Que- FocusEvent is subclass of which of these classes?
a. ComponentEvent
b. ContainerEvent
c. ItemEvent
d. InputEvent
Answer- ComponentEvent
Que- Which of these methods can be used to know the type of focus change?
a. typeFocus()
b. typeEventFocus()
c. isTemporary()
d. isPermanent()
Answer- isTemporary()
Que- Which of these is superclass of ContainerEvent class?
a. WindowEvent
b. ComponentEvent
c. ItemEvent
d. InputEvent
Answer- ComponentEvent
Que- Which of these events is generated when the window is closed?
a. TextEvent
b. MouseEvent
c. FocusEvent
d. WindowEvent
Answer- WindowEvent
Que- Which of these methods can be used to obtain the coordinates of a mouse?
a. getPoint()
b. getCoordinates()
c. getMouseXY()
d. getMouseCordinates()
Answer- getPoint()
Que- Which of these methods can be used to change location of an event?
a. ChangePoint()
b. TranslatePoint()
c. ChangeCordinates()
d. TranslateCordinates()
Answer- TranslatePoint()
Que- Which of these are integer constants of TextEvent class?
a. TEXT_CHANGED
b. TEXT_FORMAT_CHANGED
c. TEXT_VALUE_CHANGED
d. TEXT_sIZE_CHANGED
Answer- TEXT_VALUE_CHANGED
Que- Which of these methods is used to obtain the object that generated a WindowEvent?
a. getMethod()
b. getWindow()
c. getWindowEvent()
d. getWindowObject()
Answer- getWindow()
Que- MouseEvent is subclass of which of these classes?
a. ComponentEvent
b. ContainerEvent
c. ItemEvent
d. InputEvent
Answer- InputEvent
Que- Which of these methods is used to get x coordinate of the mouse?
a. getX()
b. getXCoordinate()
c. getCoordinateX()
d. getPointX()
Answer- getX()
Que- Which of these are constants defined in WindowEvent class?
a. WINDOW_ACTIVATED
b. WINDOW_CLOSED
c. WINDOW_DEICONIFIED
d. All of the mentioned
Answer- All of the mentioned
Que- Which of these is superclass of WindowEvent class?
a. WindowEvent
b. ComponentEvent
c. ItemEvent
d. InputEvent
Answer- ComponentEvent
Que- Which of these packages contains all the event handling interfaces?
a. java.lang
b. java.awt
c. java.awt.event
d. java.event
Answer- java.awt.event
Que- Which of these interfaces handles the event when a component is added to a container?
a. ComponentListener
b. ContainerListener
c. FocusListener
d. InputListener
Answer- ContainerListener
Que- Which of these interfaces define a method actionPerformed()?
a. ComponentListener
b. ContainerListener
c. ActionListener
d. InputListener
Answer- ActionListener
Que- Which of these interfaces define four methods?
a. ComponentListener
b. ContainerListener
c. ActionListener
d. InputListener
Answer- ComponentListener
Que- Which of these interfaces define a method itemStateChanged()?
a. ComponentListener
b. ContainerListener
c. ActionListener
d. ItemListener
Answer- ItemListener
Que- Which of these methods will respond when you click any button by mouse?
a. mouseClicked()
b. mouseEntered()
c. mousePressed()
d. all of the mentioned
Answer- all of the mentioned
Que- Which of these methods will be invoked if a character is entered?
a. keyPressed()
b. keyReleased()
c. keyTyped()
d. keyEntered()
Answer- keyTyped()
Que- Which of these methods is defined in MouseMotionAdapter class?
a. mouseDragged()
b. mousePressed()
c. mouseReleased()
d. mouseClicked()
Answer- mouseDragged()
Que- Which of these is a superclass of all Adapter classes?
a. Applet
b. ComponentEvent
c. Event
d. InputEvent
Answer- Applet
Que- Which class is used to generate random number?
a. java.lang.Object
b. java.util.randomNumber
c. java.util.Random
d. java.util.Object
Answer- java.util.Random
Que- Which method is used to generate boolean random values in java?
a. nextBoolean()
b. randomBoolean()
c. previousBoolean()
d. generateBoolean()
Answer- nextBoolean()
Que- What is the return type of Math.random() method?
a. Integer
b. Double
c. String
d. Boolean
Answer- Double
Que- Random is a final class?
a.TRUE
b.FALSE
c.Nothing Can be Said
d.None of the mentioned
Answer-FALSE
Que- What is the range of numbers returned by Math.random() method?
a. -1.0 to 1.0
b. -1 to 1
c. 0 to 100
d. 0.0 to 1.0
Answer- 0.0 to 1.0
Que- How many bits are used for generating random numbers?
a.32
b.64
c.48
d.8
Answer-48
Que- What will be the output of the following Java code snippet? int a = random.nextInt(15) + 1;
a. Random number between 1 to 15, including 1 and 15
b. Random number between 1 to 15, excluding 15
c. Random number between 1 to 15, excluding 1
d. Random number between 1 to 15, excluding 1 and 15
Answer- Random number between 1 to 15, including 1 and 15