Answer Posted / shivaprasad
Multiple inheritance is not allowed in java because it creates
DIAMOND PROBLEM.
DIAMOND PROBLEM: Suppose classes B and C extend A and
class D extends to both B and C(multiple inheritance). Now,
if D calls a method in A then it does not know from which
class it has to inherit(either B or C). This is called
diamond problem.
| Is This Answer Correct ? | 8 Yes | 1 No |
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Draw a UML class diagram for the code fragment given below: public class StringApplet extends Applet { private Label sampleString; private Button showTheString; private ButtonHandler bHandler; private FlowLayout layout; public StringApplet() { sampleString = new Label(" "); showTheString = new Button (" Show the String"); bHandler = new ButtonHandler(); layout = new FlowLayout(); showTheString.addActionListener(bHandler); setLayout(layout); add(sampleString); add(showTheString); } class ButtonHandler implements ActionListener { public void actionPerformed(ActionEvent e) { samplestring.setText("Good Morning"); } } } Note: The methods need not be indicated on the diagram.
