Error with java.nio.file.Paths

[ariel-lenis]

Hi,
I tried to create a simple application using nitrite:

• Updated gradle

• Created sample project with a simple db creation code

And after run the aplication i got this:

05-30 01:45:39.096 27695-27702/? E/art: Failed sending reply to debugger: Broken pipe
05-30 01:45:39.193 27695-27695/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.newtype.nitritetest, PID: 27695
java.lang.NoClassDefFoundError: Failed resolution of: Ljava/nio/file/Paths;
at org.dizitart.no2.NitriteBuilder.openOrCreateInternal(NitriteBuilder.java:387)
at org.dizitart.no2.NitriteBuilder.openOrCreate(NitriteBuilder.java:338)
at com.example.newtype.nitritetest.MainActivity.startDatabase(MainActivity.java:26)
at com.example.newtype.nitritetest.MainActivity.onCreate(MainActivity.java:18)
at android.app.Activity.performCreate(Activity.java:6705)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2664)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2772)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1515)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:241)
at android.app.ActivityThread.main(ActivityThread.java:6217)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: java.lang.ClassNotFoundException: Didn't find class "java.nio.file.Paths" on path: DexPathList[[zip file "/data/app/com.example.newtype.nitritetest-2/base.apk"],nativeLibraryDirectories=[/data/app/com.example.newtype.nitritetest-2/lib/arm64, /system/lib64, /vendor/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:380)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at org.dizitart.no2.NitriteBuilder.openOrCreateInternal(NitriteBuilder.java:387) 
at org.dizitart.no2.NitriteBuilder.openOrCreate(NitriteBuilder.java:338) 
at com.example.newtype.nitritetest.MainActivity.startDatabase(MainActivity.java:26) 
at com.example.newtype.nitritetest.MainActivity.onCreate(MainActivity.java:18) 
at android.app.Activity.performCreate(Activity.java:6705) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2664) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2772) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1515) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:241) 
at android.app.ActivityThread.main(ActivityThread.java:6217) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755) 

[anidotnet]

Probably you are targeting JDK 1.6, instead you should try with JDK 1.7 and use the latest android sdk. Can you please try this and let me know?

[ariel-lenis]

Thanks to reply.

To use the JDK 1.7 version i added this section to the gradle file (thats what you mean?):

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_7
    targetCompatibility JavaVersion.VERSION_1_7
}

This is the build.gradle file:

apply plugin: 'com.android.application'

android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.example.newtype.nitritetest"
minSdkVersion 22
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
packagingOptions {
exclude 'META-INF/ASL2.0'
exclude 'META-INF/LICENSE'
exclude 'META-INF/NOTICE'
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_7
targetCompatibility JavaVersion.VERSION_1_7
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'org.dizitart:nitrite:1.0'
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
}

[anidotnet]

Not only that, in your Android studio set the Java SDK location to JDK 1.7 or above (1.8) installation. File->Project Structure->SDK location -> JDK location

[anidotnet]

If it is resolved please do inform me so that I can close the issue.

[ariel-lenis]

I changed the jdk version to 1.8 (android studio says 1.8 as minimum) but the problem was not fixed.

I used this code:

    String appPath = this.getApplication().getApplicationContext().getFilesDir().getAbsolutePath();        

    Nitrite db = Nitrite.builder()
            .compressed()
            .filePath(appPath + "/test.db")
            .openOrCreate("user", "password");

And it works now (without specifying the jdk version, just the default configuration)!!!

It was my bad, i was using the quick example code:

Nitrite db = Nitrite.builder()
.compressed()
.filePath("/tmp/test.db")
.openOrCreate("user", "password");

Looks like a problem with the folder "/tmp" from the examples because the folder does not exists.

[anidotnet]

Glad to hear it is resolved. Yes you are right, quick example code actually is for *nix systems. I am closing the defect now.