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What is the purpose of the Runtime class? The java runtime system can be accessed by the Runtime class. The runtime information – memory availability, invoking the garbage collector is possible by using Runtime class.
Knowing the free memory space:
Runtime.freeMemory() - Returns the free memory.
Runtime.maxMemory() - Returns the memory that JVM can use at the maximum.
Invoking garbage collector:
Runtime.gc();
Some other facilities that are provided by Runtime class are:
- Reading data through key board
- Using system properties and environment variables
- Running non-java programs from within a java application.
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