How can be define MARKER interfce in java

1 Answers  

---

What is the super void?

0 Answers  

---

If circular link of two objects, then will it be garbage collected ?

3 Answers   TCS,

---

is it possible to add a object in a HASHMAP

6 Answers   HCL,

---

What is string array?

0 Answers  

---

Say you want to store the information about a number of pets in an array. Typical information that you could store for each pet (where relevant) would be • Breed of animal • Animal's name • Its birth date • Its sex • Whether it has been sterilised or not • When it is due for its next inoculation • When it last had its wings clipped For each type of pet (eg. dog, cat or bird) you would typically define a class to hold the relevant data. Note: You do not need to implement these classes. Just answer the following questions. 3.1.1 What would be the advantage of creating a superclass (eg. Pet) and declaring an array of Pet objects over simply using an array of Objects, storing each of the instances of the different pet classes (eg. Dog, Cat or Bird) in it? 3.1.2 Would you define Pet as a class or as an interface? Why? (2) (2)

0 Answers  

---

design an lru cache in java?

0 Answers  

---

What are the different types of sorting in java?

0 Answers  

---

Can we override private constructor in java?

0 Answers  

---

What are Interceptors?

1 Answers  

---

What is aggregation?

1 Answers   Cap Gemini,

---

I have a string like _a01_a02_a03_ and another string like _2_1.5_4_ as input.I want to extract a01,a02... to a string array and 2,1.5,etc to a double array with a01 corresponds to 2 and a02 to 1.5 etc. Need code in core java.. Can you do it?

1 Answers   Cognizant,

---