请问这个LIST集合如何初始化
package com.xueyuan.server;
import java.util.ArrayList;
import java.util.List;
import com.xueyuan.entity.Student;
import com.xueyuan.entity.Teacher;
import com.xueyuan.util.Datas;
请问这个LIST集合如何初始化,我用的List<Student> studentList = new ArrayList<Student>();初始化显示报错,还显示add方法也报错
public class ServerService{
static{
//初始化教员
Teacher teacher = new Teacher();
teacher.setId(1);
teacher.setUserName("admin");
teacher.setPassword("123");
teacher.setNickName("许老师");
//初始化学员集合
studentList = new ArrayList<Student>();
studentList.add(1, "张三",1,28,1,"");;
studentList.add(2,"李四",1,25,0,"学习成绩良好");
studentList.add(3,"王五",1,25,1,"测试用");
studentList.add(4,"赵六",2,23,1,"还没老师");
}
public Teacher doLogin(String username,String password){
//验证用户名和密码
if(username.equals(teacher.getUserName())&&password.equals(teacher.getPassword())){
return teacher;
}else {
return null;
}
}
}