Как исправить ошибку llegal start of expression?

Question

[lisonok10]

public static Optional<ConditionSolver> convertToSolver(AssumeInstruction assumeInstruction) {
        public class Visitor extends AbstractInstructionVisitor {
            public ConditionSolver solver = null;

            @Override
            public void assumeEq(IROperand iROperand, IROperand iROperand2, boolean bl) {
                this.solver = new ConditionSolver(iROperand, iROperand2, bl ? BVCondType.NotEquals : BVCondType.Equals);
            }

            @Override
            public void assumeGreater(IROperand iROperand, IROperand iROperand2, boolean bl, boolean bl2) {
                this.solver = new ConditionSolver(iROperand, iROperand2, bl ? BVCondType.NotGreater : BVCondType.Greater);
            }

            @Override
            public void assumeInvoke(CalledProcedureId calledProcedureId, BaseSymbol baseSymbol, boolean bl) {
            }

            @Override
            public void assumeTrue(IROperand iROperand, boolean bl) {
                AbstractConstant abstractConstant = iROperand.getSymbol().getType().isBoolean() ? BoolConstant.FALSE : NullConstant.NULL;
                this.solver = new ConditionSolver(iROperand, (IROperand)abstractConstant, bl ? BVCondType.Equals : BVCondType.NotEquals);
            }
        }
        Visitor visitor = new Visitor();
        assumeInstruction.accept(visitor);
        return Optional.ofNullable(visitor.solver);
    }

Answer 1

[Dmitry Roo]

Класс не может быть внутри метода