試圖發送數據到文本文件

Question

嗨，我做了一個包含jtextfield和幾個jbuttons的程序。我想按jbutton，以便將jtextfields保存到計算機中。任何幫助都是有用的。

Answer 1

我認爲這將幫助你..

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {           

    if (jTxt_text.getText().isEmpty()) { 
     JOptionPane.showMessageDialog(rootPane, "Field is empty. Fill the filed and try again."); 
    } else { 
     //get the text from the jTextField and save it into a varibale. 
     String inputText = jTxt_text.getText(); 
     //Where to save the file. 
     String savePath = "C:/test/sample.txt"; 

     //Creating a file object, file is an abstract representation of file and directory pathnames. 
     File tempFile = new File(savePath); 

     //Check wther the file is available or not. 
     if (!tempFile.exists()) { 
      try { 
       //Creates the file if it's not exsising. 
       tempFile.createNewFile(); 
      } catch (IOException ex) { 
       ex.printStackTrace(); 
      } 
     } 

     try { 
      //writing process.. 
      FileWriter tempWriter = new FileWriter(tempFile.getAbsoluteFile()); 
      BufferedWriter tempBufferWriter = new BufferedWriter(tempWriter); 
      tempBufferWriter.write(inputText); 
      tempBufferWriter.close(); 

      JOptionPane.showMessageDialog(rootPane, "Text file with the written text is successfully saved."); 
      jTxt_text.setText(null); 

     } catch (IOException ex) { 
      ex.printStackTrace(); 
     } 
    } 
} 

仍然有一個小問題，此代碼tempBufferWriter.write(inputText)返回void所以..我不知道如何檢查wther從代碼本身成功地完成了過程..