Core Java
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Create direct and non-direct ByteBuffer
In this example we are going to demonstrate several methods of creating a direct (memory-mapped) and non-direct ByteBuffer in Java.…
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Convert between ByteBuffer and byte array
With this example we are going to demonstrate how to convert between ByteBuffers and byte arrays. In short, to make…
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Export Object over RMI example
This is an example of how to Export Object over RMI. The Java Remote Method Invocation (RMI) system allows an…
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Encrypt/Decrypt a file using DES
In this example we shall show you how to encrypt/decrypt a file using DES. To encrypt and decrypt a file…
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Calculate the CRC Sum of a file
With this example we are going to demonstrate how to calculate the CRC Sum of a file. The Cyclic Redundancy…
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Encrypt/Decrypt with salt
This is an example of how to encrypt and decrypt using a salt. The salt is random data very often…
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Check message consistency using hash functions
In this example we shall show you how to check message consistency using hash functions. We are using the java.security.MessageDigest…
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SHA-1 hash function example
With this example we are going to demonstrate how to make a SHA-1 hash function example. The Secure Hash Algorithm…
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Diffie-Helman key pair generation and parameters
This is an example of how to generate key pairs with the Diffie-Helman algorithm. The DH algorithm is be used…
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Simple symmetric key encrypt/decrypt
In this example we shall show you how to encrypt and decrypt using a symmetric key. In the case of…
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