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| /Library/Java/JavaVirtualMachines/jdk1.8.0_291.jdk/Contents/Home\bin\javap -v Student
Classfile /Users/baoguo/codes/demo/target/classes/Student.class
Last modified Mar 27, 2022; size 949 bytes
MD5 checksum d681bb32937e73f29729eb34556df6ef
Compiled from "Student.java"
public class Student
minor version: 0
major version: 52
flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
#1 = Methodref #12.#33 // java/lang/Object."<init>":()V
#2 = String #34 // Zhangsan
#3 = Fieldref #6.#35 // Student.name:Ljava/lang/String;
#4 = Fieldref #6.#36 // Student.age:I
#5 = String #37 // Lisi
#6 = Class #38 // Student
#7 = String #39 // Wangwu
#8 = Methodref #6.#40 // Student."<init>":(Ljava/lang/String;I)V
#9 = Fieldref #41.#42 // java/lang/System.out:Ljava/io/PrintStream;
#10 = Methodref #43.#44 // java/io/PrintStream.println:(Ljava/lang/String;)V
#11 = Methodref #43.#45 // java/io/PrintStream.println:(I)V
#12 = Class #46 // java/lang/Object
#13 = Utf8 name
#14 = Utf8 Ljava/lang/String;
#15 = Utf8 age
#16 = Utf8 I
#17 = Utf8 <init>
#18 = Utf8 ()V
#19 = Utf8 Code
#20 = Utf8 LineNumberTable
#21 = Utf8 LocalVariableTable
#22 = Utf8 this
#23 = Utf8 LStudent;
#24 = Utf8 (Ljava/lang/String;I)V
#25 = Utf8 MethodParameters
#26 = Utf8 main
#27 = Utf8 ([Ljava/lang/String;)V
#28 = Utf8 args
#29 = Utf8 [Ljava/lang/String;
#30 = Utf8 stu
#31 = Utf8 SourceFile
#32 = Utf8 Student.java
#33 = NameAndType #17:#18 // "<init>":()V
#34 = Utf8 Zhangsan
#35 = NameAndType #13:#14 // name:Ljava/lang/String;
#36 = NameAndType #15:#16 // age:I
#37 = Utf8 Lisi
#38 = Utf8 Student
#39 = Utf8 Wangwu
#40 = NameAndType #17:#24 // "<init>":(Ljava/lang/String;I)V
#41 = Class #47 // java/lang/System
#42 = NameAndType #48:#49 // out:Ljava/io/PrintStream;
#43 = Class #50 // java/io/PrintStream
#44 = NameAndType #51:#52 // println:(Ljava/lang/String;)V
#45 = NameAndType #51:#53 // println:(I)V
#46 = Utf8 java/lang/Object
#47 = Utf8 java/lang/System
#48 = Utf8 out
#49 = Utf8 Ljava/io/PrintStream;
#50 = Utf8 java/io/PrintStream
#51 = Utf8 println
#52 = Utf8 (Ljava/lang/String;)V
#53 = Utf8 (I)V
{
java.lang.String name;
descriptor: Ljava/lang/String;
flags:
int age;
descriptor: I
flags:
public Student();
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: ldc #2 // String Zhangsan
7: putfield #3 // Field name:Ljava/lang/String;
10: aload_0
11: bipush 10
13: putfield #4 // Field age:I
16: aload_0
17: ldc #5 // String Lisi
19: putfield #3 // Field name:Ljava/lang/String;
22: aload_0
23: bipush 20
25: putfield #4 // Field age:I
28: return
LineNumberTable:
line 5: 0
line 2: 4
line 3: 10
line 15: 16
line 16: 22
line 7: 28
LocalVariableTable:
Start Length Slot Name Signature
0 29 0 this LStudent;
public Student(java.lang.String, int);
descriptor: (Ljava/lang/String;I)V
flags: ACC_PUBLIC
Code:
stack=2, locals=3, args_size=3
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: aload_0
5: ldc #2 // String Zhangsan
7: putfield #3 // Field name:Ljava/lang/String;
10: aload_0
11: bipush 10
13: putfield #4 // Field age:I
16: aload_0
17: ldc #5 // String Lisi
19: putfield #3 // Field name:Ljava/lang/String;
22: aload_0
23: bipush 20
25: putfield #4 // Field age:I
28: aload_0
29: aload_1
30: putfield #3 // Field name:Ljava/lang/String;
33: aload_0
34: iload_2
35: putfield #4 // Field age:I
38: return
LineNumberTable:
line 9: 0
line 2: 4
line 3: 10
line 15: 16
line 16: 22
line 10: 28
line 11: 33
line 12: 38
LocalVariableTable:
Start Length Slot Name Signature
0 39 0 this LStudent;
0 39 1 name Ljava/lang/String;
0 39 2 age I
MethodParameters:
Name Flags
name
age
public static void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
flags: ACC_PUBLIC, ACC_STATIC
Code:
stack=4, locals=2, args_size=1
0: new #6 // class Student
3: dup
4: ldc #7 // String Wangwu
6: bipush 30
8: invokespecial #8 // Method "<init>":(Ljava/lang/String;I)V
11: astore_1
12: getstatic #9 // Field java/lang/System.out:Ljava/io/PrintStream;
15: aload_1
16: getfield #3 // Field name:Ljava/lang/String;
19: invokevirtual #10 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
22: getstatic #9 // Field java/lang/System.out:Ljava/io/PrintStream;
25: aload_1
26: getfield #4 // Field age:I
29: invokevirtual #11 // Method java/io/PrintStream.println:(I)V
32: return
LineNumberTable:
line 20: 0
line 21: 12
line 22: 22
line 23: 32
LocalVariableTable:
Start Length Slot Name Signature
0 33 0 args [Ljava/lang/String;
12 21 1 stu LStudent;
MethodParameters:
Name Flags
args
}
SourceFile: "Student.java"
Process finished with exit code 0
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