Java基础-面向对象2：java信息的封装和隐藏

package com.troubleshooting.java;

        public class Person {
            public String name;
            private int age;
            //方法的声明
            public void personName() {
                System.out.println("name:" + name);
            }

            public int getAge() {
                return age;
            }
        //做个判断，如果符合条件输出正常值；不符合的话，输出默认
            public void setAge(int a) {
                if (a > 0 && a < 130) {
                    this.age = a;
                }

            }

        }
        package com.troubleshooting.java;

        public class TestPerson {
            public static void main(String[] args) {
                Person p1 = new Person();
                p1.name = "Tom";
                p1.setAge(22);

                p1.personName();
                System.out.println(p1.getAge());
            }
        }