Notes

package component_1;
import static java.awt.event.InputEvent.CTRL_DOWN_MASK;
import java.util.Arrays;
import java.util.Scanner;
import java.io.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.awt.*;
public class DisplayBox extends JFrame{
private JPanel Left;
private JPanel Right;

private JSplitPane splitPanel;
//MenuBar section
JMenuBar menu;
JMenu file;
JMenu help;

JMenuItem load;
JMenuItem save;
JMenuItem exit;
JMenuItem about;

public DisplayBox() {
top();
LeftRight();
}

public void top(){
setLayout(new FlowLayout());
//MENU BAR
menu = new JMenuBar();
setJMenuBar(menu);
//FILE
file = new JMenu("File");
menu.add(file);
//OPEN
load = new JMenuItem("Open");
load.setAccelerator(KeyStroke.getKeyStroke('O', CTRL_DOWN_MASK));
file.add(load);

loadEvent open = new loadEvent();
load.addActionListener(open);
//SAVE
save = new JMenuItem("Save");
save.setAccelerator(KeyStroke.getKeyStroke('S', CTRL_DOWN_MASK));
file.add(save);
//EXIT
exit = new JMenuItem("Exit");
exit.setAccelerator(KeyStroke.getKeyStroke('E', CTRL_DOWN_MASK));
file.add(exit);

exitEvent e = new exitEvent();
exit.addActionListener(e);
//HELP
help = new JMenu("Help");
menu.add(help);
//ABOUT
about = new JMenuItem("About");
about.setAccelerator(KeyStroke.getKeyStroke('A', CTRL_DOWN_MASK));
help.add(about);

aboutEvent ab = new aboutEvent();
about.addActionListener(ab);
}
//ActionListener for EXIT option
public class exitEvent implements ActionListener{
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}
//ActionListener for ABOUT option
public class aboutEvent implements ActionListener{
public void actionPerformed(ActionEvent ab) {
JOptionPane.showMessageDialog(null, "ABOUT US."
+ "n" + "PROGRAM LOADS FILES AND FOLDERS AND FROM AND DISPLAYS ON ANOTHER PANEL.","About this Application", JOptionPane.INFORMATION_MESSAGE);

}
}
//ActionListener for OPEN option
public class loadEvent implements ActionListener{
public void actionPerformed(ActionEvent open) {
try {
openFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
//Creating Panels
public void LeftRight() {
setLayout(new BorderLayout());
Left= new JPanel();
Left.setBackground(Color.WHITE);
Left.setMinimumSize(new Dimension(50,50));

Right= new JPanel();
Right.setBackground(Color.WHITE);
Right.setMinimumSize(new Dimension(50,50));

splitPanel=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,Left,Right);
splitPanel.setResizeWeight(0.5);
splitPanel.setBounds(100,100,100,100);
splitPanel.setOneTouchExpandable(true);
splitPanel.setContinuousLayout(true);
splitPanel.setAutoscrolls(true);
add(splitPanel,BorderLayout.CENTER);
}

public void openFile() throws IOException
{

JTextArea ta = new JTextArea(40, 30);


JFileChooser chooser = new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter("TEXT FILES", "txt", "text");
chooser.setFileFilter(filter);

int status = chooser.showOpenDialog(null);

if (status != JFileChooser.APPROVE_OPTION) {
JOptionPane.showMessageDialog(null, "No File Chosen");
}
else
{
File file = chooser.getSelectedFile();
Scanner scan = new Scanner(file);




String info = "";

String titleData="";
String YData="";
String XData="";
float XStart=0;
float XInterval=0;
float [] data;

while (scan.hasNext()) {
String temp = scan.nextLine().trim();

if(!temp.isEmpty() && !temp.equals(""))
{

info += temp + "n";
}}
String [] infoToken = info.split("n");

String [] title = infoToken[0].split(":");

if(title[0].equalsIgnoreCase("title")) {
titleData=title[1];
}
else {
JOptionPane.showMessageDialog(null, "Error!!!");
return;
}

String [] Ylabel = infoToken[1].split(":");
if(Ylabel[0].equalsIgnoreCase("ylabel")) {
YData=Ylabel[1];
}
else {
JOptionPane.showMessageDialog(null, "Error!!!");
return;
}

String [] Xlabel = infoToken[2].split(":");
if(Xlabel[0].equalsIgnoreCase("xlabel")) {
XData=Xlabel[1];
}
else {
JOptionPane.showMessageDialog(null, "Error!!!");
return;
}

String [] XStartlabel = infoToken[3].split(":");
if(XStartlabel[0].equalsIgnoreCase("xstart")) {

try {
float tmpfloat= Float.parseFloat(XStartlabel[1]);
XStart = tmpfloat;
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}

}
else {
JOptionPane.showMessageDialog(null, "Error!!!");
return;
}

String [] XIntervalLabel = infoToken[4].split(":");
if(XIntervalLabel[0].equalsIgnoreCase("xinterval")) {

try {
float tmpfloat= Float.parseFloat(XIntervalLabel[1]);
XStart = tmpfloat;
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}

}
else {
JOptionPane.showMessageDialog(null, "Error!!!");
return;
}

String [] dataLabel = infoToken[5].split(",");

float [] datavalue = new float[dataLabel.length];

for (int i=0;i<dataLabel.length;i++) {
try {
Float tmp = Float.parseFloat(dataLabel[i]);
datavalue[i]=tmp;
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return;
}
}

ta.setText(info);
ta.setBackground(Color.white);
ta.setForeground(Color.BLACK);
Left.add(ta);
}
}
//class Scrollbar{
//Scrollbar(){
//Frame f= new Frame("Scrollbar");
//Scrollbar s = new Scrollbar();
//..f.setSize(400,400);
//f.setLayout(null);
//f.setVisible(true);
//}

//}

public static void main(String args[]) {
DisplayBox frame = new DisplayBox();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500,500);
frame.setVisible(true);
frame.setTitle("Frame_GUI");
}

}