Edit D:\app\Administrator\product\11.2.0\dbhome_1\jdk\lib\sun\tools\tree\Vset.class
?? 1 i 1 2 ()I ()V ()Z (I)V (I)Z (JJ[J)V ...DEAD_END <clinit> <init> Code ConstantValue DEAD_END I J LineNumberTable SourceFile VBITS [J addDAandJoinDU addVar addVarUnassigned append clearDeadEnd clearVar copy emptyX firstDAandSecondDU fullX growX isDeadEnd isReallyDeadEnd java/lang/Object java/lang/StringBuffer join length removeAdditionalVars sun/tools/java/Constants sun/tools/tree/Vset testVar testVarUnassigned toString uset varLimit vset x { {DEAD_END} @???????? # $ ( ) Lsun/tools/tree/Vset; ()Ljava/lang/String; (Ljava/lang/String;)V (C)Ljava/lang/StringBuffer; (I)Ljava/lang/StringBuffer; ()Lsun/tools/tree/Vset; (I)Lsun/tools/tree/Vset; ,(Ljava/lang/String;)Ljava/lang/StringBuffer; ,(Lsun/tools/tree/Vset;)Lsun/tools/tree/Vset; A(Lsun/tools/tree/Vset;Lsun/tools/tree/Vset;)Lsun/tools/tree/Vset; - / 0 : &