超大整數(shù)算術(shù)運算算法的設(shè)計與實現(xiàn)_圖文

1、 s1 = new String(b; finally if (fis != null try fis.close(; catch (IOException e1 else if (e.getActionCommand(.equals("scan2" FileInputStream fis = null; try JFileChooser jfc = new JFileChooser(; jfc.showOpenDialog(frame; File f2 = jfc.getSelectedFile(; if (f2 = null return; jtf2.setText(f

2、2.getAbsolutePath(; byte b = new byte(int f2.length(; fis = new FileInputStream(f2; fis.read(b; s2 = new String(b; finally if (fis != null try fis.close(; catch (IOException e1 else if (e.getActionCommand(.equals("add +" if (s1 = null | s2 = null | s1.equals("" | s2.equals("

3、" return; calnum = 1; j2.setText("正在計算." t.start(; else if (e.getActionCommand(.equals("min -" if (s1 = null | s2 = null | s1.equals("" | s2.equals("" return; calnum = 2; j2.setText("正在計算." t.start(; else if (e.getActionCommand(.equals("mul

4、 *" if (s1 = null | s2 = null | s1.equals("" | s2.equals("" return; 34 calnum = 3; j2.setText("正在計算." t.start(; else if (e.getActionCommand(.equals("div /" if (s1 = null | s2 = null | s1.equals("" | s2.equals("" return; calnum = 4; j2.

5、setText("正在計算." t.start(; catch (Exception e5 e5.printStackTrace(; private void writeResult(String res throws IOException FileOutputStream fos = null; try fos = new FileOutputStream(new File("result.txt" fos.write(res.getBytes(; fos.flush(; j2.setText("計算完成！用時 "+(endtime-starttime+ " 毫秒" finally if (fos != null try fos.close(; catch (IOException e1 private void showMe( frame.setVisible(true; frame.setLocation(400, 200; frame.setSize(400, 230; frame.setResizable(false; frame.setDefaultClo