javap -v main.class
{ public static void main(String[] args) { int a=10; int b=10; int c=a+b; return; } }
Classfile /F:/myCode/java/jvm/0710_demo01/untitled/target/classes/org/example/main.class Last modified 2023年7月10日; size 447 bytes MD5 checksum 675a0d673d66326ba82ea00f9de64972 Compiled from "Main.java" public class org.example.Main minor version: 0 major version: 55 flags: (0x0021) ACC_PUBLIC, ACC_SUPER this_class: #2 // org/example/Main super_class: #3 // java/lang/Object interfaces: 0, fields: 0, methods: 2, attributes: 1 Constant pool: #1 = Methodref #3.#21 // java/lang/Object."<init>":()V #2 = Class #22 // org/example/Main #3 = Class #23 // java/lang/Object #4 = Utf8 <init> #5 = Utf8 ()V #6 = Utf8 Code #7 = Utf8 LineNumberTable #8 = Utf8 LocalVariableTable #9 = Utf8 this #10 = Utf8 Lorg/example/Main; #11 = Utf8 main #12 = Utf8 ([Ljava/lang/String;)V #13 = Utf8 args #14 = Utf8 [Ljava/lang/String; #15 = Utf8 a #16 = Utf8 I #17 = Utf8 b #18 = Utf8 c #19 = Utf8 SourceFile #20 = Utf8 Main.java #21 = NameAndType #4:#5 // "<init>":()V #22 = Utf8 org/example/Main #23 = Utf8 java/lang/Object { public org.example.Main(); descriptor: ()V flags: (0x0001) ACC_PUBLIC Code: stack=1, locals=1, args_size=1 line 5: 0 line 6: 3 line 7: 6 line 8: 10 LocalVariableTable: Start Length Slot Name Signature 0 11 0 args [Ljava/lang/String; 3 8 1 a I 6 5 2 b I 10 1 3 c I } SourceFile: "Main.java"
