transaction.tex.old

国外的数据结构与算法分析用书

\begin{program}
\PACKAGE\ Accounts;\\
\\[\emptyline]
\textrm{/**}\>\textrm{This class saves the details of a command for monthly statements}\\
\>\textrm{and to permit audits.*/}\\
\PUBLIC\ \CLASS\ Transaction\\
$\{$\\
\>\textrm{/**}\>\textrm{The amount of money involved in the transaction */}\\
\>\FLOAT\ amount;\\
\\[\emptyline]
\>\textrm{/**} \textrm{	The line of credit involved in the transaction */}\\
\>\FLOAT\ lineOfCredit;\\
\\[\emptyline]
\>\textrm{/**}\>\textrm{The date of the transaction */}\\
\>\INT\ date;\\
\\[\emptyline]
\>\textrm{/**}\>\textrm{A description of the transaction */}\\
\>String description;\\
\\[\emptyline]
\>\textrm{/**}\>\textrm{A constructor for a transaction that takes in}\\
\>\>\textrm{a date, description, amount, and line of credit */}\\
\>\PUBLIC\ Transaction(\INT\ d, String des, \FLOAT\ amt, \FLOAT\ loc)\\
\>$\{$\\
\>\>date = d;\\
\>\>description = des;\\
\>\>amount = amt;\\
\>\>lineOfCredit = loc;\\
\>$\}$\\
\\[\emptyline]
\>\textrm{/**}\>\textrm{Return a string representation of the transaction */}\\
\>\PUBLIC\ String toString()\\
\>$\{$\\
\>\>String blanks = "                    ";\\
\>\>blanks += blanks; \textrm{// now 40 blank spaces}\\
\>\>String result = "$\backslash$n" + date;\\
\>\>result += blanks.substring(0, 10-result.length()) + description;\\
\>\>\IF(lineOfCredit != 0.0)\\
\>\>\>result += lineOfCredit;\\
\>\>result += blanks.substring(0, 45-result.length()) + amount;\\
\>\>\RETURN\ result;\\
\>$\}$\\
$\}$\\
\end{program}
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