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org.apache.poi.xssf.usermodel.XSSFWorkbook
java.lang.NoClassDefFoundError: org.apache.poi.xssf.usermodel.XSSFWorkbook	at com.evernote.test.Xls_Reader.(Xls_Reader.java:36)	at com.evernote.test.Main.readTestCaseXls(Main.java:87)	at com.evernote.test.Main.testCreateAccount(Main.java:62)	at java.lang.reflect.Method.invokeNative(Native Method)	at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214)	at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199)	at android.test.ActivityInstrumentationTestCase2.runTest(ActivityInstrumentationTestCase2.java:192)	at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:190)	at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:175)	at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)	at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1661)