package com.zarbosoft.semicompiled;
import java.lang.String;
class Main {
public static int myMethod() {
return 70;
}
public static void main(String[] args) {
int x = myMethod();
}
}
Classfile /tmp/semicompiled-t9dx2v63-1062347109616160483/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 302 bytes
MD5 checksum e48b6d03be2cd858829ca0f03c838e17
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #3 // com/zarbosoft/semicompiled/Main
super_class: #4 // java/lang/Object
interfaces: 0, fields: 0, methods: 3, attributes: 0
Constant pool:
#1 = Methodref #4.#14 // java/lang/Object."<init>":()V
#2 = Methodref #3.#15 // com/zarbosoft/semicompiled/Main.myMethod:()I
#3 = Class #16 // com/zarbosoft/semicompiled/Main
#4 = Class #17 // java/lang/Object
#5 = Utf8 <init>
#6 = Utf8 ()V
#7 = Utf8 Code
#8 = Utf8 myMethod
#9 = Utf8 ()I
#10 = Utf8 main
#11 = Utf8 ([Ljava/lang/String;)V
#12 = Utf8 MethodParameters
#13 = Utf8 args
#14 = NameAndType #5:#6 // "<init>":()V
#15 = NameAndType #8:#9 // myMethod:()I
#16 = Utf8 com/zarbosoft/semicompiled/Main
#17 = Utf8 java/lang/Object
{
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 int myMethod();
descriptor: ()I
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=1, locals=0, args_size=0
0: bipush 70
2: ireturn
public static void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=1, locals=2, args_size=1
0: invokestatic #2 // Method myMethod:()I
3: istore_1
4: 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);
{
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, "myMethod", "()I", null, null);
methodVisitor.visitCode();
methodVisitor.visitIntInsn(BIPUSH, 70);
methodVisitor.visitInsn(IRETURN);
methodVisitor.visitMaxs(1, 0);
methodVisitor.visitEnd();
}
{
methodVisitor =
classWriter.visitMethod(
ACC_PUBLIC | ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
methodVisitor.visitParameter("args", 0);
methodVisitor.visitCode();
methodVisitor.visitMethodInsn(
INVOKESTATIC, "com/zarbosoft/semicompiled/Main", "myMethod", "()I", false);
methodVisitor.visitVarInsn(ISTORE, 1);
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(1, 2);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
Classfile /tmp/semicompiled-t9dx2v63-1062347109616160483/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 533 bytes
MD5 checksum 94dc551acfe2ad377cd3b6cabcc12296
Compiled from "Main.java"
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #3 // com/zarbosoft/semicompiled/Main
super_class: #4 // java/lang/Object
interfaces: 0, fields: 0, methods: 3, attributes: 1
Constant pool:
#1 = Methodref #4.#23 // java/lang/Object."<init>":()V
#2 = Methodref #3.#24 // com/zarbosoft/semicompiled/Main.myMethod:()I
#3 = Class #25 // com/zarbosoft/semicompiled/Main
#4 = Class #26 // java/lang/Object
#5 = Utf8 <init>
#6 = Utf8 ()V
#7 = Utf8 Code
#8 = Utf8 LineNumberTable
#9 = Utf8 LocalVariableTable
#10 = Utf8 this
#11 = Utf8 Lcom/zarbosoft/semicompiled/Main;
#12 = Utf8 myMethod
#13 = Utf8 ()I
#14 = Utf8 main
#15 = Utf8 ([Ljava/lang/String;)V
#16 = Utf8 args
#17 = Utf8 [Ljava/lang/String;
#18 = Utf8 x
#19 = Utf8 I
#20 = Utf8 MethodParameters
#21 = Utf8 SourceFile
#22 = Utf8 Main.java
#23 = NameAndType #5:#6 // "<init>":()V
#24 = NameAndType #12:#13 // myMethod:()I
#25 = Utf8 com/zarbosoft/semicompiled/Main
#26 = Utf8 java/lang/Object
{
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 int myMethod();
descriptor: ()I
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=1, locals=0, args_size=0
0: bipush 70
2: ireturn
LineNumberTable:
line 7: 0
public static void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=1, locals=2, args_size=1
0: invokestatic #2 // Method myMethod:()I
3: istore_1
4: return
LineNumberTable:
line 11: 0
line 12: 4
LocalVariableTable:
Start Length Slot Name Signature
0 5 0 args [Ljava/lang/String;
4 1 1 x I
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);
{
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, "myMethod", "()I", null, null);
methodVisitor.visitCode();
Label label0 = new Label();
methodVisitor.visitLabel(label0);
methodVisitor.visitLineNumber(7, label0);
methodVisitor.visitIntInsn(BIPUSH, 70);
methodVisitor.visitInsn(IRETURN);
methodVisitor.visitMaxs(1, 0);
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(11, label0);
methodVisitor.visitMethodInsn(
INVOKESTATIC, "com/zarbosoft/semicompiled/Main", "myMethod", "()I", false);
methodVisitor.visitVarInsn(ISTORE, 1);
Label label1 = new Label();
methodVisitor.visitLabel(label1);
methodVisitor.visitLineNumber(12, label1);
methodVisitor.visitInsn(RETURN);
Label label2 = new Label();
methodVisitor.visitLabel(label2);
methodVisitor.visitLocalVariable("args", "[Ljava/lang/String;", null, label0, label2, 0);
methodVisitor.visitLocalVariable("x", "I", null, label1, label2, 1);
methodVisitor.visitMaxs(1, 2);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
Join the thriving social scene at github.com/andrewbaxter/semicompiled.