Semicompiled

package com.zarbosoft.semicompiled;

import java.lang.String;

class Main {
  public static void main(String[] args) {
    new MyClass();
  }
}

Classfile /tmp/semicompiled-Jur3Ngqh-12203260937889173738/com/zarbosoft/semicompiled/Main.class
  Last modified Jun 2, 2024; size 295 bytes
  MD5 checksum 77c7691e26a27dae5ea725fb559afb07
class com.zarbosoft.semicompiled.Main
  minor version: 0
  major version: 52
  flags: (0x0020) ACC_SUPER
  this_class: #4                          // com/zarbosoft/semicompiled/Main
  super_class: #5                         // java/lang/Object
  interfaces: 0, fields: 0, methods: 2, attributes: 0
Constant pool:
   #1 = Methodref          #5.#13         // java/lang/Object."<init>":()V
   #2 = Class              #14            // com/zarbosoft/semicompiled/MyClass
   #3 = Methodref          #2.#13         // com/zarbosoft/semicompiled/MyClass."<init>":()V
   #4 = Class              #15            // com/zarbosoft/semicompiled/Main
   #5 = Class              #16            // java/lang/Object
   #6 = Utf8               <init>
   #7 = Utf8               ()V
   #8 = Utf8               Code
   #9 = Utf8               main
  #10 = Utf8               ([Ljava/lang/String;)V
  #11 = Utf8               MethodParameters
  #12 = Utf8               args
  #13 = NameAndType        #6:#7          // "<init>":()V
  #14 = Utf8               com/zarbosoft/semicompiled/MyClass
  #15 = Utf8               com/zarbosoft/semicompiled/Main
  #16 = 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 void main(java.lang.String[]);
    descriptor: ([Ljava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
         0: new           #2                  // class com/zarbosoft/semicompiled/MyClass
         3: dup
         4: invokespecial #3                  // Method com/zarbosoft/semicompiled/MyClass."<init>":()V
         7: pop
         8: 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, "main", "([Ljava/lang/String;)V", null, null);
      methodVisitor.visitParameter("args", 0);
      methodVisitor.visitCode();
      methodVisitor.visitTypeInsn(NEW, "com/zarbosoft/semicompiled/MyClass");
      methodVisitor.visitInsn(DUP);
      methodVisitor.visitMethodInsn(
          INVOKESPECIAL, "com/zarbosoft/semicompiled/MyClass", "<init>", "()V", false);
      methodVisitor.visitInsn(POP);
      methodVisitor.visitInsn(RETURN);
      methodVisitor.visitMaxs(2, 1);
      methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
  }
}

