Why there are some null interface in java? What does it mean?

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What is the default value of the local variables?

0 Answers  

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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.

0 Answers  

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Q) I have a ArrayList object, in that object i have added 5 integer values, 5 float values, 5 string values. Now question is how can delete particular type of data ( i.e all int values or all float values or string values) in that list object at a time?

3 Answers   Aricent,

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explain the life cycle of thread?

10 Answers   CTS, NIIT, TCS,

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What is access modifiers?

1 Answers   Cap Gemini,

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What do you mean by of string::valueof expression in java 8?

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Why string is not a wrapper class?

0 Answers  

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what is the purpose of class "Object" which is base class for all classes?

3 Answers  

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how to use finalize()Method to resources

4 Answers   TCS,

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Difference between arraylist and vector.

0 Answers  

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0 Answers   L&T,

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