Bai 1

package cuoiki; import java.awt.TextArea; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.InputStreamReader; import java.sql.Connection; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JTextField; import java.sql.DriverManager; import java.sql.Statement; /** * * @author Tonqt Thonq */ public class Bai1 extends JFrame { JTextField file_name; JButton load; TextArea data; public static void main(String[] args) { new Bai1(); } public Bai1(){ this.setTitle("Bai 1"); this.setBounds(400,500,400,400); this.setLayout(null); file_name = new JTextField(10); file_name.setBounds(10, 10, 250, 30); this.add(file_name); load = new JButton("Load data"); load.setBounds(270, 10, 100, 30); this.add(load); data = new TextArea(); data.setBounds(10, 40, 370, 320); data.setEditable(false); this.add(data); this.setDefaultCloseOperation(EXIT_ON_CLOSE); this.setVisible(true); addLtn(); } private void addLtn() { load.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String fn = file_name.getText().toString(); String readdata = new String(""); try{ File f = new File(fn); FileInputStream fis = new FileInputStream(f); BufferedReader bf = new BufferedReader(new InputStreamReader(fis)); String temp; while((temp = bf.readLine())!=null) readdata+=(temp+"\n"); data.setText(readdata); } catch(Exception emsg){ data.setText(emsg.toString()); } }}); } }