What is esc java?

ESC/Java is a software verification tool that performs automatic verification of Java programs. It is an automated theorem prover that can verify the correctness of a program by ensuring that it follows a set of predetermined rules. The tool is developed at Compaq Systems Research Center and is available for free download. ESC/Java consists of two main components: an annotation language and a verification engine. The annotation language is used to specify program properties that need to be verified, while the verification engine uses symbolic execution to search for counterexamples that violate these properties. ESC/Java is widely used in the industry and has been used to verify large software systems, including the Java Card specification and the JML library.