package com.zarbosoft.semicompiled;
import java.lang.System;
class Main {
public static void myMain() {
try {
System.out.println("Okay");
} finally {
int x = 72;
}
}
}
Classfile /tmp/semicompiled-2ciu6bbD-16540757321552060719/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 405 bytes
MD5 checksum 9a58e154f5533ab6c79448925fc4fc93
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #5 // com/zarbosoft/semicompiled/Main
super_class: #6 // java/lang/Object
interfaces: 0, fields: 0, methods: 2, attributes: 0
Constant pool:
#1 = Methodref #6.#13 // java/lang/Object."<init>":()V
#2 = Fieldref #14.#15 // java/lang/System.out:Ljava/io/PrintStream;
#3 = String #16 // Okay
#4 = Methodref #17.#18 // java/io/PrintStream.println:(Ljava/lang/String;)V
#5 = Class #19 // com/zarbosoft/semicompiled/Main
#6 = Class #20 // java/lang/Object
#7 = Utf8 <init>
#8 = Utf8 ()V
#9 = Utf8 Code
#10 = Utf8 myMain
#11 = Utf8 StackMapTable
#12 = Class #21 // java/lang/Throwable
#13 = NameAndType #7:#8 // "<init>":()V
#14 = Class #22 // java/lang/System
#15 = NameAndType #23:#24 // out:Ljava/io/PrintStream;
#16 = Utf8 Okay
#17 = Class #25 // java/io/PrintStream
#18 = NameAndType #26:#27 // println:(Ljava/lang/String;)V
#19 = Utf8 com/zarbosoft/semicompiled/Main
#20 = Utf8 java/lang/Object
#21 = Utf8 java/lang/Throwable
#22 = Utf8 java/lang/System
#23 = Utf8 out
#24 = Utf8 Ljava/io/PrintStream;
#25 = Utf8 java/io/PrintStream
#26 = Utf8 println
#27 = Utf8 (Ljava/lang/String;)V
{
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 myMain();
descriptor: ()V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=3, args_size=0
0: getstatic #2 // Field java/lang/System.out:Ljava/io/PrintStream;
3: ldc #3 // String Okay
5: invokevirtual #4 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
8: bipush 72
10: istore_0
11: goto 20
14: astore_1
15: bipush 72
17: istore_2
18: aload_1
19: athrow
20: return
Exception table:
from to target type
0 8 14 any
StackMapTable: number_of_entries = 2
frame_type = 78 /* same_locals_1_stack_item */
stack = [ class java/lang/Throwable ]
frame_type = 5 /* same */
}
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, "myMain", "()V", null, null);
methodVisitor.visitCode();
Label label0 = new Label();
Label label1 = new Label();
Label label2 = new Label();
methodVisitor.visitTryCatchBlock(label0, label1, label2, null);
methodVisitor.visitLabel(label0);
methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
methodVisitor.visitLdcInsn("Okay");
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
methodVisitor.visitLabel(label1);
methodVisitor.visitIntInsn(BIPUSH, 72);
methodVisitor.visitVarInsn(ISTORE, 0);
Label label3 = new Label();
methodVisitor.visitJumpInsn(GOTO, label3);
methodVisitor.visitLabel(label2);
methodVisitor.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/Throwable"});
methodVisitor.visitVarInsn(ASTORE, 1);
methodVisitor.visitIntInsn(BIPUSH, 72);
methodVisitor.visitVarInsn(ISTORE, 2);
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitInsn(ATHROW);
methodVisitor.visitLabel(label3);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(2, 3);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
Classfile /tmp/semicompiled-2ciu6bbD-16540757321552060719/com/zarbosoft/semicompiled/Main.class
Last modified Jun 2, 2024; size 574 bytes
MD5 checksum dfa10093dc1c673bc7416fcdef7b469a
Compiled from "Main.java"
class com.zarbosoft.semicompiled.Main
