title: How to install jmathplot.jar and use it in Java?
body: <p>I need to install the following library in order to use it in Java, however I do not know how to do, could you please help me? (I am relatively new to Java)</p>
  
  <p>jmathplot.jar
  jmatharray.jar
  website:
  <a href="https://code.google.com/p/jmatharray/" rel="nofollow">https://code.google.com/p/jmatharray/</a>
  <a href="https://code.google.com/p/jmathplot/" rel="nofollow">https://code.google.com/p/jmathplot/</a></p>
  
  <p>I tried to do the following but none has worked so far:
  -run the .jar files with java with the command prompt, this option did not work because "java could not find main class"
  -put the file in the project directory
  -put the file in the library directory</p>
  
  <p>what am I doing wrong?
  thank you</p>