Demo.java

public class Demo {
    private String name;
    private String sex;
    private Integer age;
    private Double height;
    
    public String getName(){
      return this.name;
    }
    public void setName(String name){
      this.name=name;
    }
    public String getSex(){
      return this.sex;
    }
    public void setSex(String sex){
      this.sex=sex;
    }
    public Integer getAge(){
      return this.age;
    }
    public void setAge(Integer age){
      this.age=age;
    }
  
  }