在java中创建一个叫做Student的类，对象属性：姓名、年龄、性别、身高，对象方法：说话、计算加法、年龄长一岁，类属性：学校名称；类方法：学习封装所有对象属性，编写属性的getter和setter方法

public class Student {
    private String name;
    private int age;
    private String gender;
    private double height;
    private static String schoolName = "XXX学校";

    public Student(String name, int age, String gender, double height) {
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.height = height;
    }

    public void speak() {
        System.out.println("大家好，我叫" + name + "，今年" + age + "岁，身高" + height + "米，是一个" + gender);
    }

    public int add(int a, int b) {
        return a + b;
    }

    public void increaseAge() {
        age++;
    }

    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 getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public double getHeight() {
        return height;
    }

    public void setHeight(double height) {
        this.height = height;
    }

    public static String getSchoolName() {
        return schoolName;
    }

    public static void setSchoolName(String schoolName) {
        Student.schoolName = schoolName;
    }
}