【笔记】Eclipse and Java for Total Beginners—010

Lesson10 – Start on MyLibrary Class

• Create MyLibrary Test JUnit test
• Create testMyLibrary to test MyLibrary constructor
• Create MyLibrary constructor
• Introduce instanceof operator
• Introduce assertTrue method

  
    

   
      1 
   
     package
   
      org.totalbeginner.tutorial;

   
      2 
   
     

   
      3 
   
      
   
     import
   
      java.util.ArrayList;

   
      4 
   
     

   
      5 
   
      
   
     import
   
      junit.framework.TestCase;

   
      6 
   
     

   
      7 
   
      
   
     public
   
      
   
     class
   
      MyLibraryTest 
   
     extends
   
      TestCase {

   
      8 
   
      
   
     public
   
      
   
     void
   
      testMyLibrary() {

   
      9 
   
      MyLibrary ml 
   
     =
   
      
   
     new
   
      MyLibrary(
   
     "
   
     Test
   
     "
   
     );

   
     10 
   
      

   
     11 
   
      assertEquals(
   
     "
   
     Test
   
     "
   
     , ml.name);

   
     12 
   
      

   
     13 
   
      assertTrue(ml.books 
   
     instanceof
   
      ArrayList);

   
     14 
   
      assertTrue(ml.people 
   
     instanceof
   
      ArrayList);

   
     15 
   
      

   
     16 
   
      

   
     17 
   
      }

   
     18 
   
     

   
     19 
   
     }
  
    

  
    

   
      1 
   
     package
   
      org.totalbeginner.tutorial;

   
      2 
   
     

   
      3 
   
     
   
     import
   
      java.util.ArrayList;

   
      4 
   
     

   
      5 
   
     
   
     import
   
      org.totoalbeginner.tutorial.Person;

   
      6 
   
     

   
      7 
   
     
   
     public
   
      
   
     class
   
      MyLibrary {

   
      8 
   
     

   
      9 
   
      String name;

   
     10 
   
      ArrayList
   
     <
   
     Person
   
     >
   
      people;

   
     11 
   
      ArrayList
   
     <
   
     Book
   
     >
   
      books;

   
     12 
   
     

   
     13 
   
      
   
     public
   
      MyLibrary(String name) {

   
     14 
   
      
   
     this
   
     .name 
   
     =
   
      name;

   
     15 
   
      books 
   
     =
   
      
   
     new
   
      ArrayList
   
     <
   
     Book
   
     >
   
     ();

   
     16 
   
      people 
   
     =
   
      
   
     new
   
      ArrayList
   
     <
   
     Person
   
     >
   
     ();

   
     17 
   
      

   
     18 
   
      }

   
     19 
   
     

   
     20 
   
     }