Core java - Interview Questions and Answers for 'Horizon solutions' - 2 question(s) found - Order By Newest Advanced level question usually asked in High end product companies. Have been asked in Google and Amazon (Based on 1 Feedback)
Q1. Describe, in general, how java's garbage collector works ? Core Java
Anonymous Ans. The Java runtime environment deletes objects when it determines that they are no longer being used. This process is known as garbage collection. The Java runtime environment supports a garbage collector that periodically frees the memory used by objects that are no longer needed. The Java garbage collector is a mark-sweep garbage collector that scans Java dynamic memory areas for objects, marking those that are referenced. After all possible paths to objects are investigated, those objects that are not marked (i.e. are not referenced) are known to be garbage and are collected. Help us improve. Please let us know the company, where you were asked this question : VIDEO Like Discuss Correct / Improve  java   garbage collection   java memory management   advanced Asked in 21 Companies intermediate   frequent Try 4 Question(s) Test Related Questions Does garbage collection guarantee that a program will not run out of memory? Why Char array is preferred over String for storing password? Let's suppose we have an to destroy objects, Design a program to implement garbage collection ? What are strong, soft, weak and phantom references in Java ? Should we override finalize method ? Can we call the garbage collector explicitly ? What does String intern() method do? Java doesn't provide exclusive access to memory like C/C++ and other lower level languages ? What are the advantanges and disadvantages ? What is a finalize method ?
Q2. How can you extract integers from string values and add (sum it up) all the extracted integers? e.g "James34long4island322in3rdAvenue" ---> 34 4 322 3 = 363 Core Java 2017-05-01 09:30:15 This question was recently asked at 'Horizon Solutions'.This question is still unanswered. Can you please provide an answer. Help us improve. Please let us know the company, where you were asked this question : Like Discuss Correct / Improve  coding  code Asked in 1 Companies Related Questions What are the steps to be performed while coding Junit with Mocking framework ? What is a Sequence File? What different level of logging you use while coding ? Have you ever encoded the response before sending it back from the service? If Yes , Which encoding was used ? What are the different type of encoding you have used ? How does encoding affect using Reader / writer classes or Stream classes in Java ? What is the difference between html encoding and url encoding ? Does spaces get's encoded in html encoding ?