getter/setter(访问器/设置器)

class Student{
    private int id;
    private String name;
      Student(int id,String name){
         this.id = id;
         this.name=name;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    
}
public class Main{
    public static void main(String[] args){
        Student s = new Student(1,"zhang");
        System.out.println(s.getId());//提取s的id
        System.out.println(s.getName());//提取s的name
        s.setId(2);//设置id为2
        s.setName("wang");//设置name为wang
        System.out.println(s.getId());
        System.out.println(s.getName());
    
    }