Writing Binary Data : File Save Load « JSP « Java Tutorial

<%@ page import="java.io.*" %>
<HTML>
    <HEAD>
        <TITLE>Writing Binary Data</TITLE>
    </HEAD>

    <BODY>
        <H1>Writing Binary Data</H1>
        This page writes binary data to a file.
        <BR>

        <%
            byte data[] = {1, 2, 3, 4};
            String file = application.getRealPath("/") + "test.dat";
            FileOutputStream fileoutputstream = new FileOutputStream(file);

            for (int i = 0; i < data.length; i++) {
                fileoutputstream.write(data[i]);
            }

            fileoutputstream.close();
        %>
        Four byte values were written to a file byte by byte.
    </BODY>
</HTML>

23.51.File Save Load
	23.51.1.	Save Form Input to File using JSP
	23.51.2.	Index of Files
	23.51.3.	Read file
	23.51.4.	Writing Binary Data
	23.51.5.	Reading Binary Data