1.　　定义一个学生类(Student)，属性有private的名字(name), public的年龄(age),专业（specialty）和封装name属性的方法：setName(),getName()，getspecialty()编写Application，创建一个学生对象，设置name和age属性值，然后调用一个方法（此方法将对象作为参数传递，在方法中打印出学生的名字name和年龄age）。（学生类仅包含静态成员变量和方法。）-1. The definition of a student class (Student), attributes the name of a private (name), public age (age), professional (specialty) and package name attribute method: setName (), getName (), getspecialty () the preparation of Application to create a student object, set the name and age property value, and then call a method (this method the object passed as a parameter in the method to print out the names of the students name and age of age). (Student class contains only static member variables and methods.)