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我有一個JTextFiled和的JTable讀取文本文件中的數據。JTable中顯示JTextFiled搜索結果
我想一個KeyListener的添加到我的JTextFiled，當輸入一個號碼「的程序應搜索的是與我的JTable號開始我的文本文件，並顯示線。
我的文本文件：
26 thired 62 Yes
29 sixth 92 No
35 vff 53 No
33 oll 36 No
38 koole 86 No
例如，當我寫 「3」，在文本框，我的JTable應該顯示在自己的這三條線：
35 vff 53 No
33 oll 36 No
38 koole 86 No
我的代碼：
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) {
}
}
}
第二級：
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;
}
}
二等：
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;
}
}
感謝您的幫助。
請也張貼書信息類 – 2013-02-17 19:18:42
@FestusTamakloe我添加BookInformation類 – Sajad 2013-02-17 19:25:24
我的第一個建議是避免關鍵偵聽器並使用DocumentFilter。我的第二個建議是如果可以，將文本文件加載到內存中，或者將其存儲在內存數據庫中，這會使搜索更加簡單。在搜索用戶輸入時，還會阻止EDT。在最壞的情況下，您將不得不搜索文件的全部內容以查找每個關鍵筆劃，這可能會導致UI停止對用戶進行響應。如果可能的話，最好是以某種方式建立文件索引（假設數字未排序），以便快速查找 – MadProgrammer 2013-02-17 19:35:49