Im new to swing, please clear me this doubt.
import javax.swing.*;
import java.awt.*;
public class reference extends JFrame{
JPanel p1;
JButton b;
reference(){
b=new JButton("Click me");
setLayout(new FlowLayout());
add(b);
setVisible(true);
setSize(500,500);
}
public static void main(
String str[])
{
new reference();
}
}
I have just extended JFrame in the code, now when im calling the setLayout(), setVisible(), setSize() without any reference variable.
I want to know which objects setLayout(), setVisible(), setSize() is being invoked. Whether its JFrame or its superclass?
Please correct me if im wrong.
really confused.