I have a JTextFiled and JTable that read data from text file.
I want to add a keyListener to my JTextFiled that when enter a number ‘ program should search my textfile and show lines that start with that number on my JTable.
My Text File:
26 thired 62 Yes
29 sixth 92 No
35 vff 53 No
33 oll 36 No
38 koole 86 No
For example, When i write “3” in textfield, my JTable should display this three lines on own:
35 vff 53 No
33 oll 36 No
38 koole 86 No
My Code:
public class BookPage extends JFrame implements KeyListener{
private AllBooks bookModel;
private JTable bTabel;
JTextField tf1;
public BookPage(){
bookModel=new AllBooks();
bTabel=new JTable(bookModel);
tf1=new JTextField(20);
tf1.addKeyListener(this);
JPanel panel= new JPanel();
JScrollPane scroolpane=new JScrollPane(bTabel);
panel.add(tf1);
panel.add(scroolpane);
this.setContentPane(panel);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setBounds(300, 60, 800, 600);
this.setVisible(true);
}
public static void main(String[] args){
new BookPage().setVisible(true);
}
@Override
public void keyTyped(KeyEvent e) {
String line=tf1.getText().trim();
SearchBook(line);
}
@Override
public void keyPressed(KeyEvent e) {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public void keyReleased(KeyEvent e) {
throw new UnsupportedOperationException("Not supported yet.");
}
public void SearchBook(String Bid){
File f=new File("AllBookRecords.txt");
try{
FileReader Bfr=new FileReader(f);
BufferedReader Bbr=new BufferedReader(Bfr);
String bs;
while( (bs=Bbr.readLine()) != null ){
String[] Ust=bs.split(" ");
String id=Ust[0];
String Bname=Ust[1];
String Bdate=Ust[2];
String borrowS=Ust[3];
if(id.equals(Bid.trim())){
bTabel.setValueAt(Bname, 10, 1);
}
}
}
catch (IOException ex) {
}
}
}
Second Class:
public class AllBooks extends AbstractTableModel{
BookInformation Binfos1=new BookInformation();
String[] Bcol=new String[]{"Id","Name","Date","Borrow Status"};
ArrayList<BookInformation> Bdata=new ArrayList<BookInformation>();
public AllBooks(){
try{
FileReader fr=new FileReader("AllBookRecords.txt");
BufferedReader br=new BufferedReader(fr);
String line;
while( (line=br.readLine()) != null){
Bdata.add(initializeBookInfos(line));
}
br.close();
}
catch(IOException ioe){
}
}
public static BookInformation initializeBookInfos(String myLine){
BookInformation Binit=new BookInformation();
String[] bookCellArray=myLine.split(" ");
Binit.setBookID(bookCellArray[0]);
Binit.setBookName(bookCellArray[1]);
Binit.setBookDate(bookCellArray[2]);
Binit.setBorrowStatus(bookCellArray[3]);
return Binit;
}
public void RemoveMyRow(int row){
if(RemoveBookFromFile(row)){
Bdata.remove(row);
fireTableRowsDeleted(row, row);
}
}
public boolean RemoveBookFromFile(int index){
File Mf=new File("AllBookRecords.txt");
File Tf=new File("Boutput.txt");
try{
BufferedReader Ubr=new BufferedReader(new FileReader(Mf));
PrintWriter Bpw=new PrintWriter(new FileWriter(Tf));
String line;
while( (line=Ubr.readLine()) != null ){
if(line.trim().length() == 0){
continue;
}
if(!line.startsWith(String.valueOf(getValueAt(index, 0)))){
Bpw.println(line);
}
}
Bpw.close();
Ubr.close();
Mf.delete();
Tf.renameTo(Mf);
return true;
} catch(FileNotFoundException e1){
return false;
}
catch(IOException ioe){
return false;
}
}
public void AddRow(BookInformation bookinfo){
if(WriteBooktofile(bookinfo.toString())){
Bdata.add(bookinfo);
fireTableRowsInserted(Bdata.size()-1, Bdata.size()-1);
}
else{
JOptionPane.showMessageDialog(null, "Unable Add To File"+bookinfo.getBookName());
}
}
public boolean WriteBooktofile(String bookc){
try{
File f=new File("AllBookRecords.txt");
FileWriter fw=new FileWriter(f.getAbsoluteFile(), true);
BufferedWriter bw=new BufferedWriter(fw);
bw.write(bookc);
bw.close();
return true;
}
catch(Exception e){
return false;
}
}
@Override
public String getColumnName(int col){
return Bcol[col];
}
@Override
public int getRowCount() {
if(Bdata !=null){
return Bdata.size();
}
else{
return 0;
}
}
@Override
public int getColumnCount() {
return Bcol.length;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
BookInformation binfo=Bdata.get(rowIndex);
Object value;
switch(columnIndex){
case 0:
value=binfo.getBookID();
break;
case 1:
value=binfo.getBookName();
break;
case 2:
value=binfo.getBookDate();
break;
case 3:
value=binfo.getBorrowStatus();
break;
default :
value="...";
}
return value;
}
}
Second Class:
public class BookInformation {
private String BookName;
private String BookDate;
private String BookID;
private String BorrowStatus;
public String getBookName() {
return BookName;
}
public void setBookName(String book_name) {
this.BookName = book_name;
}
public String getBookDate() {
return BookDate;
}
public void setBookDate(String book_date) {
this.BookDate = book_date;
}
public String getBookID() {
return BookID;
}
public void setBookID(String Book_id) {
this.BookID = Book_id;
}
@Override
public String toString(){
return BookID + " " + BookName+ " "
+ BookDate +" "+ BorrowStatus + "\n";
}
public String getBorrowStatus() {
return BorrowStatus;
}
public void setBorrowStatus(String borrowStat) {
BorrowStatus = borrowStat;
}
}
thanks for help.
I have to make some changes on your nativ code to make it works. Please note that i have not check the hole code of his functionality.
I use
instead of
public void keyTyped(KeyEvent e) {}because it doesn’t transmit the first valueYour old BookPage looks now as
the major changes are done in
public void SearchBook(String bid) {}if some is not clear feel free to ask me.In your AllBooks just a little change
Now your AllBookRecords.txt is with tab separated (\t)
There is a several way to deal with this issue but i don’t want to write every on my way but try to make your code works with little changes