Question 5 What is the default layout manager for a JFrame object? flow border O grid O gridbag Question 6 What is the default layout manager for a JPanel object? flow O gridbag border O grid

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Refer to the class shown below which compiles with no errors and runs with no exceptions but does
not produce correct results. Answer the questions which follow.
01
02
Assume correct import and package statements
*/
03
04
05
public class HelloGoodBye extends JPanel {
06
/** A button to say hello. */
private final JButton myHelloButton;
07
08
09
/** A button to say goodbye. */
private final JButton myGoodbyeButton;
10
11
12
13
/** A label to display the message. */
private final JLabel myMessageLabel;
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15
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/**
17
Initializes all of the fields.
18
public HelloGoodBye() {
super();
myHelloButton = new JButton("Hello");
myGoodbyeButton = new JButton("Goodbye");
myMessagelabel = new JLabel("Message");
}
19
20
21
22
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/**
Lay out the components and makes this frame visible.
*/
public void setUpComponents() {
setlayout(new Borderlayout());
26
27
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32
final JPanel labelPanel = new JPanel();
33
labelPanel.add(myMessageLabel);
add(labelPanel, Borderlayout.SOUTH);
34
35
final JPanel buttonPanel = new JPanel();
buttonPanel.add(myHelloButton);
buttonPanel.add(myGoodbyeButton);
36
37
38
39
40
add(buttonPanel, Borderlayout.NORTH);
}
41
42
43
44
}
Transcribed Image Text:Refer to the class shown below which compiles with no errors and runs with no exceptions but does not produce correct results. Answer the questions which follow. 01 02 Assume correct import and package statements */ 03 04 05 public class HelloGoodBye extends JPanel { 06 /** A button to say hello. */ private final JButton myHelloButton; 07 08 09 /** A button to say goodbye. */ private final JButton myGoodbyeButton; 10 11 12 13 /** A label to display the message. */ private final JLabel myMessageLabel; 14 15 16 /** 17 Initializes all of the fields. 18 public HelloGoodBye() { super(); myHelloButton = new JButton("Hello"); myGoodbyeButton = new JButton("Goodbye"); myMessagelabel = new JLabel("Message"); } 19 20 21 22 23 24 25 /** Lay out the components and makes this frame visible. */ public void setUpComponents() { setlayout(new Borderlayout()); 26 27 28 29 30 31 32 final JPanel labelPanel = new JPanel(); 33 labelPanel.add(myMessageLabel); add(labelPanel, Borderlayout.SOUTH); 34 35 final JPanel buttonPanel = new JPanel(); buttonPanel.add(myHelloButton); buttonPanel.add(myGoodbyeButton); 36 37 38 39 40 add(buttonPanel, Borderlayout.NORTH); } 41 42 43 44 }
Question 5
What is the default layout manager for a JFrame object?
flow
O border
O grid
O gridbag
Question 6
What is the default layout manager for a JPanel object?
O flow
O gridbag
O border
grid
Transcribed Image Text:Question 5 What is the default layout manager for a JFrame object? flow O border O grid O gridbag Question 6 What is the default layout manager for a JPanel object? O flow O gridbag O border grid
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