java - 为什么简单的 FileInputStream 行返回异常？

Question

按钮操作；

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
  try {
  // TODO add your handling code here:
     deneme();
    } catch (IOException ex) {
       Logger.getLogger(MainFrame.class.getName()).log(Level.SEVERE, null, ex);
  }
}  

文件读取无效；

public void deneme() throws FileNotFoundException, IOException{
    try {
            FileInputStream file2 = FileInputStream (new File("D:\\Ornek.xls"));
            HSSFWorkbook workbook;
            workbook = new HSSFWorkbook(file2);
            HSSFSheet sheet = workbook.getSheetAt(0);
            HSSFRow row1 = sheet.getRow(0);
            HSSFCell cellA1 = row1.getCell((short) 0);
            String a1Val = cellA1.getStringCellValue();
            HSSFCell cellB1 = row1.getCell((short) 1);
            String b1Val = cellB1.getStringCellValue();
            HSSFCell cellC1 = row1.getCell((short) 2);
            String c1Val = cellC1.getStringCellValue();;

            System.out.println("A1: " + a1Val);
            System.out.println("B1: " + b1Val);
            System.out.println("C1: " + c1Val);
                }
            catch (IOException ex) {
                    Logger.getLogger(MainFrame.class.getName()).log(Level.SEVERE, null,ex);
                }


}

调试时出现以下异常；

Exception in thread "AWT-EventQueue-0" java.lang.UnsupportedOperationException: Not supported yet.

FileInputStream 行引发异常。我错过了什么吗？

谢谢。

-- 已解决 --

抱歉，首先问了一个愚蠢的问题:)

FileInputStream file2 = new FileInputStream (new File("D:\\Ornek.xls"));

new 关键字开头缺失。感谢@dkatzel

Answer 1

我认为您缺少 new 关键字。

试试这个:

FileInputStream file2 = new FileInputStream (new File("D:\\Ornek.xls"));

但是，这应该是编译错误而不是运行时错误。