package com.zarbosoft.semicompiled;
import java.lang.String;
class Main {
float x;
public static void main(String[] args) {
Main m = new Main();
m.x = 3;
float y = m.x;
}
}
Classfile /tmp/semicompiled-4IeGaY2q-z4EZ08YJ-11563250988110108485/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 297 bytes
MD5 checksum 1ca0b4509b9cf77ffd307d974160fded
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #2 // com/zarbosoft/semicompiled/Main
super_class: #6 // java/lang/Object
interfaces: 0, fields: 1, methods: 2, attributes: 0
Constant pool:
#1 = Methodref #6.#16 // java/lang/Object."<init>":()V
#2 = Class #17 // com/zarbosoft/semicompiled/Main
#3 = Methodref #2.#16 // com/zarbosoft/semicompiled/Main."<init>":()V
#4 = Float 3.0f
#5 = Fieldref #2.#18 // com/zarbosoft/semicompiled/Main.x:F
#6 = Class #19 // java/lang/Object
#7 = Utf8 x
#8 = Utf8 F
#9 = Utf8 <init>
#10 = Utf8 ()V
#11 = Utf8 Code
#12 = Utf8 main
#13 = Utf8 ([Ljava/lang/String;)V
#14 = Utf8 MethodParameters
#15 = Utf8 args
#16 = NameAndType #9:#10 // "<init>":()V
#17 = Utf8 com/zarbosoft/semicompiled/Main
#18 = NameAndType #7:#8 // x:F
#19 = Utf8 java/lang/Object
{
float x;
descriptor: F
flags: (0x0000)
com.zarbosoft.semicompiled.Main();
descriptor: ()V
flags: (0x0000)
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
public static void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=3, args_size=1
0: new #2 // class com/zarbosoft/semicompiled/Main
3: dup
4: invokespecial #3 // Method "<init>":()V
7: astore_1
8: aload_1
9: ldc #4 // float 3.0f
11: putfield #5 // Field x:F
14: aload_1
15: getfield #5 // Field x:F
18: fstore_2
19: return
MethodParameters:
Name Flags
args
}
package asm.com.zarbosoft.semicompiled;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.ConstantDynamic;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.RecordComponentVisitor;
import org.objectweb.asm.Type;
import org.objectweb.asm.TypePath;
public class MainDump implements Opcodes {
public static byte[] dump() throws Exception {
ClassWriter classWriter = new ClassWriter(0);
FieldVisitor fieldVisitor;
RecordComponentVisitor recordComponentVisitor;
MethodVisitor methodVisitor;
AnnotationVisitor annotationVisitor0;
classWriter.visit(
V1_8, ACC_SUPER, "com/zarbosoft/semicompiled/Main", null, "java/lang/Object", null);
{
fieldVisitor = classWriter.visitField(0, "x", "F", null, null);
fieldVisitor.visitEnd();
}
{
methodVisitor = classWriter.visitMethod(0, "<init>", "()V", null, null);
methodVisitor.visitCode();
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(1, 1);
methodVisitor.visitEnd();
}
{
methodVisitor =
classWriter.visitMethod(
ACC_PUBLIC | ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
methodVisitor.visitParameter("args", 0);
methodVisitor.visitCode();
methodVisitor.visitTypeInsn(NEW, "com/zarbosoft/semicompiled/Main");
methodVisitor.visitInsn(DUP);
methodVisitor.visitMethodInsn(
INVOKESPECIAL, "com/zarbosoft/semicompiled/Main", "<init>", "()V", false);
methodVisitor.visitVarInsn(ASTORE, 1);
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitLdcInsn(new Float("3.0"));
methodVisitor.visitFieldInsn(PUTFIELD, "com/zarbosoft/semicompiled/Main", "x", "F");
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitFieldInsn(GETFIELD, "com/zarbosoft/semicompiled/Main", "x", "F");
methodVisitor.visitVarInsn(FSTORE, 2);
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(2, 3);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
Classfile /tmp/semicompiled-4IeGaY2q-z4EZ08YJ-11563250988110108485/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 526 bytes
MD5 checksum c3522acbb452b85e69cbed652b85ca42
Compiled from "Main.java"
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #2 // com/zarbosoft/semicompiled/Main
super_class: #6 // java/lang/Object
interfaces: 0, fields: 1, methods: 2, attributes: 1
Constant pool:
#1 = Methodref #6.#25 // java/lang/Object."<init>":()V
#2 = Class #26 // com/zarbosoft/semicompiled/Main
#3 = Methodref #2.#25 // com/zarbosoft/semicompiled/Main."<init>":()V
#4 = Float 3.0f
#5 = Fieldref #2.#27 // com/zarbosoft/semicompiled/Main.x:F
#6 = Class #28 // java/lang/Object
#7 = Utf8 x
#8 = Utf8 F
#9 = Utf8 <init>
#10 = Utf8 ()V
#11 = Utf8 Code
#12 = Utf8 LineNumberTable
