how to button creation in java and check box creation in java program

Button Creation and Checkbox Creation in java programming

 

• Button Creation steps

The write a java program to demonstrate the concept of Button Creation.

 

The Following Button Creation Procedure Steps:

• Step 1: Import Java . awt , applet and out Event package.
• Step 2: Define a Class by name “ BUTTON DEMO ” that Extend “ Applet ” Class and implements Action list interface.
• Step 3:  Declare int () and object to “ Button ” Class.
• Step 4: Odd Button to applet object add ()
• Step 5: Add action listener to the object of the button red button Add action listener this.
• Step 6: One ride the  action Performed ( Active )
• Step 7: Invoke get Action Commands
• Step 8: using if block check the condition and Execute the result.
• Step 9: The write HTML applet tag to view in applet viewer.

For Example: Button Creation Program

Import java.awt.*;

Import java.applet.*;

Import java.awt.event.ActionEvent;

Import java.awt.event.ActionListener;

/*              <applet code=”BUTTONDEMO” width=400 height=400>

</applet>      */

Public class ButtonDemo extends Applet implements ActionListener

{

Public void init()

{
Button redButton = new Button(“red”);

Button blueButton = new Button(“blue”);

Button greenButton = new Button(“Green”);

Button removeColorButton = new Button(“Remove Color”);

add(redButton);

add(blueButton);

add(greenButton);

add(removeColorButton);

 

redButton.addActionListener(this);

blueButton.addActionListener(this);

greenButton.addActionListener(this);

removeColorButton.addActionListener(this);

}

Public void actionPerformed(ActionEvent ae)

{

String action=ae.getActionCommand();

If(action.equals(“Red”))

{

setBackground(Color.red);

}

If (action . equals (“Blue”))

{

setBackground (Color.blue);

}

If (action . equals (“Green”))

{

setBackground (Color.green);

}

if (action . equal(“Remove color”))

{

setBackground (Color.white);

}
}
}

[ OUTPUT: ]

E:\AR\java>javac ButtonDemo.java

E:\AR\java>appletviewer ButtonDemo.java

RESULT:

[ Thus the Program Successfully Executed. ]

 

The Following  Checkbox Creation steps

The write a java program to Demonstrate the concept of Checkbox Creation.

• Checkbox Creation procedure step:-

Step 1: import  java awt , applet and out event package.

Step 2: Define a class by name “ Check Box Demo ” that Extends “ Applet “class and implements item interface.

Step 3: Declare int () and create object to Choose box class and in taker two parameters Check Box (“ C programming ” , false )

Step 4: Add the Check box to applet using add()

Step 5: Invoke  add tem listener (this) to add the item listener to the Check box.

Step 6:  Declare paint Graphic

Step 7: Invoke g .draw string (c box c. get ) + ” :  “ +  c box c get state () 50 , 80 ); to display the status of the Check box.

Step 8: one ride on the method of interface item changed (Item enter I e)

Step 9: Declare re paint();

Step 10: The write HTML tag to view in applet View.

For Example: Checkbox Creation program

Import java.awt.*;

Import java.applet.*;

Import java.awt.event.*;

/*           <applet code=”Checkboxdemo” width=600 height=400>

</applet>        */

Public class CheckboxDemo extends Applet implements itemListener

{

Checkbox cboxC =null;

Checkbox cboxCpp =null;

Checkbox cboxjava =null;

Checkbox cboxDotNet =null;

Checkbox cboxphp =null;

Public void init()

{

CboxC = new Checkbox(“C programming”, false);

CboxCpp = new Checkbox(“C++ programming”, false);

CboxJava =new Checkbox(“Java programming”, false);

CboxDotNet = new Checkbox(“Dot Net”, false);

Cboxphp = new Checkbox(“PHP”, false);

add(cboxC);

add(cboxCpp);

add(cboxJava);

add(cboxDotNet);

add(cboxphp);

cboxC.additemListener(this);

cboxCpp.additemListener(this);

cboxJava.additemListener(this);

cboxDotNet.additemListener(this);

cboxphp.additemListener(this);

}

Public void paint(Graphics g)

{

g . drawString(cboxC.getLabel() + ” : ” + cboxC.getState(),150,80 );

g . drawString(cboxCpp.getLabel() + ” : ” + cboxCpp.getState(), 150, 120 );

g . drawString(cboxJava.getLabel() + ” : ” + cboxJava.getState(),150,160 );

g . drawString(cboxDotNet.getLabel() + ” : ” + cboxNet.getState(),150,200 );

g . drawString(cboxphpetLabel()  +  ” : ” + cboxphp.getState(),150,240 );

}

Public void itemStateChanged(itemEvent ie)

{

Repaint();

}
}

[ OUTPUT : ]

E: \AR\java>javac CheckboxDemo.java

E: \AR\java>appletviewer CheckboxDemo.java

 

RESULT:

[ Thus the Program Successfully Executed. ]

 

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