Error after adding compile 'com.github.sembozdemir:BooksApiJavaWrapper:1.0.0'

[testProjects2000]

Gradle Duplicate Entry: java.util.zip.ZipException
when i run the project after adding com.github.sembozdemir:BooksApiJavaWrapper:1.0.0

[sembozdemir]

Could you give more details, please? I mean the exact stacktrace output?

[testProjects2000]

Following error shows up only after adding following line "compile 'com.github.sembozdemir:BooksApiJavaWrapper:1.0.0'"

Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'.

com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: com/sembozdemir/booksapi/library/BooksApi$1.class

[sembozdemir]

could you please write this code below in Terminal

./gradlew clean

if it does not still work, could you please write this code below in Terminal again and paste the output here?

./gradlew app:dependencies

[testProjects2000]

i tried ./gradlew clean but still same error so m pasting output of gradelew app:dependencies
C:\Users\lenovo\AndroidStudioProjects\BooksApi>gradlew app:dependencies
:app:dependencies

---

Project :app

_debugAndroidTestApk - ## Internal use, do not manually configure ##
--- com.android.support:multidex-instrumentation:1.0.1
--- com.android.support:multidex:1.0.1

_debugAndroidTestCompile - ## Internal use, do not manually configure ##
--- com.android.support:multidex-instrumentation:1.0.1
--- com.android.support:multidex:1.0.1

debugApk - ## Internal use, do not manually configure ##
+--- com.android.support:multidex:1.0.1
+--- com.android.support:appcompat-v7:23.1.1
| --- com.android.support:support-v4:23.1.1
| --- com.android.support:support-annotations:23.1.1
+--- project :booksapi-lib
| +--- com.google.code.gson:gson:2.4
| +--- com.squareup.retrofit:retrofit:2.0.0-beta2
| | --- com.squareup.okhttp:okhttp:2.5.0 -> 2.7.0
| | --- com.squareup.okio:okio:1.6.0
| +--- com.squareup.retrofit:converter-gson:2.0.0-beta2
| | +--- com.squareup.retrofit:retrofit:2.0.0-beta2 ()
| | --- com.google.code.gson:gson:2.3.1 -> 2.4
| --- com.squareup.okhttp:okhttp:2.7.0 ()
+--- com.squareup.picasso:picasso:2.5.2
--- com.github.sembozdemir:BooksApiJavaWrapper:1.0.0
+--- com.squareup.retrofit:converter-gson:2.0.0-beta2 ()
+--- com.squareup.okhttp:okhttp:2.7.0 (_)
+--- com.google.code.gson:gson:2.4
--- com.squareup.retrofit:retrofit:2.0.0-beta2 (*)

debugCompile - ## Internal use, do not manually configure ##
+--- com.android.support:multidex:1.0.1
+--- com.android.support:appcompat-v7:23.1.1
| --- com.android.support:support-v4:23.1.1
| --- com.android.support:support-annotations:23.1.1
+--- project :booksapi-lib
| +--- com.google.code.gson:gson:2.4
| +--- com.squareup.retrofit:retrofit:2.0.0-beta2
| | --- com.squareup.okhttp:okhttp:2.5.0 -> 2.7.0
| | --- com.squareup.okio:okio:1.6.0
| +--- com.squareup.retrofit:converter-gson:2.0.0-beta2
| | +--- com.squareup.retrofit:retrofit:2.0.0-beta2 ()
| | --- com.google.code.gson:gson:2.3.1 -> 2.4
| --- com.squareup.okhttp:okhttp:2.7.0 ()
+--- com.squareup.picasso:picasso:2.5.2
--- com.github.sembozdemir:BooksApiJavaWrapper:1.0.0
+--- com.squareup.retrofit:converter-gson:2.0.0-beta2 ()
+--- com.squareup.okhttp:okhttp:2.7.0 (_)
+--- com.google.code.gson:gson:2.4
--- com.squareup.retrofit:retrofit:2.0.0-beta2 (*)

_debugUnitTestApk - ## Internal use, do not manually configure ##
--- junit:junit:4.12
--- org.hamcrest:hamcrest-core:1.3

