import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class ChineseTextEdit extends JFrame implements ActionListener{
JTextArea texA;
JScrollPane scroll;
JButton but1;
JButton but2;
JButton but3;
ChineseTextEdit(String name){
super(name);
init();
}
void init(){
JPanel pan = new JPanel();
pan.setLayout(new BorderLayout());
pan.setBackground(Color.YELLOW);
texA = new JTextArea("",20,30);
texA.setLineWrap(true);//设置自动换行
scroll = new JScrollPane(texA);//设置滚动条
pan.add(scroll,BorderLayout.CENTER);
JPanel pan1= new JPanel();
pan1.setLayout(new GridLayout(1,3));//1行三列
but1 = new JButton("保存");
pan1.add(but1);
but1.addActionListener(this);
but2 = new JButton("取消");
pan1.add(but2);
but2.addActionListener(this);
but3 = new JButton("退出");
pan1.add(but3);
but3.addActionListener(this);
pan.add(pan1,BorderLayout.SOUTH);
this.add(pan);
File f = new File("F:\text.txt");
if(f.exists())
{
try{
BufferedReader br = new BufferedReader(new FileReader("F:\text.txt"));
String strLine;
while(br.ready()){
strLine = br.readLine();
texA.append(strLine);
}
br.close();
}
catch(IOException ie){
ie.printStackTrace();
}
}
else{
try{
f.createNewFile();
}
catch(IOException e){
e.printStackTrace();
}
}
}
public void actionPerformed(ActionEvent e){
if(e.getSource() == but1)
{
try{
BufferedWriter bw = new BufferedWriter(new FileWriter("F:\text.txt"));//缓存写入
String strLine = texA.getText();
bw.write(strLine); bw.flush(); bw.close();
}
catch(IOException ie)
{
ie.printStackTrace();
}
}
else if(e.getSource() == but2){
texA.setText("");
}
else if(e.getSource() == but3){
dispose();//退出 }
} /** * @param args */
public static void main(String[] args)
{ // TODO Auto-generated method stub
ChineseTextEdit f = new ChineseTextEdit("test");
f.pack();
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}