program10_7.java

《A first book of java》by Gary J.Bronson 北大出版社

public class Book
{
  // class variable declaration section
  private String title;
  
  // class method definition section
  public Book(String booktitle)  // constructor
  {
    title = booktitle;
  }
  public void showTitle()
  {
    System.out.println("The title is " + title);    
  } 
  
  public static void main(String[] args)
  {
    Book book1 = new Book("Windows Primer");
    Book book2 = new Book("A Brief History of Western Civilization");
    
    book1.showTitle();
    book2.showTitle();
  }
}