//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()); } }