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package test.po; //学生类 public class Student { //属性 private String name;//姓名 //分别设置age属性为不同访问修饰符修饰 /*public int age; int age; protected int age;*/ private int age;//年龄 private double weight;//体重 //无参构造方法 public Student() { //使用无参构造方法构造学员时,为其属性赋值 this.name="无名氏"; this.age=18; this.weight=50; } //构造方法重载 :带参构造方法 public Student(String name, int age, double weight) { this.name = name; this.weight = weight; if(age<18 || age>30){ System.out.println("***输入的年龄为:"+age+",该年龄不合法,将重置!***"); this.age=18; }else{ this.age = age; } } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { if(age<18 || age>30){ System.out.println("***输入的年龄为:"+age+",该年龄不合法,将重置!***"); return; } this.age = age; } public double getWeight() { return weight; } public void setWeight(double weight) { this.weight = weight; } //方法 //分别设置study()为不同访问修饰符修饰 //private void study(){ //void study(){ //protected void study(){ public void study(){ System.out.println(name+"说:好好学习,天天向上!"); } }
package test.oop.demo; import test.po.Student; public class TestStudent { //测试不同访问修饰符的不同作用域 public static void main(String[] args) { Student student=new Student(); //测试不同访问修饰符的方法或属性的作用域 /*student.study(); student.age;*/ } }
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原文地址:http://www.cnblogs.com/xiaotaoxu/p/5536454.html