How does java operate on the data stack

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

Description

1. Manipulate the stack. In the process of executing the method, the data is written to the stack or extracted according to the byte code.

2. It is mainly used to save the intermediate results of the calculation process, and at the same time as the temporary storage space of variables in the calculation process.

3. The operation stack is the working area of the jvm execution engine. When a method is just started to execute, a new stack framework is also created, and the operation stack of the method is empty.

Example

What are the collection classes of public class Test {public int test (int a, int b) {int c = a + b; return c;}} 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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