This document discusses working with frames in Java. It explains the constructors of the Frame class, including Frame() and Frame(String title). It then describes several common methods for working with frames, such as setSize() to set dimensions, setVisible() to show or hide the frame, and setTitle() to set the title. It also covers closing a frame by calling setVisible(false) and implementing the windowClosing() method.

1. Working with Frame
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2. Objective
On completion of this period, you would be
able to know
• Working with Frames
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3. Recap
In the previous class, you have leant
• Fundamentals of Windows
• Frame, Panel class hierarchy
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4. Working with Frame
• The constructors of Frame are
– Frame( )
– Frame(String title)
• The first form creates a standard window that
does not contain a title
• The second form creates a window with the title
specified by title
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5. Methods of Frame
• There are several methods you will use when
working with Frame windows
• Setting the Window’s Dimensions
– The setSize( ) method is used to set the dimensions
of the window
• Its signature is shown here
– void setSize(int newWidth, int newHeight)
– void setSize(Dimension newSize)
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6. Methods of Frame contd..
• Hiding and Showing a
Window
– After a frame window
has been created, it will
not be visible until you
call
– setVisible( )
– Its signature is shown
here
• void setVisible(boolean
visibleFlag)
• The component is
visible if the argument to
this method is true
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7. Methods of Frame contd..
• Setting a Window’s Title
– You can change the title in a frame window
using setTitle( )
– It’s general form
• void setTitle(String newTitle)
• Here, newTitle is the new title for the window
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8. Methods of Frame contd..
• Closing a Frame Window
– The window must be removed, when closing
the window
• Window is removed by calling setVisible(false)
– To close the Frame you must implement the
windowClosing( ) method of the
WindowListener interface
– Inside windowClosing( ), you must remove the
window from the screen
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9. Summary
• We have learned
– The different constructors of Frame
– The methods of Frame class
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10. Quiz
1. Which one is not a method of Frame class ?
a) setVisible()
b) setSize()
c) setDimension()
d) setTitle()
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11. Frequently Asked Questions
1. List and explain the different constructors
of Frame class
2. List and explain the different methods of Frame class
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