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java.lang.Objectjava.lang.Runtime
@TransactionType(value=NOT_SUPPORTED) public class Runtime
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.
An application cannot create its own instance of this class.
This Java Card class is a subset of the CLDC 1.1 Runtime class. Some interfaces, methods and/or variables have been pruned, and/or other methods simplified, in an effort to reduce the size of this class and/or eliminate dependencies on unsupported features.
getRuntime()
Method Summary | |
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long |
freeMemory()
Returns the amount of free memory in the system. |
void |
gc()
Runs the garbage collector. |
static Runtime |
getRuntime()
Returns the runtime object associated with the current Java application. |
long |
totalMemory()
Returns the total amount of memory in the Java Virtual Machine. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static Runtime getRuntime()
Runtime
are instance methods
and must be invoked with respect to the current runtime object.
Runtime
object associated with the current
Java application.public long freeMemory()
gc
method may result in increasing the value returned by
freeMemory.
public long totalMemory()
Note that the amount of memory required to hold an object of any given type may be implementation-dependent.
public void gc()
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 System.gc()
is the conventional and convenient means
of invoking this method.
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