA");
        orgList.add("BB");
        orgList.add("CC");
        orgList.add("AA");
        
        List list = new ArrayList();
        list.add("CC");
        list.add("CC");
        list.add("AA");
 
        System.out.println("=======BEFORE============");
        for(String item : orgList) {
            System.out.println(item);
        }
 
        orgList.removeAll(list);
        System.out.println("=======AFTER============");
        for(String item : orgList) {
            System.out.println(item);
        }        
 
        // list<VO>.removeAll 예제
        UserVo vo;
        List voOrgList = new ArrayList();
        vo = new UserVo("Mike",35,"서울");
        voOrgList.add(vo);
        vo = new UserVo("Tom",35,"김해");
        voOrgList.add(vo);
        vo = new UserVo("Tom",99,"김해");
        voOrgList.add(vo);
        vo = new UserVo("Bit",35,"서울");
        voOrgList.add(vo);
 
        List voList = new ArrayList();
        
        vo = new UserVo("Mike",35,"서울");
        voList.add(vo);
        vo = new UserVo("Tom",35,"김해");
        voList.add(vo);
 
        System.out.println("=======BEFORE============");
        for(UserVo item : voOrgList) {
            System.out.println(item.toString());
        }
        
        //removeAll -> batchRemove -> contains -> equlas
        voOrgList.removeAll(voList);
 
        System.out.println("=======AFTER============");
        for(UserVo item : voOrgList) {
            System.out.println(item.toString());
        }
        
        
    }
 
}
 
class UserVo {
    private String name;
    private int age;
    private String address;
    
    UserVo(String name,int age, String address){
        this.name = name;
        this.age = age;
        this.address = address;
    }
    
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    
    @Override
    public String toString() {
        return "UserVo [name=" + name + " , Age = "+age+", address=" + address + "]";
    }
    
    @Override
    public boolean equals(Object anObject) {
        if (!(anObject instanceof UserVo)) {
            return false;
        }
        UserVo otherMember = (UserVo)anObject;
        return (otherMember.getName().equals(getName())&&otherMember.getAge()==getAge()&&otherMember.getAddress().equals(getAddress()));
    }

 

 

 

과제 진행중 A List 중 B List 중복되는것을 제거해야하는데 for문을 돌리면서 AList.contains(BList중) 으로하였다가

removeAll 을 알게되어 남기게 됐습니다. 남기는김에 List<VO>관련하여 euqals를 이용하여 removeAll 하는 방법도 추가