Classfile /tmp/semicompiled-Jur3Ngqh-12203260937889173738/com/zarbosoft/semicompiled/Main.class
  Last modified Jun 2, 2024; size 496 bytes
  MD5 checksum 6083d6b1d0b648170b4cae1f0e8d3832
  Compiled from "Main.java"
class com.zarbosoft.semicompiled.Main
  minor version: 0
  major version: 52
  flags: (0x0020) ACC_SUPER
  this_class: #4                          // com/zarbosoft/semicompiled/Main
  super_class: #5                         // java/lang/Object
  interfaces: 0, fields: 0, methods: 2, attributes: 1
Constant pool:
   #1 = Methodref          #5.#20         // java/lang/Object."<init>":()V
   #2 = Class              #21            // com/zarbosoft/semicompiled/MyClass
   #3 = Methodref          #2.#20         // com/zarbosoft/semicompiled/MyClass."<init>":()V
   #4 = Class              #22            // com/zarbosoft/semicompiled/Main
   #5 = Class              #23            // java/lang/Object
   #6 = Utf8               <init>
   #7 = Utf8               ()V
   #8 = Utf8               Code
   #9 = Utf8               LineNumberTable
  #10 = Utf8               LocalVariableTable
  #11 = Utf8               this
  #12 = Utf8               Lcom/zarbosoft/semicompiled/Main;
  #13 = Utf8               main
  #14 = Utf8               ([Ljava/lang/String;)V
  #15 = Utf8               args
  #16 = Utf8               [Ljava/lang/String;
  #17 = Utf8               MethodParameters
  #18 = Utf8               SourceFile
  #19 = Utf8               Main.java
  #20 = NameAndType        #6:#7          // "<init>":()V
  #21 = Utf8               com/zarbosoft/semicompiled/MyClass
  #22 = Utf8               com/zarbosoft/semicompiled/Main
  #23 = 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 void main(java.lang.String[]);
    descriptor: ([Ljava/lang/String;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
         0: new           #2                  // class com/zarbosoft/semicompiled/MyClass
         3: dup
         4: invokespecial #3                  // Method com/zarbosoft/semicompiled/MyClass."<init>":()V
         7: pop
         8: return
      LineNumberTable:
        line 7: 0
        line 8: 8
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       9     0  args   [Ljava/lang/String;
    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, "main", "([Ljava/lang/String;)V", null, null);
      methodVisitor.visitParameter("args", 0);
      methodVisitor.visitCode();
      Label label0 = new Label();
      methodVisitor.visitLabel(label0);
      methodVisitor.visitLineNumber(7, label0);
      methodVisitor.visitTypeInsn(NEW, "com/zarbosoft/semicompiled/MyClass");
      methodVisitor.visitInsn(DUP);
      methodVisitor.visitMethodInsn(
          INVOKESPECIAL, "com/zarbosoft/semicompiled/MyClass", "<init>", "()V", false);
      methodVisitor.visitInsn(POP);
      Label label1 = new Label();
      methodVisitor.visitLabel(label1);
      methodVisitor.visitLineNumber(8, label1);
      methodVisitor.visitInsn(RETURN);
      Label label2 = new Label();
      methodVisitor.visitLabel(label2);
      methodVisitor.visitLocalVariable("args", "[Ljava/lang/String;", null, label0, label2, 0);
      methodVisitor.visitMaxs(2, 1);
      methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
  }
}

package com.zarbosoft.semicompiled;

class MyClass {
  MyClass(int x) {}

  MyClass() {
    this(4);
    int x = 4;
  }
}

Classfile /tmp/semicompiled-Jur3Ngqh-12203260937889173738/com/zarbosoft/semicompiled/MyClass.class
  Last modified Jun 2, 2024; size 234 bytes
  MD5 checksum eab974a62590586486bd341b39a45cf8
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: 2, attributes: 0
Constant pool:
   #1 = Methodref          #4.#11         // java/lang/Object."<init>":()V
   #2 = Methodref          #3.#12         // com/zarbosoft/semicompiled/MyClass."<init>":(I)V
   #3 = Class              #13            // com/zarbosoft/semicompiled/MyClass
   #4 = Class              #14            // java/lang/Object
   #5 = Utf8               <init>
   #6 = Utf8               (I)V
   #7 = Utf8               Code
   #8 = Utf8               MethodParameters
   #9 = Utf8               x
  #10 = Utf8               ()V
  #11 = NameAndType        #5:#10         // "<init>":()V
  #12 = NameAndType        #5:#6          // "<init>":(I)V
  #13 = Utf8               com/zarbosoft/semicompiled/MyClass
  #14 = Utf8               java/lang/Object
{
  com.zarbosoft.semicompiled.MyClass(int);
    descriptor: (I)V
    flags: (0x0000)
    Code:
      stack=1, locals=2, args_size=2
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return
    MethodParameters:
      Name                           Flags
      x

  com.zarbosoft.semicompiled.MyClass();
    descriptor: ()V
    flags: (0x0000)
    Code:
      stack=2, locals=2, args_size=1
         0: aload_0
         1: iconst_4
         2: invokespecial #2                  // Method "<init>":(I)V
         5: iconst_4
         6: istore_1
         7: 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>", "(I)V", null, null);
      methodVisitor.visitParameter("x", 0);
      methodVisitor.visitCode();
      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
      methodVisitor.visitInsn(RETURN);
      methodVisitor.visitMaxs(1, 2);
      methodVisitor.visitEnd();
    }
    {
      methodVisitor = classWriter.visitMethod(0, "<init>", "()V", null, null);
      methodVisitor.visitCode();
      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitInsn(ICONST_4);
      methodVisitor.visitMethodInsn(
          INVOKESPECIAL, "com/zarbosoft/semicompiled/MyClass", "<init>", "(I)V", false);
      methodVisitor.visitInsn(ICONST_4);
      methodVisitor.visitVarInsn(ISTORE, 1);
      methodVisitor.visitInsn(RETURN);
      methodVisitor.visitMaxs(2, 2);
      methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
  }
}