_debugUnitTestCompile - ## Internal use, do not manually configure ##
--- junit:junit:4.12
--- org.hamcrest:hamcrest-core:1.3

releaseApk - ## Internal use, do not manually configure ##
+--- com.android.support:multidex:1.0.1
+--- com.android.support:appcompat-v7:23.1.1
| --- com.android.support:support-v4:23.1.1
| --- com.android.support:support-annotations:23.1.1
+--- project :booksapi-lib
| +--- com.google.code.gson:gson:2.4
| +--- com.squareup.retrofit:retrofit:2.0.0-beta2
| | --- com.squareup.okhttp:okhttp:2.5.0 -> 2.7.0
| | --- com.squareup.okio:okio:1.6.0
| +--- com.squareup.retrofit:converter-gson:2.0.0-beta2
| | +--- com.squareup.retrofit:retrofit:2.0.0-beta2 ()
| | --- com.google.code.gson:gson:2.3.1 -> 2.4
| --- com.squareup.okhttp:okhttp:2.7.0 ()
+--- com.squareup.picasso:picasso:2.5.2
--- com.github.sembozdemir:BooksApiJavaWrapper:1.0.0
+--- com.squareup.retrofit:converter-gson:2.0.0-beta2 ()
+--- com.squareup.okhttp:okhttp:2.7.0 (_)
+--- com.google.code.gson:gson:2.4
--- com.squareup.retrofit:retrofit:2.0.0-beta2 (*)

releaseCompile - ## Internal use, do not manually configure ##
+--- com.android.support:multidex:1.0.1
+--- com.android.support:appcompat-v7:23.1.1
| --- com.android.support:support-v4:23.1.1
| --- com.android.support:support-annotations:23.1.1
+--- project :booksapi-lib
| +--- com.google.code.gson:gson:2.4
| +--- com.squareup.retrofit:retrofit:2.0.0-beta2
| | --- com.squareup.okhttp:okhttp:2.5.0 -> 2.7.0
| | --- com.squareup.okio:okio:1.6.0
| +--- com.squareup.retrofit:converter-gson:2.0.0-beta2
| | +--- com.squareup.retrofit:retrofit:2.0.0-beta2 ()
| | --- com.google.code.gson:gson:2.3.1 -> 2.4
| --- com.squareup.okhttp:okhttp:2.7.0 ()
+--- com.squareup.picasso:picasso:2.5.2
--- com.github.sembozdemir:BooksApiJavaWrapper:1.0.0
+--- com.squareup.retrofit:converter-gson:2.0.0-beta2 ()
+--- com.squareup.okhttp:okhttp:2.7.0 (_)
+--- com.google.code.gson:gson:2.4
--- com.squareup.retrofit:retrofit:2.0.0-beta2 (*)

_releaseUnitTestApk - ## Internal use, do not manually configure ##
--- junit:junit:4.12
--- org.hamcrest:hamcrest-core:1.3

_releaseUnitTestCompile - ## Internal use, do not manually configure ##
--- junit:junit:4.12
--- org.hamcrest:hamcrest-core:1.3

androidJacocoAgent - The Jacoco agent to use to get coverage data.
Download https://jcenter.bintray.com/org/jacoco/org.jacoco.agent/0.7.4.201502262128/org
.jacoco.agent-0.7.4.201502262128.pom
--- org.jacoco:org.jacoco.agent:0.7.4.201502262128

androidJacocoAnt - The Jacoco ant tasks to use to get execute Gradle tasks.
Download https://jcenter.bintray.com/org/jacoco/org.jacoco.ant/0.7.4.201502262128/org.j
acoco.ant-0.7.4.201502262128.pom
Download https://jcenter.bintray.com/org/jacoco/org.jacoco.report/0.7.4.201502262128/or
g.jacoco.report-0.7.4.201502262128.pom
--- org.jacoco:org.jacoco.ant:0.7.4.201502262128
+--- org.jacoco:org.jacoco.core:0.7.4.201502262128
| --- org.ow2.asm:asm-debug-all:5.0.1
+--- org.jacoco:org.jacoco.report:0.7.4.201502262128
| +--- org.jacoco:org.jacoco.core:0.7.4.201502262128 (*)
| --- org.ow2.asm:asm-debug-all:5.0.1
--- org.jacoco:org.jacoco.agent:0.7.4.201502262128

