Android Gradle: What is javaMaxHeapSize “4g”?

Question

In an android project, build.gradle file, I have been through this line

dexOptions{
    javaMaxHeapSize \"4g\"
}

Answer 1

dexOptions{
    javaMaxHeapSize "4g"
}

after writing this in build.gradle go to gradle.propertiesand enable this line:

org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8