stringOnTop = stringConstant;
    public void sawOpcode(int seen) {	switch (seen) {	case LDC:		constantOnTOS = true;		stringOnTop = stringConstant;		return; 	case INVOKEVIRTUAL:		if (refConstant.equals("java.lang.String.intern : ()Ljava.lang.String;")		 || refConstant.equals("java.lang.String.equals : (Ljava.lang.Object;)Z"))			callToInternSeen = true;		break; 	case IF_ACMPEQ:	case IF_ACMPNE:		if (constantOnTOS && !callToInternSeen)                   bugReporter.reportBug(new BugInstance("ES_COMPARING_STRINGS_WITH_EQ", NORMAL_PRIORITY)                        .addClassAndMethod(this)                        .addSourceLine(this, PC));		break;	default: 		break;	}	constantOnTOS = false;	}	