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This article mainly introduces the relevant knowledge of "how to solve the java memory leak problem". The editor shows you the operation process through the actual case, the operation method is simple and fast, and it is practical. I hope this article "how to solve the java memory leak problem" can help you solve the problem.

1. Concept

A memory leak in Java means that the memory of objects that are no longer in use cannot be reclaimed, that is, a memory leak.

2. The cause of leakage

For Java, we do not need (and have no way to) free memory ourselves, and useless objects are automatically cleared by GC, which greatly simplifies our programming work. In fact, however, sometimes objects that are no longer in use cannot be released in GC's view, resulting in a memory leak.

3. The influence on the program

Memory leakage is one of the main reasons for application OOM. As we all know, the memory allocated by Android system for each application program is limited. When an application program produces more memory leakage, it will inevitably cause the memory needed by the application program to exceed the memory limit allocated by the system, resulting in memory overflow and application program Crash.

4. Examples

Public class Simple {Object object; public void method1 () {object = new Object (); / / What are the collection classes in other code} Java the collections in Java are mainly divided into four categories:

1. List list: ordered and repeatable

2. Queue queue: orderly and repeatable

3. Set collection: non-repeatable

4. Map mapping: unordered, key unique, value not unique.

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