isJavaObject
Check if an object can be implicitly converted to an instance of the given Java class.
is = isJavaObject(a,javaclass)
Inputs
a Any object
javaclass A Java class.
Outputs
is true if a can be converted to an instance of the specified Java class.


Example
>>isJavaObject(2,Integer)
   1
>>isJavaObject(2,Double)
   1
>>isJavaObject(2,"java.util.Vector")
   0