package mingri.chapter_6;

 public class BookTest {

     public String name;

     public void setName(String name) {

         this.name = name;

     }

     public String getName() {

         int id = 0;     // 局部变量，如果将id这个局部变量的初始值去掉，编译器将出现错误

         setName("Java");

         return id + this.name;

     }

     public static void main(String[] args) {

         BookTest book = new BookTest();

         String bookName = book.getName();

         System.out.println("bookName: " + bookName);

     }

 }