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Java Fundamental Classes Reference

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Accessing the Environment

10.5 Garbage Collection

The garbage-collection process in Java normally runs continuously in the background in a low-priority thread. In an environment that has nonpreemptive thread scheduling, you may want to run the Java virtual machine with the -noasyncgc option to ensure the best possible response from your application. The -noasyncgc option prevents garbage collection from running in the background. In this case, the only time that garbage collection occurs automatically is when the Java virtual machine runs out of memory. Since this can cause unexpected pauses in a program, you should try to avoid the problem by running the garbage collector at convenient or appropriate times by calling System.gc().

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