小编sam*_*uel的帖子

我有一个用这个部分打开文件的类:

JFileChooser chooser=new JFileChooser();
chooser.setCurrentDirectory(new File("."));
int r = chooser.showOpenDialog(ChatFrame.this);
if (r != JFileChooser.APPROVE_OPTION) return;
try {
    Login.is.sendFile(chooser.getSelectedFile(), Login.username,label_1.getText());
} catch (RemoteException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

然后我想将此文件保存在另一个文件中:

JFileChooser jfc = new JFileChooser();
int result = jfc.showSaveDialog(this);
if (result == JFileChooser.CANCEL_OPTION)
    return;
File file = jfc.getSelectedFile();
InputStream in;
try {
    in = new FileInputStream(f);

    OutputStream st=new FileOutputStream(jfc.getSelectedFile());
    st.write(in.read());
    st.close();
} catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (IOException e) {
    // …