CODEWITHSUNDEEP
javajavac
chriswhite
chriswhite

Reputation: 1400

Correctly Importing Apache Commons Math Package

I am trying to use the SimplexSolver class in the Apache Commons Math package, but I can't seem to import the package correctly; all of the following is happening in a fixed directory called 'Java'. I downloaded commons-math3-3.1.1 and put the unzipped folder into the 'Java' directory.

Here is some example code, HelloWorld.java, saved in the 'Java' directory:

import org.apache.commons.math;

public class HelloWorld {
        public static void main (String[] args) {
                System.out.println("Hello World!");
                }
}

I then proceed to type the following command into the terminal:

javac -cp ./commons-math3-3.1.1/commons-math3-3.1.1.jar:. HelloWorld.java

And I am greeted with the following error:

HelloWorld.java:1: package org.apache.commons does not exist
import org.apache.commons.math;
                         ^
1 error

I'm sure I'm misunderstanding the correct way to import downloaded packages, and any help would be greatly appreciated. I've tried variants of the import line, such as import org.apache.commons.math.*; and things like that, but none of them have worked so far.

Thanks in advance!

Upvotes: 2

Views: 3806

Answers (2)

ggrandes
ggrandes

Reputation: 2133

You miss the 3 :-)

import org.apache.commons.math3;

Upvotes: 1

Dan D.
Dan D.

Reputation: 32391

The correct package name is 

org.apache.commons.math3.

Upvotes: 4

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