Shulou(Shulou.com)05/31 Report--

This article mainly introduces "the example analysis of the operation principle of the stack in the java virtual machine". In the daily operation, I believe that many people have doubts about the example analysis of the operation principle of the stack in the java virtual machine. The editor consulted all kinds of materials and sorted out the simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts of "the example analysis of the operation principle of the stack in the java virtual machine". Next, please follow the editor to study!

Operation principle

1. Stack frames contained in different threads are not allowed to reference each other.

2. If the current method calls another method, when the method returns, the current stack frame will send the execution result of this method back to the current stack pin, and the virtual machine will discard the current stack frame, making the previous stack frame become the current stack frame again.

3. The Java method has two ways to return a function.

One is the normal function return, using the return instruction; the other is throwing an exception. No matter which method is used, it will cause the stack frame to be popped.

Example

Public class StackFrameTest {public static void main (String [] args) {StackFrameTest stackFrameTest = new StackFrameTest (); stackFrameTest.method1 ();} public void method1 () {System.out.println ("method1 () starts execution"); method2 (); System.out.println ("method1 () execution ends") } public int method2 () {System.out.println ("method2 () start execution"); int I = 100; int m = (int) method3 (); System.out.println ("method2 () is about to end"); return I + m;} public double method3 () {System.out.println ("method3 () start execution"); double j = 3.1 System.out.println ("method3 () is coming to an end"); return j;}} at this point, the study on "instance analysis of the operation principle of the stack in the java virtual machine" is over, hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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