How to Encrypt and Decrypt This program uses the Caesar Cipher algorithm, which we discussed last month. As a review, this cipher works by shifting each letter by 0 to 25 times.

We got you started with JavaScript, but if you want to get an idea of how that translates into a language like Java, which can be used to create Android (and other) apps, How to Program With Java ...

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Learn how to use pattern-matching features in your Java programs, including pattern matching with switch statements, when clauses, sealed classes, and a preview of primitive type pattern matching ...