title: Error: Could not find or load main class at one call and no error at another call in the same script
body: <p>I am working on an implementation of ESA, I changed one of the java files, compiled it using the command</p>
  
  <pre><code>javac -cp lib/*:esalib.jar ./src/clldsystem/esa/ESAAnalyzer.java
  </code></pre>
  
  <p>and pasted the .class file to the corresponding directory(esalib.jar/clldsystem/esa) in the .jar file. Also i changed the name the original corresponding .class file.</p>
  
  <p>Next, i have a python script which uses a command</p>
  
  <pre><code>java -cp lib/*:esalib.jar clldsystem.esa.ESAAnalyzer param1 param2
  </code></pre>
  
  <p>but on running the python script, the command runs fine when used as:</p>
  
  <pre><code>x='java -cp "lib/*:esalib.jar" clldsystem.esa.ESAAnalyzer computer apple'
  args=shlex.split(x)
  p=subprocess.Popen(args)
  p.wait()
  </code></pre>
  
  <p>But gives an Error: Could not find or load main class when used as:</p>
  
  <pre><code>x='java -cp "lib/*:esalib.jar" clldsystem.esa.ESAAnalyzer word1 word2'
  args=x.split()
  p=subprocess.Popen(args)
  p.wait()
  </code></pre>
  
  <p>in the same script. I am reading the variables word1 and word2 from a file.
  Why would it work fine at one place and give an error at other? I have checked using print statements that i am reading from the file correctly, so that must not be an issue.
  Thanks</p>
  
  <p>here are the details of what happened:</p>
  
  <pre><code>nishant@nishant-Inspiron-1545:~/esalib$ python test.py
  ['java', '-cp', 'lib/*:esalib.jar', 'clldsystem.esa.ESAAnalyzer', 'bottle', 'apple']
  index loaded to memory
  bottl
  appl
  vector 1 dimensions: 1782
  vector 2 dimensions: 2766
  0.024397644631615697
  beach
  ['people', 'sand', 'desert', 'snow']
  ['java', '-cp', '"lib/*:esalib.jar"', 'clldsystem.esa.ESAAnalyzer', 'word1', 'word2']
  Error: Could not find or load main class clldsystem.esa.ESAAnalyzer
  beach 
  people
  ['java', '-cp', '"lib/*:esalib.jar"', 'clldsystem.esa.ESAAnalyzer', 'word1', 'word2']
  Error: Could not find or load main class clldsystem.esa.ESAAnalyzer
  beach
  sand
  </code></pre>
  
  <p>and so on for every iteration</p>