what is the purpose of protected variable and method in java -


this question has answer here:

i new java, please tell me - "what purpose of protected variable , method in java".

thanks in advance.
jp.

take @ docs
following table shows access members permitted each modifier.

access levels

modifier    class  package  subclass  world public      y      y        y         y protected   y      y        y         n no modifier y      y        n         n private     y      n        n         n

so, protected elements in java application accessible form subclasses, class , classes in same package!, knowing this, should use protected when methods or attributes of 1 class needs shared around.

  • if don't want leaking of internal state, declaring member variables private way go.
  • if don't care subclasses can access internal state, protected enough.

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