Java Doc for ExprCalc.java in  » Database-ORM » MMBase » org » mmbase » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » MMBase » org.mmbase.util   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.mmbase.util.ExprCalc ExprCalc public class ExprCalc (Code) Class to calculate expressions. It implements a simple LL(1) grammar to calculate simple expressions with the basic operators +,-,*,/ and brackets. The grammar in EBNF notation: <expr> -> <term> { '+' <term> } | <term> { '-' <term> } <term> -> <fact> { '*' <fact> } | <fact> { '/' <fact> } <fact> -> <nmeral> | '(' <expr> ')' author:    Arnold Beck version:    $Id: ExprCalc.java,v 1.12 2004/09/29 14:29:24 pierre Exp $ Constructor Summary public   ExprCalc(String input)      Method Summary public  double getResult()      Constructor Detail ExprCalc public ExprCalc(String input)(Code) Constructor of ExrpCalc Parameters:   input - a String representing the expression Method Detail getResult public double getResult()(Code) Returns the calculated value of the expression Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)