title: Linux Ubuntu Android SDK manager not starting up - android:java: not found
body: <p>I extracted the android SDK into a folder i made called "/usr/android/android-sdk-linux". I go into "tools/" and double click the executable file "android", click "Run in Terminal" but nothing happens. I also click "Run" but again nothing happens. i run it in terminal (<code>./android</code> command), and i get:</p>
  
  <pre><code>./android: 1: ./android: java: not found
  ./android: 1: ./android: java: not found
  ./android: 110: exec: java: not found
  </code></pre>
  
  <p>So why is this happening?</p>
  
  <p><strong>Edit:</strong> Here are the results of <code>~$ java</code></p>
  
  <pre><code>* default-jre
  * gcj-4.6-jre-headless
  * openjdk-6-jre-headless
  * gcj-4.5-jre-headless
  * openjdk-7-jre-headless
  </code></pre>