file copy

CopyFile.java

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

public class CopyFile {
	public static void main(String[] args) throws IOException {
		FileInputStream inStream = new FileInputStream("c:/白.jpg");
		FileOutputStream outStream = new FileOutputStream("c:/白2.jpg");
		
		byte[] buffer = new byte[512];
		int len = -1;
		while((len = inStream.read(buffer)) != -1) {//一定要传入buffer
			outStream.write(buffer, 0, len);
		}
		
		inStream.close();
		outStream.flush();
		outStream.close();
	}
}