java画图板程序文件部分,请帮忙注释下

来源：百度知道 编辑：UC知道 时间：2024/06/22 17:20:27
//保存图形文件程序段
public void saveFile()
{
JFileChooser fileChooser=new JFileChooser();
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
int result =fileChooser.showSaveDialog(this);
if(result==JFileChooser.CANCEL_OPTION)
return ;
File fileName=fileChooser.getSelectedFile();
fileName.canWrite();

if (fileName==null||fileName.getName().equals(""))
JOptionPane.showMessageDialog(fileChooser,"Invalid File Name",
"Invalid File Name", JOptionPane.ERROR_MESSAGE);
else{
try {
fileName.delete();
FileOutputStream fos=new FileOutputStream(fileName);

output=new ObjectOutputStream(fos);

output.writeInt(

太多了 不好贴 具体哪些不明白 HI我

//打开一个图形文件程序段
public void loadFile()
{

JFileChooser fileChooser=new JFileChooser();
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
int result =fileChooser.showOpenDialog(this);
if(result==JFileChooser.CANCEL_OPTION)
return ;
File fileName=fileChooser.getSelectedFile();
fileName.canRead();
if (fileName==null||fileName.getName().equals(""))
JOptionPane.showMessageDialog(fileChooser,"Invalid File Name",
"Invalid File Name", JOptionPane.ERROR_MESSAGE);
else {
try {

FileInputStream fis=new FileInputStream(fileName);

input=new ObjectInputStream(fis);
dra