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    <p>To get the OS version (major, minor, build, service pack) you can use JNA <a href="http://today.java.net/article/2009/11/11/simplify-native-code-access-jna" rel="nofollow">Documentation Here</a> and any number of the windows libraries (version.dll, kernel32.dll, user32.dll, etc). I based my project on Daniel Doubrovkine's project <a href="http://oshi.codeplex.com/" rel="nofollow">Operating System and Hardware Information</a>. His project will also query the hardware, which I didn't need. The nice thing is it will also allow you to read/write to the registry.</p> <pre><code>import com.sun.jna.Native; import com.sun.jna.platform.win32.Advapi32Util; import com.sun.jna.platform.win32.Kernel32; import com.sun.jna.platform.win32.User32; import com.sun.jna.platform.win32.Win32Exception; import com.sun.jna.platform.win32.WinNT; import com.sun.jna.platform.win32.WinNT.OSVERSIONINFOEX; import com.sun.jna.platform.win32.WinReg; import com.sun.jna.platform.win32.WinUser; /** * * @author geverding */ public class OSVersionInfo { private OSVERSIONINFOEX versionInfo; private static OSVersionInfo instance = new OSVersionInfo(); public static OSVersionInfo Istance() { return instance; } public OSVersionInfo() { versionInfo = new OSVERSIONINFOEX(); if (!Kernel32.INSTANCE.GetVersionEx(versionInfo)) { throw new Win32Exception(Kernel32.INSTANCE.GetLastError()); } } public int getMajor() { return versionInfo.dwMajorVersion.intValue(); } public int getMinor() { return versionInfo.dwMinorVersion.intValue(); } public int getBuild() { return versionInfo.dwBuildNumber.intValue(); } public String getServicePack() { return Native.toString(versionInfo.szCSDVersion); } @Override public String toString() { String version = null; if (versionInfo.dwPlatformId.intValue() == WinNT.VER_PLATFORM_WIN32_NT) { // 7 if (versionInfo.dwMajorVersion.intValue() == 6 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 1 &amp;&amp; versionInfo.wProductType == WinNT.VER_NT_WORKSTATION) { version = "7"; } // Server 2008 R2 else if (versionInfo.dwMajorVersion.intValue() == 6 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 1 &amp;&amp; versionInfo.wProductType != WinNT.VER_NT_WORKSTATION) { version = "Server 2008 R2"; } // Server 2008 else if (versionInfo.dwMajorVersion.intValue() == 6 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 0 &amp;&amp; versionInfo.wProductType != WinNT.VER_NT_WORKSTATION) { version = "Server 2008"; } // Vista else if (versionInfo.dwMajorVersion.intValue() == 6 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 0 &amp;&amp; versionInfo.wProductType == WinNT.VER_NT_WORKSTATION) { version = "Vista"; } // Server 2003 else if (versionInfo.dwMajorVersion.intValue() == 5 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 2 &amp;&amp; versionInfo.wProductType != WinNT.VER_NT_WORKSTATION &amp;&amp; User32.INSTANCE.GetSystemMetrics(WinUser.SM_SERVERR2) != 0) { version = "Server 2003"; } // Server 2003 R2 else if (versionInfo.dwMajorVersion.intValue() == 5 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 2 &amp;&amp; versionInfo.wProductType != WinNT.VER_NT_WORKSTATION &amp;&amp; User32.INSTANCE.GetSystemMetrics(WinUser.SM_SERVERR2) == 0) { version = "Server 2003 R2"; } // XP 64 bit else if (versionInfo.dwMajorVersion.intValue() == 5 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 2 &amp;&amp; versionInfo.wProductType == WinNT.VER_NT_WORKSTATION) { version = "XP"; } // XP 32 bit else if (versionInfo.dwMajorVersion.intValue() == 5 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 1) { version = "XP"; } // 2000 else if (versionInfo.dwMajorVersion.intValue() == 5 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 0) { version = "2000"; } // Windows NT else if (versionInfo.dwMajorVersion.intValue() == 4) { version = "NT 4"; if ("Service Pack 6".equals(Native.toString(versionInfo.szCSDVersion))) { if (Advapi32Util.registryKeyExists(WinReg.HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\WindowsNT\\CurrentVersion\\Hotfix\\Q246009")) { return "NT4 SP6a"; } } } else { throw new RuntimeException("Unsupported Windows NT version: " + versionInfo.toString()); } if (versionInfo.wServicePackMajor.intValue() &gt; 0) { version = version + " SP" + versionInfo.wServicePackMajor.intValue(); } } else if (versionInfo.dwPlatformId.intValue() == WinNT.VER_PLATFORM_WIN32_WINDOWS) { if (versionInfo.dwMajorVersion.intValue() == 4 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 90) { version = "ME"; } else if (versionInfo.dwMajorVersion.intValue() == 4 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 10) { if (versionInfo.szCSDVersion[1] == 'A') { version = "98 SE"; } else { version = "98"; } } else if (versionInfo.dwMajorVersion.intValue() == 4 &amp;&amp; versionInfo.dwMinorVersion.intValue() == 0) { if (versionInfo.szCSDVersion[1] == 'C' || versionInfo.szCSDVersion[1] == 'B') { version = "95 OSR2"; } else { version = "95"; } } else { throw new RuntimeException("Unsupported Windows 9x version: " + versionInfo.toString()); } } else { throw new RuntimeException("Unsupported Windows platform: " + versionInfo.toString()); } return version; } } </code></pre>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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