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Upinstance variable, Java variable

Java instance variable comparison table
Subject implement has definition have be access by declare by is a subtopic of is a synonym of is a kind of declared
instance variablean attribute or associationA data item present in all the instances of a class, normally used to implement associations and attributescomment if it is non-obviousas private as reasonably possible - almost never make them public  2.3 - Instance Variablesfieldvariable 
Java variable  an interface as its type which means that, with the variable, you can invoke any operation supported by the interfaceas private as possibleother variables and methods in any class in the same package by defaultgiving the data type followed by the name of the variableThe Basics of Java variable 
Java instance variablean attribute or association an interface as its type which means that, with the variable, you can invoke any operation supported by the interfaceas private as reasonably possible - almost never make them publicother variables and methods in any class in the same package by defaultgiving the data type followed by the name of the variableThe Basics of Java Java variableprivate

Upinstance variable, Java variable