.class-file

I'm aware that Java-the-compilable-programming-language is not one and the same as Java-the-bytecode-format-for-JVM-execution. There are examples of things that are valid in the .class format but not in the .java source code, such as constructor-less classes and synthetic methods. If we hand-craft a .class file with a reserved Java language keyword (e.g. int , while ) as the class, method, or field name, will the Java virtual machine accept it for loading? If the class is loaded, does it imply that the only way to access this class or member is through Java reflection, because the name is

I want to change .class file's method. I installed JD Eclipse Decompiler and opened the .class file. I added some codes and save .class file. But, .class file is not changing. I don't know how to use decompiler. And if is it possible, how to change .class file without using decompiler. I am using Ubuntu. Regards EDIT: Here is my decompiled code: /* */ package org.hibernate.id; /* */ /* */ import java.io.Serializable; /* */ import java.sql.ResultSet; /* */ import java.sql.SQLException; /* */ import java.util.HashMap; /* */ import java.util.Properties; /* */ import org.apache.commons.logging.Log

A .class file is a rather well documented format that defines sections and size, and therefore maximum sizes as well. For instance, a .class file contains a magic number (4 bytes), a version (4 bytes), the constant pool (variable size), etc. But sizes can be defined on several levels: you can have 65535 methods and each is limited to 65535 bytes. What are the other limits? And, if you would make the largest .class file possible, what size would it be? If needed, limit answers to Java. Meaning that if Scala or Clojure (or...) change some limits, disregard those values. The JVM specification

Is there a utility (or eclipse plugin) for editing java class files ? I'd like to manipulate the bytecode of a java class file without recompiling it nor having a complete buildpath. E.g. to rename methods, add/delete instructions, change constants etc. The only utilities I found are: classeditor but it's very limited in functionality ( e.g. renaming of things and manipulating instructions isn't possible ). jbe doesn't save changes (maybe because class verifying fails - before I made any changes, although the class runs perfectly) (jbe initially had a classpath issue, adding the class path to