program10_8.java

来自「《A first book of java》by Gary J.Bronson 」· Java 代码 · 共 29 行

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.print(title + '\n');   
  } 
  
  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();
 
    book2 = book1;
    System.out.println("\nAfter assignment the title referenced by book2 is:");
    book2.showTitle(); 
  }
}