June 2004
Intermediate to advanced
848 pages
21h 28m
English
Content preview from Just Java™ 2
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Garbage Collection
Many programming languages support heap-based memory allocation. All objects in Java are allocated on the heap; no objects are ever allocated on the stack (an additional special-purpose storage data structure). Different pieces of storage can be allocated from and returned to the heap in no particular order, leading to problems of fragmentation—you have enough total storage free to satisfy a large allocation request, but it is not in the usable form of one contiguous chunk.
Solving the fragmentation problem
Heap fragmentation is resolved by the run-time system periodically reorganizing the heap, and possibly relocating some live (in-use) objects. All this will be transparent to the application, apart from the time ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.