ReadFileBuffer.java

import java.io.*;

public class fileing {
    public static void main(String[] args) {

    }

    void copyFileBuffer(File src, File dest) throws IOException {
        try (var in = new BufferedInputStream(
                new FileInputStream(src));
             var out = new BufferedOutputStream(
                     new FileOutputStream(dest))) {
            var buffer = new byte[1024];
            int lengthRead;
            while ((lengthRead = in.read(buffer)) > 0) {
                out.write(buffer, 0, lengthRead);
                out.flush();
            }
        }
    }

}