JVM Stack(方法栈)

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public class Test {
        public static void main(String[] args) {
                methodA();
        }

        public static void methodA() {
                methodB();
        }
    
        public static void methodB() {
                methodC();
        }
    
        public static void methodC() {
                //
        }
}

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Classfile /Users/baoguo/codes/demo3/Test.class
  Last modified Mar 25, 2022; size 451 bytes
  MD5 checksum 82ebbb2b39b5fe233c861af30de4a984
  Compiled from "Test.java"
public class Test
  minor version: 0
  major version: 52
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #6.#18         // java/lang/Object."<init>":()V
   #2 = Methodref          #5.#19         // Test.methodA:()V
   #3 = Methodref          #5.#20         // Test.methodB:()V
   #4 = Methodref          #5.#21         // Test.methodC:()V
   #5 = Class              #22            // Test
   #6 = Class              #23            // java/lang/Object
   #7 = Utf8               <init>
   #8 = Utf8               ()V
   #9 = Utf8               Code
  #10 = Utf8               LineNumberTable
  #11 = Utf8               main
  #12 = Utf8               ([Ljava/lang/String;)V
  #13 = Utf8               methodA
  #14 = Utf8               methodB
  #15 = Utf8               methodC
  #16 = Utf8               SourceFile
  #17 = Utf8               Test.java
  #18 = NameAndType        #7:#8          // "<init>":()V
  #19 = NameAndType        #13:#8         // methodA:()V
  #20 = NameAndType        #14:#8         // methodB:()V
  #21 = NameAndType        #15:#8         // methodC:()V
  #22 = Utf8               Test
  #23 = Utf8               java/lang/Object
{
  public Test();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return
      LineNumberTable:
        line 1: 0

  public static void main(java.lang.String[]);
    descriptor: ([Ljava/lang/String;)V
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=0, locals=1, args_size=1
         0: invokestatic  #2                  // Method methodA:()V
         3: return
      LineNumberTable:
        line 3: 0
        line 4: 3

  public static void methodA();
    descriptor: ()V
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=0, locals=0, args_size=0
         0: invokestatic  #3                  // Method methodB:()V
         3: return
      LineNumberTable:
        line 7: 0
        line 8: 3

  public static void methodB();
    descriptor: ()V
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=0, locals=0, args_size=0
         0: invokestatic  #4                  // Method methodC:()V
         3: return
      LineNumberTable:
        line 11: 0
        line 12: 3

  public static void methodC();
    descriptor: ()V
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=0, locals=0, args_size=0
         0: return
      LineNumberTable:
        line 16: 0
}
SourceFile: "Test.java"