JVM方法调用过程

public class Demo{
    public static void main(String[] args) {
        int a=10;
        int b=Short.MAX_VALUE+1;
        int c=a+b;
        System.out.println(c);
    }
}

eric@wuhaodeMacBook-Pro  ~/Desktop/jvM  javap -v Demo
Classfile /Users/eric/Desktop/JVM/Demo.class
  Last modified Nov 11, 2019; size 426 bytes
  MD5 checksum 958b915048427f4b5d8ae3c770331963
  Compiled from "Demo.java"
public class Demo
  minor version: 0
  major version: 54
  flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: #6                          // Demo
  super_class: #7                         // java/lang/Object
  interfaces: 0, fields: 0, methods: 2, attributes: 1
Constant pool:
   #1 = Methodref          #7.#16         // java/lang/Object."<init>":()V
   #2 = Class              #17            // java/lang/Short
   #3 = Integer            32768
   #4 = Fieldref           #18.#19        // java/lang/System.out:Ljava/io/PrintStream;
   #5 = Methodref          #20.#21        // java/io/PrintStream.println:(I)V
   #6 = Class              #22            // Demo
   #7 = Class              #23            // java/lang/Object
   #8 = Utf8               <init>
   #9 = Utf8               ()V
  #10 = Utf8               Code
  #11 = Utf8               LineNumberTable
  #12 = Utf8               main
  #13 = Utf8               ([Ljava/lang/String;)V
  #14 = Utf8               SourceFile
  #15 = Utf8               Demo.java
  #16 = NameAndType        #8:#9          // "<init>":()V
  #17 = Utf8               java/lang/Short
  #18 = Class              #24            // java/lang/System
  #19 = NameAndType        #25:#26        // out:Ljava/io/PrintStream;
  #20 = Class              #27            // java/io/PrintStream
  #21 = NameAndType        #28:#29        // println:(I)V
  #22 = Utf8               Demo
  #23 = Utf8               java/lang/Object
  #24 = Utf8               java/lang/System
  #25 = Utf8               out
  #26 = Utf8               Ljava/io/PrintStream;
  #27 = Utf8               java/io/PrintStream
  #28 = Utf8               println
  #29 = Utf8               (I)V
{
  public Demo();
    descriptor: ()V
    flags: (0x0001) 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: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=1
         0: bipush        10
         2: istore_1
         3: ldc           #3                  // int 32768
         5: istore_2
         6: iload_1
         7: iload_2
         8: iadd
         9: istore_3
        10: getstatic     #4                  // Field java/lang/System.out:Ljava/io/PrintStream;
        13: iload_3
        14: invokevirtual #5                  // Method java/io/PrintStream.println:(I)V
        17: return
      LineNumberTable:
        line 3: 0
        line 4: 3
        line 5: 6
        line 6: 10
        line 7: 17
}
SourceFile: "Demo.java"