java44-引用参数传递

//引用参数传递
class test13 {
 public void seeBook(Book book){
 System.out.println("我正在看书,信息如下 ");
 System.out.println(book.getTitle());
 System.out.println(book.getPageSize());
 book.setTitle(“三国演义”);
 book.setPageSize(5000);
 }
 }
 class Book {
 private String title;
 private int pageSize;
 public String getTitle() {
     return title;
 }
 public void setTitle(String title) {
     this.title = title;
 }
 public int getPageSize() {
     return pageSize;
 }
 public void setPageSize(int pageSize) {
     this.pageSize = pageSize;
 }
 }
 public class test11 {
 public static void main(String[] args){
 test13 stu=new test13();
 Book book = new Book();
 book.setTitle(“红楼梦”);
 book.setPageSize(6000);
 stu.seeBook(book);
 System.out.println(book.getTitle());
 System.out.println(book.getPageSize());
 }
 }