image not showing when transferred using InputStream and OutputStream in java

Question

This is my test program. I need it to apply somewhere.This may be small, sorry for that. But I'm a starter still. So kindly help me.

try{
        File file1 = new File("c:\\Users\\prasad\\Desktop\\bugatti.jpg");
        File file2 = new File("c:\\Users\\prasad\\Desktop\\hello.jpg");
        file2.createNewFile();
        BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file1)));
        String data = null;
        StringBuilder imageBuild = new StringBuilder();
        while((data = reader.readLine())!=null){
            imageBuild.append(data);
        }
        reader.close();
        BufferedWriter writer = new BufferedWriter(new PrintWriter(new FileOutputStream(file2)));
        writer.write(imageBuild.toString());
        writer.close();
    }catch(IOException e){
        e.printStackTrace();
    }

This is file1

and This is file2

Answer 1

You can do either of these two:

private static void copyFile(File source, File dest) throws IOException {
Files.copy(source.toPath(), dest.toPath());
}

or maybe this if you want to use streams:

private static void copyFile(File source, File dest)
throws IOException {
InputStream input = null;
OutputStream output = null;
try {
    input = new FileInputStream(source);
    output = new FileOutputStream(dest);
    byte[] buf = new byte[1024];
    int bytesRead;
    while ((bytesRead = input.read(buf)) > 0) {
        output.write(buf, 0, bytesRead);
    }
} finally {
    input.close();
    output.close();
}
}