Java Development Kit (JDK) and Software Development Kit (SDK) are both software kits that include a wide variety of tools for app developers to use. However, they are not the same thing. They do have many similarities but are distinctly different in key aspects too.
The Java Development Kit (JDK) is a bundle of software development tools consisting of compilers, class libraries and runtime systems that are used to develop applications.
The Simple Deployment Toolkit (SDK) provides an integrated container-based framework that produces software packages called "bundles" that can be dynamically deployed to multiple target environments including those based on Microsoft Windows, Unix, Linux and Mac OS X.

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What is the difference between JDK and SDK?