java-swing - JAVA DEVELOPMENT Training By Om Sir

(1)Frame example:

import javax.swing.*;
public class swing1
{
public static void main(String []args)
{
MyFrame jf=new MyFrame("MYFRAME");
}
}
class MyFrame extends JFrame
{
MyFrame(String s)
{
super(s);
setSize(500,500);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}

save above code as swing1.java

& comiple it by following way
D:\>javac swing1.java

then run it by following way

D:\>java swing1

(2)Label example:

import javax.swing.*;

public class swingex1

{

public static void main(String []args)

{

MyFrame jf=new MyFrame("FRAME");

}

class MyFrame extends JFrame

{

JLabel l1;

MyFrame(String s)

{

l1=new JLabel("HELLO");

add(l1);

setVisible(true);

setSize(400,400);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

save above code as swingex1.java

& compile & run it

D:\>javac swingex1.java

D:\>java swingex1

(3) JTextField ,JTextArea , PasswordField:

import javax.swing.*;
public class Txt
{
public static void main(String [] args)
{
myframe f=new myframe();
}
}
class myframe extends JFrame
{
JTextField tf1,tf2,tf3;
JTextArea ta1,ta2;
JPasswordField pwd;
JPanel p;
myframe()
{
p=new JPanel();
tf1=new JTextField();
p.add(tf1);
tf2=new JTextField("it is text");
p.add(tf2);
tf3=new JTextField("it is second text filed", 20);
p.add(tf3);
add(p);
ta1=new JTextArea("it is text area",10,10);
p.add(ta1);
ta2=new JTextArea("second text area",20,20);
p.add(ta2);
pwd=new JPasswordField(20);
p.add(pwd);
pwd.setEchoChar('@');
setVisible(true);
setSize(700,700);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}

D:\>javac Txt.java

D:\>java Txt

Java swing Event handling Examples :-

import javax.swing.*;

import java.awt.event.*;

public class Main

{

public static void main(String[] args)

{

JFrame frame=new JFrame("Button Click Example");

final JTextField text_field=new JTextField(); //JTextField object

text_field.setBounds(50,100, 150,20);

JButton click_button=new JButton("Click Me!!!"); //JButton object

click_button.setBounds(20,50,75,30);

click_button.addActionListener(new ActionListener()

{ //add an event and take action

public void actionPerformed(ActionEvent e){

text_field.setText("You Clicked the button");

}

});

//add button and textfield to the frame

frame.add(click_button);frame.add(text_field);

frame.setSize(400,400);

frame.setLayout(null);

frame.setVisible(true);

}

output:-