what is the main usage of an abstract keyword?please follow the program class A { void display() { System.out.println("hai"); } void print() { } } class B extends A { void print() { System.out.println("Hello"); } } In this program i was gives the implementation of print() according to my requirements in subclass.And there is no definition in superclass then why we can use abstract keyword before a method that i want to gives definition in other classes,is any mistakes in the above usage of method?

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Info for guidewire documents and interview questions

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write a program for finding the union of two integer array in java?

2 Answers  

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Even if all fields are initialized also in a program, I am getting COBOL/400 decimal data error .why is it coming?

1 Answers   Freelance,

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what are the differences between CONS, LIST, and APPEND

0 Answers   Comtech,

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A, B and C are 8 bit nos. They are as follows: A 1 1 0 1 1 0 1 1 B 0 1 1 1 1 0 1 0 C 0 1 1 0 1 1 0 1 Find ( (A-B) u C )=? how to solve this need with steps

5 Answers   TCS,

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what is the draw back of Power builder

0 Answers   IBM,

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what is database?how to tell 3years boy or girl by using toys?

1 Answers  

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Q2. A memory location has physical address D5687h. Compute: a. The offset address if the segment number is D445h. b. The segment number if the offset address is B577h.

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what is best way to create a Thread class & why?

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is possible to delete specific data in a row by using of sql query?

0 Answers   HCL,

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A good website has the following conditions It should be interactive. It should contain at least 20 images. Title cannot be null and should contain at least 10 letters other than spaces and hyphen (-). The keywords should contain atleast three among the following list : "design", "Graphics", "lovely", "beautiful", "amazing" and "mesmerising" Write a method: boolean isGoodWebsite(boolean isInteractive, int numOfImages, String title,String keywords[]) isInteractive whether the site is interactive or not numOfImages Number of images on the website title Title of the website keywords Array of keywords in the website.

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