class文件结构

package com.test.myMy;

public class myJava{
    public int a = 12;
    private int inc(){
        return a+1;
    }
}

C:\Users\mayn\Desktop>javac myJava.java

C:\Users\mayn\Desktop>javap -verbose myJava.class

得到内容与下：

Classfile /C:/Users/mayn/Desktop/myJava.class
  Last modified 2019-11-17; size 293 bytes
  MD5 checksum 913d2b031354314112f91ea4bcdbf712
  Compiled from "myJava.java"
public class com.test.myMy.myJava
  minor version: 0
  major version: 52
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #4.#15         // java/lang/Object."<init>":()V
   #2 = Fieldref           #3.#16         // com/test/myMy/myJava.a:I
   #3 = Class              #17            // com/test/myMy/myJava
   #4 = Class              #18            // java/lang/Object
   #5 = Utf8               a
   #6 = Utf8               I
   #7 = Utf8               <init>
   #8 = Utf8               ()V
   #9 = Utf8               Code
  #10 = Utf8               LineNumberTable
  #11 = Utf8               inc
  #12 = Utf8               ()I
  #13 = Utf8               SourceFile
  #14 = Utf8               myJava.java
  #15 = NameAndType        #7:#8          // "<init>":()V
  #16 = NameAndType        #5:#6          // a:I
  #17 = Utf8               com/test/myMy/myJava
  #18 = Utf8               java/lang/Object
{
  public int a;
    descriptor: I
    flags: ACC_PUBLIC

  public com.test.myMy.myJava();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: aload_0
         5: bipush        12
         7: putfield      #2                  // Field a:I
        10: return
      LineNumberTable:
        line 3: 0
        line 4: 4
}
SourceFile: "myJava.java"