Java访问实例变量和调用成员方法

package com.xuexi;
//访问实例变量和调用成员方法
public class Learn1 {
  int puppyAge;
  public Learn1(String name){
    // 这个构造器仅有一个参数：name
    System.out.println("小狗的名字是 : " + name );
  }

  public void setAge( int age ){
    puppyAge = age;
  }

  public int getAge( ){
    System.out.println("小狗的年龄为 : " + puppyAge );
    return puppyAge;
  }

  public static void main(String[] args){
  Learn1 myPuppy = new Learn1( "tommy" );
  myPuppy.setAge(1);
  myPuppy.getAge();
  System.out.println("变量值："+myPuppy.puppyAge);
}

}