java eclipse 文件输入路径问题-问答-阿里云开发者社区-阿里云

试试这个

public class CopyFile {
public static void main(String[] args) throws Exception {
String path="E:\1.doc";
String path1="F:\sae\0.doc";
File file=new File(path);
File file1=new File(path1);

FileInputStream in=new FileInputStream(file);
BufferedInputStream bufferin=new BufferedInputStream(in);

FileOutputStream out=new FileOutputStream(file1);
BufferedOutputStream bufferout=new BufferedOutputStream(out);

int c=0;
byte buffer[]=new byte[1024];

while((c=bufferin.read(buffer))!=-1){
    bufferout.write(buffer,0,c);
}
System.out.println(buffer);
bufferout.flush();
in.close();
out.close();
}
}