Question

我已经尝试过关于这个主题的旧线程，但没有一个解决方案似乎适合我。我试图写一个名为“receipt.txt”的.txt文件但是使用以下代码我什么都没得到。没有创建文件（显然文件中没有任何文件不存在）没有任何错误。

//Write to File
 String fileName = "receipt.txt";
 try{
     PrintWriter writer = new PrintWriter(fileName);
     writer.println("Thank you for shopping with us");
     writer.println("Name: " + customerName);
     writer.println("Returning Customer: " + previousCustomer );
     writer.println("Phone: " + phoneNumber);
     writer.println("Shirt Type: " + shirtType);
     writer.println("Shirt Color: " + shirtColor);
     writer.println("Shirt Material: " + shirtMaterial);
     writer.println("Item Amount: " + itmAmt);
     writer.println("Total Cost: " + fmt3.format(totalCostMsg));
     writer.close();
     writer.flush();
     System.out.println("Receipt printed");      
 } catch (FileNotFoundException e) {
     e.printStackTrace();
 }

Answer 1

您的输出已写入名为fileName

的文件

替换

PrintWriter writer = new PrintWriter("fileName");

带

PrintWriter writer = new PrintWriter(fileName);

编辑：

显然你只是在错误的地方寻找文件，添加以下语句以查看它的创建位置：

System.out.println(new File(fileName).getAbsolutePath());

另请注意，close，flush的顺序不正确。首先应该调用flush。

Answer 2

PrintWriter writer = new PrintWriter("fileName");

应该是

PrintWriter writer = new PrintWriter(fileName);

，因为您已经定义了

String fileName = "receipt.txt";

PrintWriter不会写入.txt文件

2 个答案: