javalangSystem

javalangSystem is a runtime library for a Java-like language that provides access to the host environment's resources and services. Conceptually, it serves the same role as java.lang.System in the Java platform, offering a centralized interface to input and output, timing, properties, and native libraries. The library is typically implemented as a collection of static members that are available without creating an object instance.

Key members include the standard streams: in, out, and err, which expose input and output streams for console interaction. It also defines constants and accessors such as lineSeparator and currentTimeMillis, nanoTime, and arraycopy, enabling basic timing and array operations. Environment and properties can be queried or modified via getProperty, getProperties, setProperty, and getenv; loading of native libraries is supported through loadLibrary. The exit method terminates the runtime with a status code, offering a controlled shutdown mechanism.

Usage of javalangSystem is typically global; code interacts with the host through these static members, allowing portable programs to adapt to different environments by querying system properties. Some implementations also expose security or sandbox options to regulate access to resources such as file systems or network connections.

Relation to java.lang.System: javalangSystem is analogous to the core class java.lang.System in Java. It is a language-agnostic construct used in environments that emulate or implement a similar runtime API.

See also java.lang.System, Runtime environment, System properties.