package edu.xcdq;
/*
類的封裝
1 成員變量必須私有化 private修飾
2 使用getter setter 提供對(duì)外的訪問方式
*/

public class Demo {
private String name;
private int age;

//設(shè)置值  setter
public void setName(String name) {
    this.name = name;
}

//獲取值  getter
public String getName() {
    return this.name;
}

public void setAge(int age) {
    this.age = age;
}

public int getAge() {
    return this.age;
}

}
測(cè)試
package edu.xcdq;

public class testDemo {
public static void main(String[] args) {
/Demo demo = new Demo();
demo.name = "小明";
demo.age = 99 ;
System.out.println(demo.name);
System.out.println(demo.age);/

    Demo demo = new Demo();
    demo.setName("小明");
    demo.setAge(19);
    System.out.println(demo.getName());
    System.out.println(demo.getAge());
}

}