请问如何拷贝一个文件：？

[xmayxmei]

如给出：“E:/eclipse3.02/2024/200386-4917.jpg”
怎样将该文件拷贝到另外一个目录？
若子目录不存在自动创建。“F:/MYFILES/2024/200386-4917.jpg”

[interpb]

FileInputStream fin = new FileInputStream(“E:\\\eclipse3.02\\2024\\200386-4917.jpg”
");
File fcopy = new File("F:\\\MYFILES\\2024\\200386-4917.jpg");
fcopy.createNewFile() ;

FileOutputStream fout = new FileOutputStream(fcopy);

int b;
while((b=fin.read())!=-1){
fout.write(b);

注意文件分隔符

[interpb]

E:\\\ 改为E:\\ 不好意思自己还写错 还让你注意!

[xmayxmei]

楼上，我没有这个目录\\2024\\要怎么搞？
因为是动态的。所以所有的目录要动态创建。

[wfhlxl]

public void CopyFile(String in , String out) throws Exception {
File inf = new File(in);

if(!inf.exists())
return;
File outf = new File(out);

String outPath[] = out.split("/");
String tmp =outPath[0];
for(int i =1; i< outPath.length -1;i++)
{ tmp = tmp +"/" + outPath[i];
outf =new File(tmp +"/");
if(!outf.exists())
{
outf.mkdir();

}

}
outf =new File(out);
FileInputStream fis = null;
try {
fis = new FileInputStream(inf);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
FileOutputStream fos = null;

try {
fos = new FileOutputStream(outf);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

byte[] buf = new byte[1024];
int i = 0;
while((i=fis.read(buf))!=-1) {
fos.write(buf, 0, i);
}
fis.close();
fos.close();
}
//call :
try {
a.CopyFile("d:/aa/aa.bmp","d:/aa/bb/aa.bmp");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}