WriteProtectionOptions Class

Contains write protection settings.

Declaration

public class WriteProtectionOptions extends JavaObject

Remarks

Follow these steps to enable write protection:

1. Create a WriteProtectionOptions object and specify a password and hash algorithm.
2. Pass the WriteProtectionOptions object to the Presentation.protect() method.

The following code snippet applies password-based write protection:

package presentation;

import com.devexpress.docs.office.*;
import com.devexpress.docs.presentation.*;

import java.io.*;
import java.nio.file.*;

public class Main {
    public static void main(String[] args) throws Exception {
        try(Presentation presentation =
                    new Presentation(
                            Files.readAllBytes(
                                    Path.of("Presentation.pptx")))) {

            // Enable write protection.
            WriteProtectionOptions options =
                    new WriteProtectionOptions("password", HashAlgorithmType.SHA512);

            presentation.protect(options);

            Path outputDir = Path.of("output");
            Files.createDirectories(outputDir);

            // Save the protected presentation.
            try (FileOutputStream fileStream = new FileOutputStream(
                    outputDir.resolve("ProtectedPresentation.pptx").toFile())) {

                presentation.saveDocument(fileStream);
            }
        }
    }
}

Refer to the following help topic for additional information: Protect a Presentation from Editing.

Inherited Members

com.devexpress.system.JavaObject.clone()

com.devexpress.system.JavaObject.equals(java.lang.Object)

com.devexpress.system.JavaObject.hashCode()

com.devexpress.system.JavaObject.initFields()

com.devexpress.system.JavaObject.memberwiseClone()

com.devexpress.system.JavaObject.toString()

java.lang.Object.finalize()

java.lang.Object.getClass()

java.lang.Object.notify()

java.lang.Object.notifyAll()

java.lang.Object.wait()

java.lang.Object.wait(long)

java.lang.Object.wait(long,int)

Inheritance

Object

com.devexpress.system.JavaObject

WriteProtectionOptions

Constructors

WriteProtectionOptions(String password, HashAlgorithmType hashAlgorithm) Constructor

Initializes a new instance of the WriteProtectionOptions class with the specified password and hash algorithm.

Declaration

public WriteProtectionOptions(String password, HashAlgorithmType hashAlgorithm)

Parameters

Name	Type	Description
password	String	A password for write protection.
hashAlgorithm	HashAlgorithmType	A hash algorithm for password protection.

WriteProtectionOptions(String password) Constructor

Initializes a new instance of the WriteProtectionOptions class with the specified password.

Declaration

public WriteProtectionOptions(String password)

Parameters

Name	Type	Description
password	String	A password for write protection.

Methods

getHashAlgorithm() Method

Returns the hash algorithm used to protect the presentation.

Declaration

public HashAlgorithmType getHashAlgorithm()

Returns

Type	Description
HashAlgorithmType	The hash algorithm.

getPassword() Method

Returns the password used to protect the presentation from editing.

Declaration

public String getPassword()

Returns

Type	Description
String	The password.