Classfile /tmp/semicompiled-Jur3Ngqh-12203260937889173738/com/zarbosoft/semicompiled/MyClass.class
  Last modified Jun 2, 2024; size 447 bytes
  MD5 checksum 1a034dbf42fbfb588ee8ae0524b7656b
  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: 2, attributes: 1
Constant pool:
   #1 = Methodref          #4.#18         // java/lang/Object."<init>":()V
   #2 = Methodref          #3.#19         // com/zarbosoft/semicompiled/MyClass."<init>":(I)V
   #3 = Class              #20            // com/zarbosoft/semicompiled/MyClass
   #4 = Class              #21            // java/lang/Object
   #5 = Utf8               <init>
   #6 = Utf8               (I)V
   #7 = Utf8               Code
   #8 = Utf8               LineNumberTable
   #9 = Utf8               LocalVariableTable
  #10 = Utf8               this
  #11 = Utf8               Lcom/zarbosoft/semicompiled/MyClass;
  #12 = Utf8               x
  #13 = Utf8               I
  #14 = Utf8               MethodParameters
  #15 = Utf8               ()V
  #16 = Utf8               SourceFile
  #17 = Utf8               MyClass.java
  #18 = NameAndType        #5:#15         // "<init>":()V
  #19 = NameAndType        #5:#6          // "<init>":(I)V
  #20 = Utf8               com/zarbosoft/semicompiled/MyClass
  #21 = Utf8               java/lang/Object
{
  com.zarbosoft.semicompiled.MyClass(int);
    descriptor: (I)V
    flags: (0x0000)
    Code:
      stack=1, locals=2, args_size=2
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return
      LineNumberTable:
        line 4: 0
        line 5: 4
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       5     0  this   Lcom/zarbosoft/semicompiled/MyClass;
            0       5     1     x   I
    MethodParameters:
      Name                           Flags
      x

  com.zarbosoft.semicompiled.MyClass();
    descriptor: ()V
    flags: (0x0000)
    Code:
      stack=2, locals=2, args_size=1
         0: aload_0
         1: iconst_4
         2: invokespecial #2                  // Method "<init>":(I)V
         5: iconst_4
         6: istore_1
         7: return
      LineNumberTable:
        line 8: 0
        line 9: 7
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
            0       8     0  this   Lcom/zarbosoft/semicompiled/MyClass;
            7       1     1     x   I
}
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>", "(I)V", null, null);
      methodVisitor.visitParameter("x", 0);
      methodVisitor.visitCode();
      Label label0 = new Label();
      methodVisitor.visitLabel(label0);
      methodVisitor.visitLineNumber(4, label0);
      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
      Label label1 = new Label();
      methodVisitor.visitLabel(label1);
      methodVisitor.visitLineNumber(5, label1);
      methodVisitor.visitInsn(RETURN);
      Label label2 = new Label();
      methodVisitor.visitLabel(label2);
      methodVisitor.visitLocalVariable(
          "this", "Lcom/zarbosoft/semicompiled/MyClass;", null, label0, label2, 0);
      methodVisitor.visitLocalVariable("x", "I", null, label0, label2, 1);
      methodVisitor.visitMaxs(1, 2);
      methodVisitor.visitEnd();
    }
    {
      methodVisitor = classWriter.visitMethod(0, "<init>", "()V", null, null);
      methodVisitor.visitCode();
      Label label0 = new Label();
      methodVisitor.visitLabel(label0);
      methodVisitor.visitLineNumber(8, label0);
      methodVisitor.visitVarInsn(ALOAD, 0);
      methodVisitor.visitInsn(ICONST_4);
      methodVisitor.visitMethodInsn(
          INVOKESPECIAL, "com/zarbosoft/semicompiled/MyClass", "<init>", "(I)V", false);
      methodVisitor.visitInsn(ICONST_4);
      methodVisitor.visitVarInsn(ISTORE, 1);
      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.visitLocalVariable("x", "I", null, label1, label2, 1);
      methodVisitor.visitMaxs(2, 2);
      methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
  }
}