//谁能帮我看下这个小程序,为什么不能打开文本,它不加载到TextArea里,帮我改下,顺便帮我加个save上去,让它也可以保存,谢谢啦。
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class open {
public static void main(String[] args)
{
final Frame f=new Frame("http://www.baidu.com");
f.setSize(600,400);
f.setLocation(100,100);
//TextField tf=new TextField(20);
//f.add(tf,"NORTH");
final TextArea tf=new TextArea();
f.add(tf);
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
MenuBar mb=new MenuBar();
Menu m1=new Menu("File");
Menu m2=new Menu("Edit");
MenuItem mi1=new MenuItem("New");
MenuItem mi2=new MenuItem("Open");
mi2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
FileDialog fd=new FileDialog(f,"weixing open file",FileDialog.LOAD);
String strFile=fd.getDirectory()+fd.getFile();
if(strFile!=null)
{
try
{
FileInputStream fis=new FileInputStream(strFile);
byte[] buf=new byte[10*1024];
int len=fis.read(buf);
tf.append(new String(buf,0,len));
} catch (Exception ex)
{
ex.printStackTrace();
}
}
fd.setVisible(true);
}
});
MenuItem mi3=new MenuItem("Save");
MenuItem mi4=new MenuItem("Exit");
mi4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
MenuItem mi5=new MenuItem("Copy");
MenuItem mi6=new MenuItem("Paste");
m1.add(mi1);
m1.add(mi2);
m1.add(mi3);
m1.add(mi4);
m2.add(mi5);
m2.add(mi6);
mb.add(m1);
mb.add(m2);
f.setMenuBar(mb);
f.setVisible(true);
}
}
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class open {
public static void main(String[] args)
{
final Frame f=new Frame("http://www.baidu.com");
f.setSize(600,400);
f.setLocation(100,100);
//TextField tf=new TextField(20);
//f.add(tf,"NORTH");
final TextArea tf=new TextArea();
f.add(tf);
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
MenuBar mb=new MenuBar();
Menu m1=new Menu("File");
Menu m2=new Menu("Edit");
MenuItem mi1=new MenuItem("New");
MenuItem mi2=new MenuItem("Open");
mi2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
FileDialog fd=new FileDialog(f,"weixing open file",FileDialog.LOAD);
String strFile=fd.getDirectory()+fd.getFile();
if(strFile!=null)
{
try
{
FileInputStream fis=new FileInputStream(strFile);
byte[] buf=new byte[10*1024];
int len=fis.read(buf);
tf.append(new String(buf,0,len));
} catch (Exception ex)
{
ex.printStackTrace();
}
}
fd.setVisible(true);
}
});
MenuItem mi3=new MenuItem("Save");
MenuItem mi4=new MenuItem("Exit");
mi4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
MenuItem mi5=new MenuItem("Copy");
MenuItem mi6=new MenuItem("Paste");
m1.add(mi1);
m1.add(mi2);
m1.add(mi3);
m1.add(mi4);
m2.add(mi5);
m2.add(mi6);
mb.add(m1);
mb.add(m2);
f.setMenuBar(mb);
f.setVisible(true);
}
}
FileDialog fd=new FileDialog(f,"weixing open file",FileDialog.LOAD);
下面加一句
fd.setVisible(true);
import java.awt.event.*;
import java.io.*;
public class open {
public static void main(String[] args)
{
final Frame f=new Frame("http://www.baidu.com");
f.setSize(600,400);
f.setLocation(100,100);
//TextField tf=new TextField(20);
//f.add(tf,"NORTH");
final TextArea tf=new TextArea();
f.add(tf);
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
MenuBar mb=new MenuBar();
Menu m1=new Menu("File");
Menu m2=new Menu("Edit");
MenuItem mi1=new MenuItem("New");
MenuItem mi2=new MenuItem("Open");
mi2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
FileDialog fd=new FileDialog(f,"weixing open file",FileDialog.LOAD);
fd.setVisible(true);
String strFile=fd.getDirectory()+fd.getFile();
if(strFile!=null)
{
try
{
FileInputStream fis=new FileInputStream(strFile);
byte[] buf=new byte[10*1024];
int len=fis.read(buf);
tf.append(new String(buf,0,len));
} catch (Exception ex)
{
ex.printStackTrace();
}
}
fd.setVisible(true);}
});
MenuItem mi3=new MenuItem("Save");
MenuItem mi4=new MenuItem("Exit");
mi4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
MenuItem mi5=new MenuItem("Copy");
MenuItem mi6=new MenuItem("Paste");
m1.add(mi1);
m1.add(mi2);
m1.add(mi3);
m1.add(mi4);
m2.add(mi5);
m2.add(mi6);
mb.add(m1);
mb.add(m2);
f.setMenuBar(mb);
f.setVisible(true);
}
}
import java.awt.event.*;
import java.io.*;public class TempTest {
public static void main(String[] args) {
final Frame f = new Frame("http://www.baidu.com");
f.setSize(600, 400);
f.setLocation(100, 100);
final TextArea tf = new TextArea();
f.add(tf);
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
MenuBar mb = new MenuBar();
Menu m1 = new Menu("File");
Menu m2 = new Menu("Edit");
MenuItem mi1 = new MenuItem("New");
MenuItem mi2 = new MenuItem("Open");
mi2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
FileInputStream fis = null;
FileDialog fd = new FileDialog(f, "weixing open file",
FileDialog.LOAD);
fd.setVisible(true);
String strFile = fd.getDirectory() + fd.getFile();
if (strFile != null) {
try {
fis = new FileInputStream(strFile);
byte[] buf = new byte[10 * 1024];
int len = fis.read(buf);
tf.append(new String(buf, 0, len));
} catch (Exception ex) {
ex.printStackTrace();
} finally {
try {
fis.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
}); MenuItem mi3 = new MenuItem("Save");
MenuItem mi4 = new MenuItem("Exit"); mi3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
FileOutputStream fis = null;
FileDialog fd = new FileDialog(f, "weixing save file",
FileDialog.SAVE);
fd.setVisible(true);
String strFile = fd.getDirectory() + fd.getFile();
if (strFile != null) {
try {
fis = new FileOutputStream(strFile);
byte[] buf = tf.getText().getBytes();
fis.write(buf);
} catch (Exception ex) {
ex.printStackTrace();
} finally {
try {
fis.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
}); mi4.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
}); MenuItem mi5 = new MenuItem("Copy");
MenuItem mi6 = new MenuItem("Paste");
m1.add(mi1);
m1.add(mi2);
m1.add(mi3);
m1.add(mi4);
m2.add(mi5);
m2.add(mi6);
mb.add(m1);
mb.add(m2);
f.setMenuBar(mb);
f.setVisible(true);
}
}