org.lsmp.djepExamples.PrintExample Maven / Gradle / Ivy
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JEP is a Java library for parsing and evaluating mathematical expressions.
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/* @author rich
* Created on 26-Feb-2004
*/
package org.lsmp.djepExamples;
import org.nfunk.jep.*;
import org.lsmp.djep.xjep.*;
/**
* @author Rich Morris
* Created on 26-Feb-2004
*/
public class PrintExample {
public static void main(String[] args) {
XJep j = new XJep();
j.addStandardConstants();
j.addStandardFunctions();
j.addComplex();
j.setAllowUndeclared(true);
j.setImplicitMul(true);
j.setAllowAssignment(true);
try
{
// parse expression
Node node = j.parse("a*b+c*(d+sin(x))");
// print it
j.println(node);
// convert to string
String str = j.toString(node);
System.out.println("String is '"+str+"'");
j.getPrintVisitor().setMode(PrintVisitor.FULL_BRACKET,true);
j.println(node);
j.getPrintVisitor().setMode(PrintVisitor.FULL_BRACKET,false);
Node node2=j.parse("1*x^1+0");
j.println(node2);
Node simp=j.simplify(node2);
j.println(simp);
}
catch(ParseException e) { System.out.println("Parse error"); }
}
}