Define a class named Document that contains an instance variable of type Stringnamed text that...

Question

Define a class named Document that contains an instance variable of type String
named text that stores any textual content for the document. Create a method
named toString that returns the text field and also include a method to set
this value.
Next, define a class named Email that is derived from Document and includes instance
variables for the sender , recipient , and title of an email message. Implement
appropriate accessor(get) and mutator (set) methods. For example get and set method for sender variable. The body of the email message should
be stored in the inherited variable text . Redefine the toString method to concatenate
all text fields.
Similarly, define a class named File that is derived from Document and includes a
instance variable for the pathname . The textual contents of the file should be stored
in the inherited variable text . Redefine the toString method to concatenate all
text fields.
Finally, create several sample objects of type Email and File in your main method.
Test your objects by passing them to the following subroutine that returns true if
the object contains the specified keyword in the text property.
public static boolean ContainsKeyword(Document docObject,
String keyword)
{
if (docObject.toString().indexOf(keyword,0) >= 0)
return true ;
return false ;
}

Mohd · Accepted Answer

Test 2 lab/build.xml
 
     Builds, tests, and runs the project Test 2 lab.
     
    
Test 2 lab/build/classes/.netbeans_automatic_build
Test 2 lab/build/classes/.netbeans_update_resources
Test 2 lab/build/classes/Document.class
public synchronized class Document {
    private String name;
    public void Document(String);
    public void setName(String);
    public String toString();
}
Test 2 lab/build/classes/Email.class
public synchronized class Email extends Document {
    private String sender;
    private String recipient;
    private String title;
    public void Email(String, String, String, String);
    public String getSender();
    public void setSender(String);
    public String getRecipient();
    public void setRecipient(String);
    public String getTitle();
    public void setTitle(String);
    public String toString();
}
Test 2 lab/build/classes/File.class
public synchronized class File extends Document {
    private String pathName;
    public void File(String, String);
    public String getPathName();
    public String getName();
    public String toString();
}
Test 2 lab/build/classes/Test.class
public synchronized class Test {
    public void Test();
    public static void main(String[]);
    public static boolean ContainsKeyword(Document, String);
}
Test 2 lab/manifest.mf
Manifest-Version: 1.0
X-COMMENT: Main-Class will be added automatically by build
Test 2 lab/nbproject/build-impl.xml
 
     
         
             
                 
            
        
    
     
    
     
        
        
    
     
         
         
         
    
     
         
        
        
         
         
    
     
         
         
    
     
         
         
         
             
                 
                     
                
                 
            
        
         
             
                 
                 
                     
                
            
        
         
             
                 
                 
                 
            
        
         
             
                 
                     
                
                 
            
        
         
             
                 
                 
                 
                     
                
            
        
         
             
                 
                 
            
        
         
             
                 
                 
            
        
         
             
                 
                 
            
        
         
             
                 
                 
            
        
         
             
                 
            
        
         
             
                 
            
        
         
             
                 
                 
            
        
         
             
                 
                 
            
        
         
         
         
         
         
             
                 
            
        
         
         
         
         
         
         
             
                 
                 
                     
                
            
        
         
         
         
         
         
             
        
         
         
             
                 
                 
                     
                
            
        
         
             
        
         
             
                 
                 
                     
                
            
        
         
         
         
         
         
         
             
                 
                 
            
        
         
             
        
         
             
                 
                 
            
        
         
             
        
         
             
        
    
     
        
        
    
     
         Must set src.dir
         Must set test.src.dir
         Must set build.dir
         Must set dist.dir
         Must set build.classes.dir
         Must set dist.javadoc.dir
         Must set build.test.classes.dir
         Must set build.test.results.dir
         Must set build.classes.excludes
         Must set dist.jar
    
     
         
             
             
             
                 
            
        
    
     
         
             
             
             
             
             
             
             
             
             
             
             
             
                 
                 
                 
                 
                     
                         
                             
                        
                    
                     
                         
                    
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                
            
        
    
     
         
             
             
             
             
             
             
             
             
             
             
             
             
                 
                 
                 
                     
                         
                             
                        
                    
                     
                         
                    
                     
                     
                     
                     
                
            
        
    
     
         
             
             
             
             
                 
                     
                         
                    
                
            
        
         
             
             
                 Must set javac.

Define a class named Document that contains an instance variable of type String named text that stores any textual content for the document. Create a method named toString that returns the text field...

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