File list (Check if you may need any files):
Intepreter\.classpath
..........\.project
..........\bin\cn\pku\eecs\cs\hq\AssignStm.class
..........\...\..\...\....\..\..\CompileExce.class
..........\...\..\...\....\..\..\CompoundStm.class
..........\...\..\...\....\..\..\EndStm.class
..........\...\..\...\....\..\..\Exp.class
..........\...\..\...\....\..\..\IdExp.class
..........\...\..\...\....\..\..\Interpreter.class
..........\...\..\...\....\..\..\Lex.class
..........\...\..\...\....\..\..\NumExp.class
..........\...\..\...\....\..\..\OpExp.class
..........\...\..\...\....\..\..\PrintStm.class
..........\...\..\...\....\..\..\Stm.class
..........\...\..\...\....\..\..\Syntax.class
..........\...\..\...\....\..\..\Type.class
..........\...\..\...\....\..\..\Word.class
..........\input.txt
..........\output.txt
..........\src\cn\pku\eecs\cs\hq\AssignStm.java
..........\...\..\...\....\..\..\CompileExce.java
..........\...\..\...\....\..\..\CompoundStm.java
..........\...\..\...\....\..\..\EndStm.java
..........\...\..\...\....\..\..\Exp.java
..........\...\..\...\....\..\..\IdExp.java
..........\...\..\...\....\..\..\Interpreter.java
..........\...\..\...\....\..\..\Lex.java
..........\...\..\...\....\..\..\NumExp.java
..........\...\..\...\....\..\..\OpExp.java
..........\...\..\...\....\..\..\PrintStm.java
..........\...\..\...\....\..\..\Stm.java
..........\...\..\...\....\..\..\Syntax.java
..........\...\..\...\....\..\..\Word.java
..........\bin\cn\pku\eecs\cs\hq
..........\src\cn\pku\eecs\cs\hq
..........\bin\cn\pku\eecs\cs
..........\src\cn\pku\eecs\cs
..........\bin\cn\pku\eecs
..........\src\cn\pku\eecs
..........\bin\cn\pku
..........\src\cn\pku
..........\bin\cn
..........\src\cn
..........\bin
..........\src
Intepreter