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What is the diffrerence between System.gc() and Runtime.gc()

 
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hai,
Plz explain What is the diffrerence between System.gc() and Runtime.gc()?
 
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System.gc() is a static method which calls
Runtime.getRuntime().gc();

You can either call
System.gc();
or you can directly call
Runtime.getRuntime().gc();

They do the same thing.

Runtime.gc() won't compile because gc() is not a static method of Runtime.
 
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But neither usually does much good. they are (from what i recall) SUGGESTIONS that the JVM might want to CONSIDER running the garbage collector. But the JVM is free to ignore you.
 
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