我这代码错在哪

Question

import java.awt.BorderLayout;

import java.awt.FlowLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.RandomAccessFile;

import javax.crypto.EncryptedPrivateKeyInfo;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JDialog;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

class Encrypter{

public Encrypter(int code2, JFileChooser f, boolean selected) {

// TODO Auto-generated constructor stub

}

public void encode() {

// TODO Auto-generated method stub

}

}

public class where extends JFrame {

JLabel l1,l2;

JFileChooser f;

JTextField t;

JButton b1,b2;

JCheckBox c;

JPanel p1,p2;

int code;

boolean rewrite;

File sourceFile;

FileInputStream fin;

FileOutputStream fout;

String sourceFileName;

String obJFileName;

where(){

l1=new JLabel("选择加密文件");

l2=new JLabel("选择加密/解密算子");

t=new JTextField(10);

b1=new JButton("确定");

b2=new JButton("取消");

c=new JCheckBox("覆盖文件");

f=new JFileChooser();

p1=new JPanel();

p2=new JPanel();

setLayout(new BorderLayout());

add(p1,BorderLayout.CENTER);

add(p2,BorderLayout.SOUTH);

f.setControlButtonsAreShown(false);

p1.setLayout(new FlowLayout(FlowLayout.LEFT));

p1.add(l1);

p1.add(f);

p1.add(l2);

p1.add(t);

p1.add(c);

p2.add(b1);

p2.add(b2);

this.setSize(700,500);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setResizable(false);//固定窗口

this.setVisible(true);

setEvent();

}

private void setEvent() {

// TODO Auto-generated method stub

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

b1.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

File f1=f.getSelectedFile();

int code=Integer.parseInt(c.getText());

new Encrypter(code,f,c.isSelected()).encode();

final JDialog jb=new JDialog(where.this,"加密成功!");

jb.add(new JLabel("文件加密成功"),BorderLayout.NORTH );

JButton jbok;

jb.add(jbok=new JButton("确定"),BorderLayout.SOUTH);

jbok.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

jb.dispose();

}

});

jb.setLocationRelativeTo(where.this);

jb.setSize(300,200);

jb.setVisible(true);

}

});

b2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent arg0) {

// TODO Auto-generated method stub

System.exit(0);

}

});

}

public void encode(){

if(rewrite){

RandomAccessFile fra=null;

try{

fra=new RandomAccessFile(sourceFile, "rw");

int temp;

while((temp=fra.read())!=-1){

fra.seek(fra.getFilePointer()-1);

fra.write(temp^code);

}

}catch(Exception e){

e.printStackTrace();

}finally{

if(fra!=null)

try{

fra.close();

}catch(Exception e){

}

}

}else{

FileInputStream fis=null;

FileOutputStream fos=null;

try{

fis=new FileInputStream(sourceFile);

fos=new FileOutputStream(obJFileName);

while(fis.available()>0){

fos.write(fis.read()^code);

}

fos.flush();

}catch(Exception e){

e.printStackTrace();

}finally{

if(fis!=null)

try{

fis.close();

}catch(Exception e){

}

if(fos!=null)

try{

fos.close();

}catch(Exception e){

}

}

}

}

public static void main(String[] args) {

new where();

}

}

Answer 1

把报的错一起贴上来吧，方便查看