Semicompiled

package com.zarbosoft.semicompiled;

class MyClass {
  private void myMethod() {}

  public void myMethod2() {
    myMethod();
  }
}

Classfile /tmp/semicompiled-2rOLz2Xy-6823136843636855618/com/zarbosoft/semicompiled/MyClass.class
  Last modified Jun 2, 2024; size 240 bytes
  MD5 checksum f58d02417d3d6d01b9b005bdd41bbd9b
class com.zarbosoft.semicompiled.MyClass
  minor version: 0
  major version: 52
  flags: (0x0020) ACC_SUPER
  this_class: #3                          // com/zarbosoft/semicompiled/MyClass
  super_class: #4                         // java/lang/Object
  interfaces: 0, fields: 0, methods: 3, attributes: 0
Constant pool:
   #1 = Methodref          #4.#10         // java/lang/Object."<init>":()V
   #2 = Methodref          #3.#11         // com/zarbosoft/semicompiled/MyClass.myMethod:()V
   #3 = Class              #12            // com/zarbosoft/semicompiled/MyClass
   #4 = Class              #13            // java/lang/Object
   #5 = Utf8               <init>
   #6 = Utf8               ()V
   #7 = Utf8               Code
   #8 = Utf8               myMethod
   #9 = Utf8               myMethod2
  #10 = NameAndType        #5:#6          // "<init>":()V
  #11 = NameAndType        #8:#6          // myMethod:()V
  #12 = Utf8               com/zarbosoft/semicompiled/MyClass
  #13 = Utf8               java/lang/Object
{
  com.zarbosoft.semicompiled.MyClass();
    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

  private void myMethod();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=0, locals=1, args_size=1
         0: return

  public void myMethod2();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #2                  // Method myMethod:()V
         4: return
}

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 MyClassDump 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/MyClass", 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_PRIVATE, "myMethod", "()V", null, null);
      methodVisitor.visitCode();
      methodVisitor.visitInsn(RETURN);
      methodVisitor.visitMaxs(0, 1);
      methodVisitor.visitEnd();
    }
    {
      methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "myMethod2", "()V", null, null);
      methodVisitor.visitCode();
      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(
          INVOKESPECIAL, "com/zarbosoft/semicompiled/MyClass", "myMethod", "()V", false);
      methodVisitor.visitInsn(RETURN);
      methodVisitor.visitMaxs(1, 1);
      methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
  }
}

Classfile /tmp/semicompiled-2rOLz2Xy-6823136843636855618/com/zarbosoft/semicompiled/MyClass.class
  Last modified Jun 2, 2024; size 455 bytes
  MD5 checksum 15795c1560c593b036e7e9c802710d11
  Compiled from "MyClass.java"
class com.zarbosoft.semicompiled.MyClass
  minor version: 0
  major version: 52
  flags: (0x0020) ACC_SUPER
  this_class: #3                          // com/zarbosoft/semicompiled/MyClass
  super_class: #4                         // java/lang/Object
  interfaces: 0, fields: 0, methods: 3, attributes: 1
Constant pool:
   #1 = Methodref          #4.#16         // java/lang/Object."<init>":()V
   #2 = Methodref          #3.#17         // com/zarbosoft/semicompiled/MyClass.myMethod:()V
   #3 = Class              #18            // com/zarbosoft/semicompiled/MyClass
   #4 = Class              #19            // 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/MyClass;
  #12 = Utf8               myMethod
  #13 = Utf8               myMethod2
  #14 = Utf8               SourceFile
  #15 = Utf8               MyClass.java
  #16 = NameAndType        #5:#6          // "<init>":()V
  #17 = NameAndType        #12:#6         // myMethod:()V
  #18 = Utf8               com/zarbosoft/semicompiled/MyClass
  #19 = Utf8               java/lang/Object
{
  com.zarbosoft.semicompiled.MyClass();
    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 3: 0
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       5     0  this   Lcom/zarbosoft/semicompiled/MyClass;

  private void myMethod();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=0, locals=1, args_size=1
         0: return
      LineNumberTable:
        line 5: 0
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       1     0  this   Lcom/zarbosoft/semicompiled/MyClass;

  public void myMethod2();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #2                  // Method myMethod:()V
         4: return
      LineNumberTable:
        line 8: 0
        line 9: 4
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       5     0  this   Lcom/zarbosoft/semicompiled/MyClass;
}
SourceFile: "MyClass.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 MyClassDump 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/MyClass", null, "java/lang/Object", null);

    classWriter.visitSource("MyClass.java", null);

    {
      methodVisitor = classWriter.visitMethod(0, "<init>", "()V", null, null);
      methodVisitor.visitCode();
      Label label0 = new Label();
      methodVisitor.visitLabel(label0);
      methodVisitor.visitLineNumber(3, 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/MyClass;", null, label0, label1, 0);
      methodVisitor.visitMaxs(1, 1);
      methodVisitor.visitEnd();
    }
    {
      methodVisitor = classWriter.visitMethod(ACC_PRIVATE, "myMethod", "()V", null, null);
      methodVisitor.visitCode();
      Label label0 = new Label();
      methodVisitor.visitLabel(label0);
      methodVisitor.visitLineNumber(5, label0);
      methodVisitor.visitInsn(RETURN);
      Label label1 = new Label();
      methodVisitor.visitLabel(label1);
      methodVisitor.visitLocalVariable(
          "this", "Lcom/zarbosoft/semicompiled/MyClass;", null, label0, label1, 0);
      methodVisitor.visitMaxs(0, 1);
      methodVisitor.visitEnd();
    }
    {
      methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "myMethod2", "()V", null, null);
      methodVisitor.visitCode();
      Label label0 = new Label();
      methodVisitor.visitLabel(label0);
      methodVisitor.visitLineNumber(8, label0);
      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(
          INVOKESPECIAL, "com/zarbosoft/semicompiled/MyClass", "myMethod", "()V", false);
      Label label1 = new Label();
      methodVisitor.visitLabel(label1);
      methodVisitor.visitLineNumber(9, label1);
      methodVisitor.visitInsn(RETURN);
      Label label2 = new Label();
      methodVisitor.visitLabel(label2);
      methodVisitor.visitLocalVariable(
          "this", "Lcom/zarbosoft/semicompiled/MyClass;", null, label0, label2, 0);
      methodVisitor.visitMaxs(1, 1);
      methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
  }
}