使用JFileChooser和业务类保存.txt

Question

我尝试在选择保存按钮后在表单端启动.txt文件的保存。保存将在业务包上进行。但是，它似乎并没有起作用。我无法弄清楚原因。以下是我在表单方面的内容：

private void jMnuSaveActionPerformed(java.awt.event.ActionEvent evt) {                                         
    statusMessageLabel.setText("");
    JFileChooser f = new JFileChooser(".");
    String path = "";
    f.setDialogTitle("Save Asset Depreciation File");
    FileNameExtensionFilter filter = new FileNameExtensionFilter ("Text File (*.txt)", "txt");
    f.setFileFilter(filter);
    JDialog dg = new JDialog();
    int rval = f.showSaveDialog(dg);
    if (rval == f.CANCEL_OPTION){
        statusMessageLabel.setText("Open canceled.");
    }
    else if (rval == f.APPROVE_OPTION){
        path = f.getSelectedFile().getName();
        a.setSave(path);
        statusMessageLabel.setText(path);
    }
}                                        

以下是我在业务包/资产类方面的内容：

public boolean setSave(String p){
    boolean result = true;
    try{
        PrintWriter out = new PrintWriter(
        new FileWriter(p + ".txt", true));
        out.println("Asset Name: " + this.AssetNm);
        out.println("Salvage value: " + this.salvage);
        out.println("Cost: " + this.cost);
        out.println("Life (years): " + this.life);
        out.close();
    }catch (IOException e){
        result = false;
        this.emsg = "Write status error: " + e.getMessage();
    }
    return result;
}