Java garbage collection mechanism and garbage collection
This article is a summary of the knowledge points I have summarized in studying the Java garbage collection mechanism.
- Memory leakage: Memory leakage means that the memory space is not recycled after use. Generally, the memory leakage in Java occurs because the lifecycle of the Memory Object exceeds the length of time it exists in the program.
- Garbage Collection: Solves the memory management issues that need to be considered during programming, effectively solves the memory leakage problem, and makes full use of idle memory space. Java objects do not have the concept of scope. Only object references have scope.
- Basic operations(1) discover useless objects; (2) reclaim the space occupied by useless objects and release them into the space that can be used again by the program.
- Recycling time: The specific occurrence time of garbage collection is unpredictable. In general, there are two opportunities:
