Java doesn't support multiple inheritance.
Java uses primitive data types and hence is not a pure object oriented language.
In Java, Arrays are objects.
Path and Classpath are operating system level environment variales. Path is used define where the system can find the executables(.exe) files and classpath is used to specify the location .class files.
Local varaiables are those which are declared within a block of code like methods. Local variables should be initialised before accessing them.