任务执行失败：app：compileDebugJavaWithJavac

Error:Execution Failed for task ‘:app:compileDebugJavaWithJavac’.

Compilation Failed; see the compiler error output for details.

这是我的build.gradle

apply plugin: 'com.android.application'

android {
compileSdkVersion 23
buildToolsversion "23.0.2"
defaultConfig {
    applicationId 'ca.gggolf.aminutegolf'
    minSdkVersion 19
    targetSdkVersion 23
    versionCode 1
    versionName "1.0"
}

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
    }
}
productFlavors {
}
}

dependencies {
compile filetree(include: ['*.jar'],dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
}

我不知道该怎么办..一切顺利,应用程序在几年前工作,当它是第一次做.

谢谢