list中删除另一个list中相同属性值

1. list中添加元素

原生方法，需要多行
 List<Teacher> teacherList = new ArrayList();
 teacherList .add(teacher1);
 teacherList .add(teacher2);
 单行方法有
1. Arrays.asList(T... a) //添加元素，list不能remove元素，否则报错 java.util.ConcurrentModificationException
2.  ArrayList<String> list = new ArrayList<String>(Arrays.asList(strArray)；
3.  ArrayList<String> arrayList = new ArrayList<String>(strArray.length);
			Collections.addAll(arrayList, strArray);
4.    Arrays.stream(T[] array).collect(Collectors.toList());

2. 测试list移除元素

两个实体类

@AllArgsConstructor
@NoArgsConstructor
@Data
public class Student {
          
   
    private String studentId;
    private String studentName;
}
@AllArgsConstructor
@NoArgsConstructor
@Data
public class Teacher {
          
   
    private Integer id;
    private String teacherName;
    private String studentId;
}

测试代码

@Test
    void name3() {
          
   
        Student student1 = new Student("001", "张三");
        Student student2 = new Student("002", "李四");
        Student student3 = new Student("003", "王五");
        List<Student> studentList = Arrays.stream(new Student[]{
          
   student1, student2, student3}).collect(Collectors.toList());
        Teacher teacher1 = new Teacher(1, "张三老师", "001");
        Teacher teacher2 = new Teacher(2, "王五老师", "003");
        List<Teacher> teacherList = Arrays.stream(new Teacher[]{
          
   teacher1, teacher2}).collect(Collectors.toList());

        //把学生列表中的老师排除
		 studentList.removeIf(student -> teacherList.stream().anyMatch(teacher -> teacher.getStudentId().equals(student.getStudentId())));
         System.out.println(studentList); // [Student(studentId=002, studentName=李四)]

    //  这种方式创建List，移除时报错        java.util.ConcurrentModificationException
  		 //List<Student> studentList = Arrays.asList(student1, student2, student3);
		// List<Teacher> teacherList = Arrays.asList(teacher1, teacher2);
//        for (Student student : studentList) {
          
   
//            for (Teacher teacher : teacherList) {
          
   
//                if(teacher.getStudentId().equals(student.getStudentId())){
          
   
//                    studentList.remove(student);
//                }
//            }
//        }
    }
		//使用迭代器 list.remove()可以移除元素
        Iterator<Student> studentIterator = studentList.iterator();
        while (studentIterator.hasNext()){
          
   
            Student student = studentIterator.next();
            for (Teacher teacher : teacherList) {
          
   
                if(teacher.getStudentId().equals(student.getStudentId())){
          
   
                    studentIterator.remove();
                }
            }
        }