android是否适用于JRE 7？

Question

Does Android work with JRE 7? I can't find any documentation on it..

Answer 1

Android does not use the JRE... it uses its own runtime optimized for mobile applications, the Dalvik VM. however, it has most of the features of the JRE.

Answer 2

Android runtime is Dalvik, but I think the question is if you can use java libraries (.jar) compiled with Java 7 (for example if you use the new try with resources clause in your source code, will it works on Android app?).

In that case I have seen that you could use with Gradles: http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Using-sourceCompatibility-1.7

... which says:

With Android KitKat (buildToolsVersion 19) you can use the diamond operator, multi-catch, strings in switches, try with resources, etc. To do this, add the following to your build file: *

android {
    compileSdkVersion 19
    buildToolsVersion "19.0.0"

    defaultConfig {
        minSdkVersion 7
        targetSdkVersion 19
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }
}

Checking the Android API I see that is not fully compliant, the ForkJoinPool in the Android API doesn't exist but the Autoclosable does it (which is used in try with resources) but from api 19.

Answer 3

Android使用Dalvik虚拟机。