#13 = Utf8 LocalVariableTable
#14 = Utf8 this
#15 = Utf8 Lcom/zarbosoft/semicompiled/Main;
#16 = Utf8 main
#17 = Utf8 ([Ljava/lang/String;)V
#18 = Utf8 args
#19 = Utf8 [Ljava/lang/String;
#20 = Utf8 m
#21 = Utf8 y
#22 = Utf8 MethodParameters
#23 = Utf8 SourceFile
#24 = Utf8 Main.java
#25 = NameAndType #9:#10 // "<init>":()V
#26 = Utf8 com/zarbosoft/semicompiled/Main
#27 = NameAndType #7:#8 // x:F
#28 = Utf8 java/lang/Object
{
float x;
descriptor: F
flags: (0x0000)
com.zarbosoft.semicompiled.Main();
descriptor: ()V
flags: (0x0000)
Code:
stack=1, locals=1, args_size=1
0: aload_0
1: invokespecial #1 // Method java/lang/Object."<init>":()V
4: return
LineNumberTable:
line 5: 0
LocalVariableTable:
Start Length Slot Name Signature
0 5 0 this Lcom/zarbosoft/semicompiled/Main;
public static void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=3, args_size=1
0: new #2 // class com/zarbosoft/semicompiled/Main
3: dup
4: invokespecial #3 // Method "<init>":()V
7: astore_1
8: aload_1
9: ldc #4 // float 3.0f
11: putfield #5 // Field x:F
14: aload_1
15: getfield #5 // Field x:F
18: fstore_2
19: return
LineNumberTable:
line 9: 0
line 10: 19
LocalVariableTable:
Start Length Slot Name Signature
0 20 0 args [Ljava/lang/String;
8 12 1 m Lcom/zarbosoft/semicompiled/Main;
19 1 2 y F
MethodParameters:
Name Flags
args
}
SourceFile: "Main.java"
package asm.com.zarbosoft.semicompiled;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.ConstantDynamic;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.RecordComponentVisitor;
import org.objectweb.asm.Type;
import org.objectweb.asm.TypePath;
public class MainDump implements Opcodes {
public static byte[] dump() throws Exception {
ClassWriter classWriter = new ClassWriter(0);
FieldVisitor fieldVisitor;
RecordComponentVisitor recordComponentVisitor;
MethodVisitor methodVisitor;
AnnotationVisitor annotationVisitor0;
classWriter.visit(
V1_8, ACC_SUPER, "com/zarbosoft/semicompiled/Main", null, "java/lang/Object", null);
classWriter.visitSource("Main.java", null);
{
fieldVisitor = classWriter.visitField(0, "x", "F", null, null);
fieldVisitor.visitEnd();
}
{
methodVisitor = classWriter.visitMethod(0, "<init>", "()V", null, null);
methodVisitor.visitCode();
Label label0 = new Label();
methodVisitor.visitLabel(label0);
methodVisitor.visitLineNumber(5, label0);
methodVisitor.visitVarInsn(ALOAD, 0);
methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
methodVisitor.visitInsn(RETURN);
Label label1 = new Label();
methodVisitor.visitLabel(label1);
methodVisitor.visitLocalVariable(
"this", "Lcom/zarbosoft/semicompiled/Main;", null, label0, label1, 0);
methodVisitor.visitMaxs(1, 1);
methodVisitor.visitEnd();
}
{
methodVisitor =
classWriter.visitMethod(
ACC_PUBLIC | ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
methodVisitor.visitParameter("args", 0);
methodVisitor.visitCode();
Label label0 = new Label();
methodVisitor.visitLabel(label0);
methodVisitor.visitLineNumber(9, label0);
methodVisitor.visitTypeInsn(NEW, "com/zarbosoft/semicompiled/Main");
methodVisitor.visitInsn(DUP);
methodVisitor.visitMethodInsn(
INVOKESPECIAL, "com/zarbosoft/semicompiled/Main", "<init>", "()V", false);
methodVisitor.visitVarInsn(ASTORE, 1);
Label label1 = new Label();
methodVisitor.visitLabel(label1);
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitLdcInsn(new Float("3.0"));
methodVisitor.visitFieldInsn(PUTFIELD, "com/zarbosoft/semicompiled/Main", "x", "F");
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitFieldInsn(GETFIELD, "com/zarbosoft/semicompiled/Main", "x", "F");
methodVisitor.visitVarInsn(FSTORE, 2);
Label label2 = new Label();
methodVisitor.visitLabel(label2);
methodVisitor.visitLineNumber(10, label2);
methodVisitor.visitInsn(RETURN);
Label label3 = new Label();
methodVisitor.visitLabel(label3);
methodVisitor.visitLocalVariable("args", "[Ljava/lang/String;", null, label0, label3, 0);
methodVisitor.visitLocalVariable(
"m", "Lcom/zarbosoft/semicompiled/Main;", null, label1, label3, 1);
methodVisitor.visitLocalVariable("y", "F", null, label2, label3, 2);
methodVisitor.visitMaxs(2, 3);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
Join the thriving social scene at github.com/andrewbaxter/semicompiled.