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POandroid can't find class from external jar
 

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    <p>I am trying to create a simple test app that basically extends the Android Hello World tutorial app by invoking some simple functionality from an external JAR. However, when I run the app, it can't find the class from the JAR. What am I doing wrong?</p> <p>Here's entire source of the JAR:</p> <pre><code>package com.mytests.pow; public class power2 { private double d; public power2() { d = 0.0; } public String stp2(double dd) { d = dd*dd; return String.format("%e", d); } } </code></pre> <p>And here's the "Hello World ++" source:</p> <pre><code>package com.myLuceneTests.namespace; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; import com.mytests.pow.*; public class AndroidSimpleSIH_EclipseActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { power2 pp = new power2(); String iout = pp.stp2(12.0); super.onCreate(savedInstanceState); TextView tv = new TextView(this); tv.setText(iout); setContentView(tv); } } </code></pre> <p>When I run the app, I get this in logcat:</p> <pre><code>11-22 12:24:52.697 2963 2963 E dalvikvm: Could not find class 'com.mytests.pow.power2', referenced from method com.myLuceneTests.namespace </code></pre> <p>.AndroidSimpleSIH_EclipseActivity.onCreate</p> <p>and then </p> <pre><code>11-22 12:24:52.713 2963 2963 E AndroidRuntime: java.lang.NoClassDefFoundError: com.mytests.pow.power2 </code></pre> <p>What am I doing wrong? Thanks!</p> <p>By the way, my actual goal is to use a real JAR (rather than this toy one) in an Android app. I might have access to the code for that JAR and might be able to rebuild it but it's a big piece of Java code and I am likely to encounter problems when rebuilding it so I am trying to use the pre-built JAR.</p>
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    1. CODid you add the Jar to the build path for your project?
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    2. COSlayton, here's what I did:
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    3. COproject->properties->java build path->libraries tab->Add External JARs. Is this what you're referring to, or is there another step I have to make?
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