Dark Horse self-learning video runtime class

Runtime class description: The runtime class has no constructor. Its static method getruntime () can return runtime objects related to the current Java application.

1. runtime inheritance: Java. Lang. object.

2. runtime method: exec (string command) executes the specified string command in a separate process. Returns the process object. The destory () method of this object can terminate the process.

Long freememory () returns the amount of free memory in the Java Virtual Machine.

Long maxmemory () returns the maximum amount of memory that the Java Virtual Machine is trying to use.

Long totalmemoty () returns the total memory in the Java Virtual Machine.

Void GC () run the Garbage Collector

Dark Horse self-learning video runtime class