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This tutorial will teach you how to create a program in java that has a KeyPress or KeyStroke.
So, now let's start this tutorial!
1. Open JCreator or NetBeans and make a java program with a file name of keyStroke.java.
2. Import the following package library:
3. We will initialize variables in our Main, variable frame as JFrame, button as JButton, and ACTION_KEY as String.
4. Create an ActionEvent to your button and will print "The spacebar button is pressed!". Have this code below:
5. To have a space keytroke used the KeyStroke class with the getKeyStroke class.
To provide an action on the button when pressing the spacebar, have this code below:
6. Lastly, add the button, set the size, visibility, and the close operation of the frame. Have this code below:
Output:
Here's the full code of this tutorial:
For more inquiries and need programmer for your thesis systems in any kind of programming languages, just contact my number below.
Best Regards,
Engr. Lyndon Bermoy
IT Instructor/System Developer/Android Developer/Freelance Programmer
Mobile: 09488225971
Landline: 826-9296
E-mail:[email protected]
Add and Follow me on Facebook: https://www.facebook.com/donzzsky
Visit and like my page on Facebook at: https://www.facebook.com/BermzISware
Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.
Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.
FOR YOUR OWN SAFETY, PLEASE:
1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
Download
So, now let's start this tutorial!
1. Open JCreator or NetBeans and make a java program with a file name of keyStroke.java.
2. Import the following package library:
- import
java.awt.event.*
;
// used to access the ActionEvent clas
- import
javax.swing.*
;
//used to access the AbstractAction,Action,ActionMap,InputMap,JButton,JComponent,JFrame, and KeyStroke
3. We will initialize variables in our Main, variable frame as JFrame, button as JButton, and ACTION_KEY as String.
- String
ACTION_KEY =
"theAction"
;
- JFrame
frame =
new
JFrame
(
"KeyStroke Sample"
)
;
- JButton
button =
new
JButton
(
"Press the SpaceBar"
)
;
4. Create an ActionEvent to your button and will print "The spacebar button is pressed!". Have this code below:
- Action
actionListener =
new
AbstractAction
(
)
{
- public
void
actionPerformed(
ActionEvent
actionEvent)
{
- JButton
source =
(
JButton
)
actionEvent.getSource
(
)
;
- System
.out
.println
(
"The spacebar button is pressed!"
)
;
- }
- }
;
5. To have a space keytroke used the KeyStroke class with the getKeyStroke class.
To provide an action on the button when pressing the spacebar, have this code below:
- InputMap
inputMap =
button.getInputMap
(
JComponent
.WHEN_IN_FOCUSED_WINDOW
)
;
- inputMap.put
(
space, ACTION_KEY)
;
- ActionMap
actionMap =
button.getActionMap
(
)
;
- actionMap.put
(
ACTION_KEY, actionListener)
;
- button.setActionMap
(
actionMap)
;
6. Lastly, add the button, set the size, visibility, and the close operation of the frame. Have this code below:
- frame.getContentPane
(
)
.add
(
button)
;
- frame.setDefaultCloseOperation
(
JFrame
.EXIT_ON_CLOSE
)
;
- frame.setSize
(
400
, 200
)
;
- frame.setVisible
(
true
)
;
Output:
Here's the full code of this tutorial:
- import
java.awt.event.*
;
// used to access the ActionEvent clas
- import
javax.swing.*
;
//used to access the AbstractAction,Action,ActionMap,InputMap,JButton,JComponent,JFrame, and KeyStroke
- public
class
keyStroke {
- public
static
void
main(
String
[
]
a)
{
- String
ACTION_KEY =
"theAction"
;
- JFrame
frame =
new
JFrame
(
"KeyStroke Sample"
)
;
- JButton
button =
new
JButton
(
"Press the SpaceBar"
)
;
- Action
actionListener =
new
AbstractAction
(
)
{
- public
void
actionPerformed(
ActionEvent
actionEvent)
{
- JButton
source =
(
JButton
)
actionEvent.getSource
(
)
;
- System
.out
.println
(
"The spacebar button is pressed!"
)
;
- }
- }
;
- KeyStroke
space =
KeyStroke
.getKeyStroke
(
' '
)
;
- InputMap
inputMap =
button.getInputMap
(
JComponent
.WHEN_IN_FOCUSED_WINDOW
)
;
- inputMap.put
(
space, ACTION_KEY)
;
- ActionMap
actionMap =
button.getActionMap
(
)
;
- actionMap.put
(
ACTION_KEY, actionListener)
;
- button.setActionMap
(
actionMap)
;
- frame.getContentPane
(
)
.add
(
button)
;
- frame.setDefaultCloseOperation
(
JFrame
.EXIT_ON_CLOSE
)
;
- frame.setSize
(
400
, 200
)
;
- frame.setVisible
(
true
)
;
- }
- }
For more inquiries and need programmer for your thesis systems in any kind of programming languages, just contact my number below.
Best Regards,
Engr. Lyndon Bermoy
IT Instructor/System Developer/Android Developer/Freelance Programmer
Mobile: 09488225971
Landline: 826-9296
E-mail:[email protected]
Add and Follow me on Facebook: https://www.facebook.com/donzzsky
Visit and like my page on Facebook at: https://www.facebook.com/BermzISware
Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.
Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.
FOR YOUR OWN SAFETY, PLEASE:
1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
Download
