programming challenge in java-1

Replies

• 

  sushant005

  class a
  {
  int y;//here we have declare y.
  a()
  {
  System.out.println("mohit kumar singh a");
  }
  }
  class b extends a
  {
  b()
  {
  System.out.println("mohit kumar singh b");
  }
  }
  class c extends b
  {
  int x;//you do not the permission to eliminate this
  c()
  {
  x=y;//you do not the permission to eliminate this
  System.out.println("mohit kumar singh c");
  System.out.println("x= "+x);//you do not have permission to eliminate this.
  }
  }
  public class f
  {
  public static void main(String args[])
  {
  c t=new c();
  }
  }

  Mohit am i right.
  Just we have to initialize y inside class a.
• 

  sushant005

  class a
  {
  int y;//here we have declare y.
  a()
  {
  System.out.println("mohit kumar singh a");
  }
  }
  class b extends a
  {
  b()
  {
  System.out.println("mohit kumar singh b");
  }
  }
  class c extends b
  {
  int x;//you do not the permission to eliminate this
  c()
  {
  x=y;//you do not the permission to eliminate this
  System.out.println("mohit kumar singh c");
  System.out.println("x= "+x);//you do not have permission to eliminate this.
  }
  }
  public class f
  {
  public static void main(String args[])
  {
  c t=new c();
  }
  }

  Mohit am i right.
  Just we have to initialize y inside class a.
• 

  Morningdot Hablu

  Oh sorry sus i have done a mistake in my question.
  Check out once again.
• 

  Kaustubh Katdare

  Please always wrap your code inside

  ... [ /code]  tags.

• 

  anandkumarjha

  Hello Mohit
  as far as i know that you only created the object for the class c but didn't use it.so it might be the error.and what sushant told is also right that we should also declare y veriable inside the class A
• 

  Morningdot Hablu

  since c has a constructor: c(int y) you must satisfy that constructor when you extend it. In other words r extends c but c has a constructor that requires an integer therefore r must satisfy this. You could add c() {} in class c to allow for an empty constructor or a better solution is to use super to set the constructor to a default value such as zero when constructing r: r() { super(0); } or if you wanted r(int y) { super(y); } See the Example:
  

  class a
  {
  a()
  {
  System.out.println("mohit kumar singh a");
  }
  }
  class b extends a
  {
  b()
  {
  System.out.println("mohit kumar singh b");
  }
  }
  class c extends b
  {
  int x;
  c(int y)
  {
  x=y;
  System.out.println("mohit kumar singh c");
  System.out.println("x= "+x);
  }
  }
  class r extends c
  {
  r() { super(0); }
  public static void main(String args[])
  {
  c t=new c(4);
  }
  }

• 

  Manish Goyal

  hey mohit you had mentioned that we can make changes in only public class ie f
  but here you are making changes in class c also
• 

  Morningdot Hablu

  @goyal ya you are right.
  
  Oh!! sorry guy's actually i missed int y in constructor.
  Well i try to avoid this type of mistakes in my next java programming challenge.
  So wait for my next challenge.