CIS 790 JAVA Distance Education QUIZ

Prof. Auciello's Virtual Classroom Quiz

9 - 11 class = Section 0175

Last.First Name: 


Q001:  RE:  6b 790 Hello World Applet.
EXPLAIN THESE LINES:


TextField textField1;              // define textfield1
name     = textField1.getText();
  




Q002:  RE:  Java Label Class.
These questions require professional-level skills, and our
goal is Mastery of Java, so now you know why I am asking them.


getText() is a method in the Label Class.
List at least one other method.  Tell me where you
found the information.  (What book?  What URL?)




Q003:  RE:  Creating New Instances.
https://auciello.tripod.com/hw10ja.html

Give a thorought explanation of the following statement,
using the word "instance".  Your answer should address at
least (3) properties of the Font.

 Font ftr24 = new Font("TimesRoman", Font.ITALIC, 24);




Q004:  EXPLAIN THIS CODE.
https://auciello.tripod.com/hw10ja.html


 Label namelabel1 = new Label(" Enter Your Name ",Label.RIGHT);
       add(namelabel1);  
       textField1 = new TextField(15);
       add(textField1);                    // add textfield to structure   





Q005:  EXPLAIN THIS CODE.
https://auciello.tripod.com/hw10ja.html

        if (name == null)
            name = "Harvey";




Q006:  EXPLAIN THIS CODE.
https://auciello.tripod.com/hw10ja.html

        if (name == null)
            name = "Harvey";




Q007:  EXPLAIN THIS CODE.
       https://auciello.tripod.com/hw10ja.html

      // step 5a.  get an an image. Insert yours if possible.
      Image gifname270 = getImage(getDocumentBase(),"MONICA.GIF");  

      EXPLAIN  getImage(getDocumentBase(),"MONICA.GIF");
      What Class Libraries are they from?             




Q008:  EXPLAIN THIS CODE.  WHAT DOES IT DO?
       https://auciello.tripod.com/hw10ja.html

      setBackground(Color.yellow);
      g.setColor(Color.blue);

      Name some other standard named colors.




Q009:  EXPLAIN THIS CODE.  WHAT DOES IT DO?
       HOW IS THE IMAGE AND THE STRING LOCATED ON THE SCREEN?
       EXPLAIN THE COORDINATES.       
       (https://auciello.tripod.com/hw10ja.html)

       g.drawImage(gifname270, 400, 65, this);
       g.drawString ("Hello World", 5, 145);




Q010:  EXPLAIN THIS CODE.  WHAT DOES IT DO?
       
       //  Step 6. "listen" when the "enter button" is clicked.
       public boolean action(Event event, Object arg)
         {                  
           name     = textField1.getText();    // get name
           repaint();
           return true;
         }  // end event-listening method.

       EXPLAIN "boolean", "action", "event", repaint(),
               and "return true"