ava.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
问题 I am Using docx4j to read Docx file from sd card. I have problem with org.apache.log4j.Logger library. I have even tried to add it externally. but it is still giving me same problem. build.gradle apply plugin: 'com.android.application' android { compileSdkVersion 23 buildToolsVersion "23.0.2" defaultConfig { applicationId "com.shvet.pdfreaders" minSdkVersion 11 targetSdkVersion 23 versionCode 1 versionName "1.0" multiDexEnabled true } buildTypes { release { minifyEnabled false proguardFiles