basic java code to understand inheritance -


why system.out.println(b.h + " " + b.geth()); prints following:

beta 44 <br/> 4 44          (notice in second line)

i expecting print this:

4 beta 44 44   (this 1 in 1 line)

the reason why thought print way because call b.h first 4.then call b.geth() print beta 44 44

here code:

class baap{          int h = 4;         public int geth(){                 system.out.println("beta " + h);                 return h;         } }  class beta extends baap{         int h = 44;         public int geth(){                 system.out.println("beta " + h);                 return h;         }          public static void main (string [] args) {                 baap b = new beta();                 system.out.println(b.h + " " + b.geth());         }  }

first, call geth() prints "beta 44", since argument of system.out.println(b.h + " " + b.geth()) evaluated before println called.

then system.out.println(b.h + " " + b.geth()) prints "4 44".

b.h returns 4 because there no overriding instance variables, , since b's compile time type baap, b.h returns instance variable of super class.

b.geth() returns 44 because b's runtime type beta, overrides geth().


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