in this code the classwhat we called class "filepanel" in below code.it is neither static inner nor inner then what we called it?i want to check for such type of classes from java code using AST parser
public class choosefile extends JFrame implements ActionListener{
private static final long serialVersionUID = 1L;
JButton file,go;
private Dimension preferredDimensions;
public choosefile(){
preferredDimensions = new Dimension(800, 700);
JFrame frame=new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
filepanel filepnl=new filepanel();
frame.setPreferredSize(preferredDimensions);
frame.add(filepnl);
frame.pack();
frame.setLocation(50,0);
frame.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e)
{
}
public static void main(String[] args)
{
new choosefile();
}
}
class filepanel extends JPanel implements ActionListener{
private static final long serialVersionUID = 1L;
JScrollPane scroll,scroll1;
JScrollBar bar;
JButton file,go;
JTextField txtbx;
JTextArea txtarea1,txtarea2;
public filepanel()
{
try {
initComponents();
} catch (Exception ex) {
JOptionPane.showMessageDialog(null, "Could not load frame", "Main Menu Error: 0x004", JOptionPane.ERROR_MESSAGE);
System.exit(4);
}
}
private void initComponents() throws Exception {
setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
file=new JButton("Choose File..");
// JButton button1 = new JButton("1");
file.addActionListener(this);
c.fill = GridBagConstraints.PAGE_START;
c.gridx = 0;
c.gridy = 0;
add(file, c);
txtbx = new JTextField(" ");
txtbx.setPreferredSize(new Dimension(150, 20));
c.fill = GridBagConstraints.CENTER;
c.weightx = 0.0;
c.gridx = 1;
c.gridy = 0;
add(txtbx , c);
go = new JButton(" Go ");
go.addActionListener(this);
go.setPreferredSize(new Dimension(5, 20));
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 0.5;
c.gridx = 2;
c.gridy = 0;
//c.insets = new Insets(0,350,0,0);
add(go, c);
txtarea1=new JTextArea();
scroll = new JScrollPane(txtarea1);
scroll.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
txtarea1.setPreferredSize(new Dimension(250, 620));
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 0.5;
c.gridx = 0;
c.gridy = 1;
c.insets = new Insets(0,10,0,0);
add(scroll, c);
txtarea2=new JTextArea();
scroll1 = new JScrollPane(txtarea2);
scroll1.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
txtarea2.setPreferredSize(new Dimension(250, 620));
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 0.5;
c.gridx = 1;
c.gridy = 1;
c.insets = new Insets(0,3,0,0);
add(scroll1, c);
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == file)
{
JFileChooser fileopen = new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter(".java", ".java");
fileopen.addChoosableFileFilter(filter);
int ret = fileopen.showDialog(null, "Open file");
if (ret == JFileChooser.APPROVE_OPTION) {
File file = fileopen.getSelectedFile();
String text = readFile(file);
txtarea1.setText(text);
text=search(file);
txtarea2.setText(text);
}
}
}
private String readFile(File file2)
{
StringBuffer fileBuffer = null;
String fileString = null;
String line = null;
try
{
FileReader in = new FileReader(file2);
BufferedReader brd = new BufferedReader(in);
fileBuffer = new StringBuffer();
while ((line = brd.readLine()) != null) {
fileBuffer.append(line).append( System.getProperty("line.separator"));
}
in.close();
fileString = fileBuffer.toString();
} catch (IOException e) {
return null;
}
return fileString;
}
String search(File file1){
//JTree tree = new JTree();
StringBuffer fileBuffer = null;
String fileString = null;
try{
// Open the file that is the first
// command line parameter
FileInputStream fstream = new FileInputStream(file1);
BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
String strLine;
fileBuffer = new StringBuffer();
//Read File Line By Line
while ((strLine = br.readLine()) != null){
if (strLine.contains("import")){
fileBuffer.append("The import library is: " + strLine.substring(strLine.indexOf("import ") + 6, strLine.indexOf(";"))).append( System.getProperty("line.separator"));
//System.out.println ("The import library is: " + strLine.substring(strLine.indexOf("import ") + 6, strLine.indexOf(";")));
}
if (strLine.contains("class")){
fileBuffer.append("The class name is: " + strLine.substring(strLine.indexOf("class ") + 6, strLine.indexOf("{"))).append( System.getProperty("line.separator"));
// System.out.println ("The class name is: " + strLine.substring(strLine.indexOf("class ") + 6, strLine.indexOf("{")));
}
if (strLine.contains("int")){
fileBuffer.append("There is an int variable named: " + strLine.substring(strLine.indexOf("int ") + 4, strLine.indexOf(";"))).append( System.getProperty("line.separator"));
//System.out.println("There is an int variable named: " + strLine.substring(strLine.indexOf("int ") + 4, strLine.indexOf(";")));
}
if (strLine.contains("//")){
fileBuffer.append("Comment contains: " + strLine.substring(strLine.indexOf("//") + 2));
//System.out.println("Comment contains: " + strLine.substring(strLine.indexOf("//") + 2));
}
// fileBuffer.append(strLine).append( System.getProperty("line.separator"));
}
//Close the input stream
in.close();
fileString = fileBuffer.toString();
}
catch (Exception e){
//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
return fileString;
}
}
