Microsoft Windows SYSTEMTIME structure: Java parsing library

Microsoft Windows SYSTEMTIME structure, stores individual components of date and time as individual fields, up to millisecond precision.

KS implementation details

License: CC0-1.0

This page hosts a formal specification of Microsoft Windows SYSTEMTIME structure using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.


Runtime library

All parsing code for Java generated by Kaitai Struct depends on the Java runtime library. You have to install it before you can parse data.

The Java runtime library is published in the Maven Central Repository. Refer to the artifact page for instructions how to add it into your project with the build tool that you use.


Parse a local file and get structure in memory:

WindowsSystemtime data = WindowsSystemtime.fromFile("path/to/local/file.Microsoft Windows SYSTEMTIME structure");

Or parse structure from a byte array:

byte[] someArray = new byte[] { ... };
WindowsSystemtime data = new WindowsSystemtime(new ByteBufferKaitaiStream(someArray));

After that, one can get various attributes from the structure by invoking getter methods like:

data.year() // => Year

Java source code to parse Microsoft Windows SYSTEMTIME structure

// This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild

import io.kaitai.struct.ByteBufferKaitaiStream;
import io.kaitai.struct.KaitaiStruct;
import io.kaitai.struct.KaitaiStream;

 * Microsoft Windows SYSTEMTIME structure, stores individual components
 * of date and time as individual fields, up to millisecond precision.
 * @see <a href="">Source</a>
public class WindowsSystemtime extends KaitaiStruct {
    public static WindowsSystemtime fromFile(String fileName) throws IOException {
        return new WindowsSystemtime(new ByteBufferKaitaiStream(fileName));

    public WindowsSystemtime(KaitaiStream _io) {
        this(_io, null, null);

    public WindowsSystemtime(KaitaiStream _io, KaitaiStruct _parent) {
        this(_io, _parent, null);

    public WindowsSystemtime(KaitaiStream _io, KaitaiStruct _parent, WindowsSystemtime _root) {
        this._parent = _parent;
        this._root = _root == null ? this : _root;
    private void _read() {
        this.year = this._io.readU2le();
        this.month = this._io.readU2le();
        this.dow = this._io.readU2le(); = this._io.readU2le();
        this.hour = this._io.readU2le();
        this.min = this._io.readU2le();
        this.sec = this._io.readU2le();
        this.msec = this._io.readU2le();
    private int year;
    private int month;
    private int dow;
    private int day;
    private int hour;
    private int min;
    private int sec;
    private int msec;
    private WindowsSystemtime _root;
    private KaitaiStruct _parent;

     * Year
    public int year() { return year; }

     * Month (January = 1)
    public int month() { return month; }

     * Day of week (Sun = 0)
    public int dow() { return dow; }

     * Day of month
    public int day() { return day; }

     * Hours
    public int hour() { return hour; }

     * Minutes
    public int min() { return min; }

     * Seconds
    public int sec() { return sec; }

     * Milliseconds
    public int msec() { return msec; }
    public WindowsSystemtime _root() { return _root; }
    public KaitaiStruct _parent() { return _parent; }