https://github.com/jruby/jruby/jruby-core: JRuby is the effort to recreate the Ruby (https://www.ruby-lang.org) interpreter in Java. (JRuby)
  • headius
  • enebo
  • wmeissner
  • BanzaiMan
  • mkristian 
public class org.jruby.RubyIO$Sysopen
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.jruby.RubyIO$Sysopen
  super_class: java.lang.Object
{
  public java.lang.String fname;
    descriptor: Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC

  public int oflags;
    descriptor: I
    flags: (0x0001) ACC_PUBLIC

  public int perm;
    descriptor: I
    flags: (0x0001) ACC_PUBLIC

  public jnr.constants.platform.Errno errno;
    descriptor: Ljnr/constants/platform/Errno;
    flags: (0x0001) ACC_PUBLIC

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.jruby.RubyIO$Sysopen this
         0: .line 1220
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.jruby.RubyIO$Sysopen this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/jruby/RubyIO$Sysopen;
}
SourceFile: "RubyIO.java"
NestHost: org.jruby.RubyIO
InnerClasses:
  public Sysopen = org.jruby.RubyIO$Sysopen of org.jruby.RubyIO