在这段代码中，我们在下面的代码中称为类“文件面板”。它既不是静态内部也不是内部，那么我们称之为什么？我想使用 AST 解析器从 java 代码中检查这种类型的类
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;
}
}