字节流

package random;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class ExportDataIO {

public static void main(String[] args) {

try {
FileInputStream fis = new FileInputStream(new File("c:\\测试\\d.txt"));
int a = 0;
while((a = fis.read())!= -1){
System.out.println(a);
}
FileOutputStream fos = new FileOutputStream(new File("c:\\测试\\e.txt"));
fos.write(a);
fis.close();
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}