minor version: 0
major version: 52
flags: (0x0020) ACC_SUPER
this_class: #5 // com/zarbosoft/semicompiled/Main
super_class: #6 // java/lang/Object
interfaces: 0, fields: 0, methods: 2, attributes: 1
Constant pool:
#1 = Methodref #6.#19 // java/lang/Object."<init>":()V
#2 = Fieldref #20.#21 // java/lang/System.out:Ljava/io/PrintStream;
#3 = String #22 // Okay
#4 = Methodref #23.#24 // java/io/PrintStream.println:(Ljava/lang/String;)V
#5 = Class #25 // com/zarbosoft/semicompiled/Main
#6 = Class #26 // java/lang/Object
#7 = Utf8 <init>
#8 = Utf8 ()V
#9 = Utf8 Code
#10 = Utf8 LineNumberTable
#11 = Utf8 LocalVariableTable
#12 = Utf8 this
#13 = Utf8 Lcom/zarbosoft/semicompiled/Main;
#14 = Utf8 myMain
#15 = Utf8 StackMapTable
#16 = Class #27 // java/lang/Throwable
#17 = Utf8 SourceFile
#18 = Utf8 Main.java
#19 = NameAndType #7:#8 // "<init>":()V
#20 = Class #28 // java/lang/System
#21 = NameAndType #29:#30 // out:Ljava/io/PrintStream;
#22 = Utf8 Okay
#23 = Class #31 // java/io/PrintStream
#24 = NameAndType #32:#33 // println:(Ljava/lang/String;)V
#25 = Utf8 com/zarbosoft/semicompiled/Main
#26 = Utf8 java/lang/Object
#27 = Utf8 java/lang/Throwable
#28 = Utf8 java/lang/System
#29 = Utf8 out
#30 = Utf8 Ljava/io/PrintStream;
#31 = Utf8 java/io/PrintStream
#32 = Utf8 println
#33 = Utf8 (Ljava/lang/String;)V
{
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 myMain();
descriptor: ()V
flags: (0x0009) ACC_PUBLIC, ACC_STATIC
Code:
stack=2, locals=3, args_size=0
0: getstatic #2 // Field java/lang/System.out:Ljava/io/PrintStream;
3: ldc #3 // String Okay
5: invokevirtual #4 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
8: bipush 72
10: istore_0
11: goto 20
14: astore_1
15: bipush 72
17: istore_2
18: aload_1
19: athrow
20: return
Exception table:
from to target type
0 8 14 any
LineNumberTable:
line 7: 0
line 8: 20
LocalVariableTable:
Start Length Slot Name Signature
StackMapTable: number_of_entries = 2
frame_type = 78 /* same_locals_1_stack_item */
stack = [ class java/lang/Throwable ]
frame_type = 5 /* same */
}
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, "myMain", "()V", null, null);
methodVisitor.visitCode();
Label label0 = new Label();
Label label1 = new Label();
Label label2 = new Label();
methodVisitor.visitTryCatchBlock(label0, label1, label2, null);
methodVisitor.visitLabel(label0);
methodVisitor.visitLineNumber(7, label0);
methodVisitor.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
methodVisitor.visitLdcInsn("Okay");
methodVisitor.visitMethodInsn(
INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
methodVisitor.visitLabel(label1);
methodVisitor.visitIntInsn(BIPUSH, 72);
methodVisitor.visitVarInsn(ISTORE, 0);
Label label3 = new Label();
methodVisitor.visitJumpInsn(GOTO, label3);
methodVisitor.visitLabel(label2);
methodVisitor.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/Throwable"});
methodVisitor.visitVarInsn(ASTORE, 1);
methodVisitor.visitIntInsn(BIPUSH, 72);
methodVisitor.visitVarInsn(ISTORE, 2);
methodVisitor.visitVarInsn(ALOAD, 1);
methodVisitor.visitInsn(ATHROW);
methodVisitor.visitLabel(label3);
methodVisitor.visitLineNumber(8, label3);
methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
methodVisitor.visitInsn(RETURN);
methodVisitor.visitMaxs(2, 3);
methodVisitor.visitEnd();
}
classWriter.visitEnd();
return classWriter.toByteArray();
}
}
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