| Methods Summary |
|---|
| public void | exit(int status)Terminates the currently running Java application. This
method never returns normally.
The argument serves as a status code; by convention, a nonzero
status code indicates abnormal termination.
exitInternal(status);
|
| private native void | exitInternal(int status)
|
| public native long | freeMemory()Returns the amount of free memory in the system. Calling the
gc method may result in increasing the value returned
by freeMemory.
|
| public native void | gc()Runs the garbage collector.
Calling this method suggests that the Java Virtual Machine expend
effort toward recycling unused objects in order to make the memory
they currently occupy available for quick reuse. When control
returns from the method call, the Java Virtual Machine has made
its best effort to recycle all discarded objects.
The name gc stands for "garbage
collector". The Java Virtual Machine performs this recycling
process automatically as needed even if the
gc method is not invoked explicitly.
The method {@link System#gc()} is the conventional and convenient
means of invoking this method.
|
| public static java.lang.Runtime | getRuntime()Returns the runtime object associated with the current Java application.
Most of the methods of class Runtime are instance
methods and must be invoked with respect to the current runtime object.
return currentRuntime;
|
| public native long | totalMemory()Returns the total amount of memory in the Java Virtual Machine.
The value returned by this method may vary over time, depending on
the host environment.
Note that the amount of memory required to hold an object of any
given type may be implementation-dependent.
|
