ปลดล็อก PPT โดยใช้ Java

LoadOptions loadOptions = new LoadOptions();
loadOptions.setPassword("123123");
Presentation presentation = new Presentation("pres.ppt", loadOptions);
try {
    presentation.getProtectionManager().removeEncryption();
    presentation.save("encryption-removed.ppt", SaveFormat.Ppt);
} finally {
    if (presentation != null) presentation.dispose();
}

Presentation presentation = new Presentation("pres.ppt");
try {
    presentation.getProtectionManager().removeWriteProtection();
    presentation.save("write-protection-removed.ppt", SaveFormat.Ppt);
} finally {
    if (presentation != null) presentation.dispose();
}