create jframe java code example

Example 1: java simple jframe example

import javax.swing.*;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.*;
 
public class JFrameExample{
     
    public static void main(String[] args){
        // Create frame with title Registration Demo
        JFrame frame= new JFrame(); 
        frame.setTitle("JFrame Demo");
        frame.pack();
        frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

Example 2: create jframe java

public JFrame frame = new JFrame();//creating jframe

Class main(){
public static void main(String[] args){
  frame.setSize(200,200); //setting size
  frame.setVisable(true); //sets visability 
  frame.setDefaultCloseOperation.(JFrame.EXIT_ON_CLOSE); //allow jframe to close when clicked

}
  }