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实验软装置（基于表达式的计算器ExprEval） 很不错的 有帮助于学习提高

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<A NAME="logical"><!-- --></A><H3>
logical</H3>
<PRE>
<A HREF="../scanner/ScannerTable.html" title="scanner 中的类">ScannerTable</A> <B>logical</B></PRE>
<DL>
<DD>table for logical
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="arith"><!-- --></A><H3>
arith</H3>
<PRE>
<A HREF="../scanner/ScannerTable.html" title="scanner 中的类">ScannerTable</A> <B>arith</B></PRE>
<DL>
<DD>table for arithmetic
<P>
<DL>
</DL>
</DL>
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<A NAME="number"><!-- --></A><H3>
number</H3>
<PRE>
<A HREF="../scanner/ScannerTable.html" title="scanner 中的类">ScannerTable</A> <B>number</B></PRE>
<DL>
<DD>table for number
<P>
<DL>
</DL>
</DL>
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<A NAME="bool"><!-- --></A><H3>
bool</H3>
<PRE>
<A HREF="../scanner/ScannerTable.html" title="scanner 中的类">ScannerTable</A> <B>bool</B></PRE>
<DL>
<DD>table for bool
<P>
<DL>
</DL>
</DL>
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<A NAME="tmpToken"><!-- --></A><H3>
tmpToken</H3>
<PRE>
<A HREF="../scanner/Token.html" title="scanner 中的类">Token</A> <B>tmpToken</B></PRE>
<DL>
<DD>tmp token
<P>
<DL>
</DL>
</DL>
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<A NAME="pos"><!-- --></A><H3>
pos</H3>
<PRE>
int <B>pos</B></PRE>
<DL>
<DD>ptr for input stream
<P>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

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<B>构造方法详细信息</B></FONT></TH>
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<A NAME="Scanner(java.lang.String)"><!-- --></A><H3>
Scanner</H3>
<PRE>
public <B>Scanner</B>(java.lang.String&nbsp;Stream)
        throws java.io.IOException,
               exceptions.ExpressionException</PRE>
<DL>
<DD>constructor
<P>
<DL>
<DT><B>参数：</B><DD><CODE>Stream</CODE> - input string
<DT><B>抛出：</B>
<DD><CODE>java.io.IOException</CODE>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<B>方法详细信息</B></FONT></TH>
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</TABLE>

<A NAME="preprocess()"><!-- --></A><H3>
preprocess</H3>
<PRE>
private void <B>preprocess</B>()
                 throws exceptions.ExpressionException</PRE>
<DL>
<DD>reprocess the input string
<P>
<DD><DL>

<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getNextChar()"><!-- --></A><H3>
getNextChar</H3>
<PRE>
private char <B>getNextChar</B>()
                  throws exceptions.ExpressionException</PRE>
<DL>
<DD>get next character
<P>
<DD><DL>

<DT><B>返回：</B><DD>next character(omitting blank)
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getId()"><!-- --></A><H3>
getId</H3>
<PRE>
private boolean <B>getId</B>()
               throws exceptions.ExpressionException</PRE>
<DL>
<DD>get Identifier
<P>
<DD><DL>

<DT><B>返回：</B><DD>true if identifier got
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getRelop()"><!-- --></A><H3>
getRelop</H3>
<PRE>
private boolean <B>getRelop</B>()
                  throws exceptions.ExpressionException</PRE>
<DL>
<DD>get relop
<P>
<DD><DL>

<DT><B>返回：</B><DD>true if relop got
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getLogic()"><!-- --></A><H3>
getLogic</H3>
<PRE>
private boolean <B>getLogic</B>()
                  throws exceptions.ExpressionException</PRE>
<DL>
<DD>get logical operator
<P>
<DD><DL>

<DT><B>返回：</B><DD>true if logical operator got
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getArith()"><!-- --></A><H3>
getArith</H3>
<PRE>
private boolean <B>getArith</B>()
                  throws exceptions.ExpressionException</PRE>
<DL>
<DD>get arithmetic operator
<P>
<DD><DL>

<DT><B>返回：</B><DD>true if arithmetic operator got
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getNumber()"><!-- --></A><H3>
getNumber</H3>
<PRE>
private boolean <B>getNumber</B>()
                   throws exceptions.ExpressionException</PRE>
<DL>
<DD>get number
<P>
<DD><DL>

<DT><B>返回：</B><DD>true if number got
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getBool()"><!-- --></A><H3>
getBool</H3>
<PRE>
private boolean <B>getBool</B>()
                 throws exceptions.ExpressionException</PRE>
<DL>
<DD>get boolean
<P>
<DD><DL>

<DT><B>返回：</B><DD>true if boolean got
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getNeg()"><!-- --></A><H3>
getNeg</H3>
<PRE>
private boolean <B>getNeg</B>()
                throws exceptions.ExpressionException</PRE>
<DL>
<DD>get negative
<P>
<DD><DL>

<DT><B>返回：</B><DD>true if negative got
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getNextToken()"><!-- --></A><H3>
getNextToken</H3>
<PRE>
public <A HREF="../scanner/Token.html" title="scanner 中的类">Token</A> <B>getNextToken</B>()
                   throws exceptions.ExpressionException</PRE>
<DL>
<DD>get next token
<P>
<DD><DL>

<DT><B>返回：</B><DD>next token
<DT><B>抛出：</B>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
<PRE>
public static void <B>main</B>(java.lang.String[]&nbsp;args)
                 throws java.io.IOException,
                        exceptions.ExpressionException</PRE>
<DL>
<DD><DL>

<DT><B>抛出：</B>
<DD><CODE>java.io.IOException</CODE>
<DD><CODE>exceptions.ExpressionException</CODE></DL>
</DD>
</DL>
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