ChsCourseSelectionProgram/DataGrade.java at main · suhani-singh/ChsCourseSelectionProgram · GitHub

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import javax.swing.*;

import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;

public class DataGrade extends JFrame{

	final static int WINDOW_WIDTH = 500;
	final static int WINDOW_HEIGHT = 500;
	JButton ask;
	JFrame frame3;
	JFrame frameErrorNoGrade;
	JButton back;
	JButton next;
	Image image = null;
	JRadioButton g9;
	JRadioButton g10;
	JRadioButton g11;
	JRadioButton g12;

	public DataGrade() {
		frame3 = new JFrame("CHS Course Selection Program");
		frame3.setLayout(new GridLayout(6, 1));
		frame3.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

		//set size
		frame3.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);

		//make label
		String text = "Which grade are you going to in the next year?";
		JLabel label = new JLabel("<html><div style='text-align: center;'>" + text + "</div></html>");

		frame3.add(label);//adding button in JFrame

		//RadioButtons

		g9=new JRadioButton("Grade 9");
		g9.addActionListener(new choiceListener());
		g10=new JRadioButton("Grade 10");
		g10.addActionListener(new choiceListener());
		g11=new JRadioButton("Grade 11");
		g11.addActionListener(new choiceListener());
		g12=new JRadioButton("Grade 12");
		g12.addActionListener(new choiceListener());
		ButtonGroup bg=new ButtonGroup();
		bg.add(g9);
		bg.add(g10);
		bg.add(g11);
		bg.add(g12);
		frame3.add(g9);
		frame3.add(g10);
		frame3.add(g11);
		frame3.add(g12);

		//add Jpanel
		JPanel bottom = new JPanel();
		bottom.setLayout(new GridLayout(1, 2));

		//next button
		next =new JButton("Next");//creating instance of JButton
		next.addActionListener(new choiceListener());

		//back button
		back =new JButton("Back");//creating instance of JButton
		back.addActionListener(new choiceListener());

		bottom.add(back);//adding button in JFrame
		bottom.add(next);//adding button in JFrame

		frame3.add(bottom);
		frame3.setVisible(true);//making the frame visible
	}

	private class choiceListener implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			if (e.getSource() == back) {
				new MainPage();
				frame3.setVisible(false);
			}
			if(e.getSource() == next) {
				if (g9.isSelected() == true || g10.isSelected() == true || g11.isSelected() == true || g12.isSelected() == true) {
					new DataGradType();
					frame3.setVisible(false);
				} else {
					//error frame
					frameErrorNoGrade = new JFrame("CHS Course Selection Program");
					frameErrorNoGrade.setLayout(new GridLayout(1, 1));
					frameErrorNoGrade.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

					//set size
					frameErrorNoGrade.setSize(WINDOW_WIDTH/3, WINDOW_HEIGHT/3);

					//make label
					String text = "Error:" + "<br>" +
				              "You must select a grade!";
					JLabel label = new JLabel("<html><div style='text-align: center;'>" + text + "</div></html>");

					frameErrorNoGrade.add(label);//adding button in JFrame
					frameErrorNoGrade.setVisible(true);//making the frame visible
				}
			}
		}
	}

}