androidTestApk - Classpath packaged with the compiled 'androidTest' classes.
No dependencies

androidTestCompile - Classpath for compiling the androidTest sources.
No dependencies

androidTestProvided - Classpath for only compiling the androidTest sources.
No dependencies

androidTestWearApp - Link to a wear app to embed for object 'androidTest'.
No dependencies

apk - Classpath packaged with the compiled 'main' classes.
No dependencies

archives - Configuration for archive artifacts.
No dependencies

compile - Classpath for compiling the main sources.
+--- com.android.support:appcompat-v7:23.1.1
| --- com.android.support:support-v4:23.1.1
| --- com.android.support:support-annotations:23.1.1
+--- project :booksapi-lib
| +--- com.google.code.gson:gson:2.4
| +--- com.squareup.retrofit:retrofit:2.0.0-beta2
| | --- com.squareup.okhttp:okhttp:2.5.0 -> 2.7.0
| | --- com.squareup.okio:okio:1.6.0
| +--- com.squareup.retrofit:converter-gson:2.0.0-beta2
| | +--- com.squareup.retrofit:retrofit:2.0.0-beta2 ()
| | --- com.google.code.gson:gson:2.3.1 -> 2.4
| --- com.squareup.okhttp:okhttp:2.7.0 ()
+--- com.squareup.picasso:picasso:2.5.2
--- com.github.sembozdemir:BooksApiJavaWrapper:1.0.0
+--- com.squareup.retrofit:converter-gson:2.0.0-beta2 ()
+--- com.squareup.okhttp:okhttp:2.7.0 ()
+--- com.google.code.gson:gson:2.4
--- com.squareup.retrofit:retrofit:2.0.0-beta2 (*)

debugApk - Classpath packaged with the compiled 'debug' classes.
No dependencies

debugCompile - Classpath for compiling the debug sources.
No dependencies

debugProvided - Classpath for only compiling the debug sources.
No dependencies

debugWearApp - Link to a wear app to embed for object 'debug'.
No dependencies

default - Configuration for default artifacts.
No dependencies

default-mapping - Configuration for default mapping artifacts.
No dependencies

default-metadata - Metadata for the produced APKs.
No dependencies

provided - Classpath for only compiling the main sources.
No dependencies

releaseApk - Classpath packaged with the compiled 'release' classes.
No dependencies

releaseCompile - Classpath for compiling the release sources.
No dependencies

releaseProvided - Classpath for only compiling the release sources.
No dependencies

releaseWearApp - Link to a wear app to embed for object 'release'.
No dependencies

testApk - Classpath packaged with the compiled 'test' classes.
No dependencies

testCompile - Classpath for compiling the test sources.
--- junit:junit:4.12
--- org.hamcrest:hamcrest-core:1.3

testDebugApk - Classpath packaged with the compiled 'testDebug' classes.
No dependencies

testDebugCompile - Classpath for compiling the testDebug sources.
No dependencies

testDebugProvided - Classpath for only compiling the testDebug sources.
No dependencies

testDebugWearApp - Link to a wear app to embed for object 'testDebug'.
No dependencies

testProvided - Classpath for only compiling the test sources.
No dependencies

testReleaseApk - Classpath packaged with the compiled 'testRelease' classes.
No dependencies

testReleaseCompile - Classpath for compiling the testRelease sources.
No dependencies

testReleaseProvided - Classpath for only compiling the testRelease sources.
No dependencies

testReleaseWearApp - Link to a wear app to embed for object 'testRelease'.
No dependencies

testWearApp - Link to a wear app to embed for object 'test'.
No dependencies

wearApp - Link to a wear app to embed for object 'main'.
No dependencies

BUILD SUCCESSFUL

Total time: 37.514 secs
C:\Users\lenovo\AndroidStudioProjects\BooksApi>

[sembozdemir]

if you add gson or okhttp or retrofit library to your app:build.gradle, could you try delete them? because they are already added in BooksApi library.