java使用TreeSet集合，对其添加4个教师对象，教师对象有姓名和年龄、职称属性，要求按照教师的姓名将教师信息升序输出。

可以按照以下步骤实现：

1. 创建教师类，包括姓名、年龄和职称属性。

public class Teacher implements Comparable<Teacher> {
    private String name;
    private int age;
    private String title;

    public Teacher(String name, int age, String title) {
        this.name = name;
        this.age = age;
        this.title = title;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getTitle() {
        return title;
    }

    @Override
    public int compareTo(Teacher o) {
        return this.name.compareTo(o.getName());
    }
}

2. 创建TreeSet集合，并添加教师对象。

import java.util.TreeSet;

public class Main {
    public static void main(String[] args) {
        TreeSet<Teacher> teacherSet = new TreeSet<>();

        Teacher teacher1 = new Teacher("Tom", 35, "Associate Professor");
        Teacher teacher2 = new Teacher("Jerry", 28, "Lecturer");
        Teacher teacher3 = new Teacher("Alice", 40, "Professor");
        Teacher teacher4 = new Teacher("Bob", 30, "Assistant Professor");

        teacherSet.add(teacher1);
        teacherSet.add(teacher2);
        teacherSet.add(teacher3);
        teacherSet.add(teacher4);

        for (Teacher teacher : teacherSet) {
            System.out.println(teacher.getName() + ", " + teacher.getAge() + ", " + teacher.getTitle());
        }
    }
}

3. 运行程序，输出结果。

Alice, 40, Professor
Bob, 30, Assistant Professor
Jerry, 28, Lecturer
Tom, 35, Associate Professor

可以看到，教师信息按照姓名升序输出。