Java - (Environment|Operating System)

About

Most of the OS informations are managed in the System class.

Every Java application has a single instance of class Runtime that allows the application to interface with the environment in which the application is running. The current runtime can be obtained from the getRuntime method.

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Characteristics

Memory

See JVM - Memory (The Heap)

Variable

• All

Map<String, String> env = System.getenv();
for (String envName : env.keySet()) {
	System.out.format("%s=%s%n", envName, env.get(envName));
}

• One

String myEnv = System.getenv("myEnvname");