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Interview Questions and Answers for 'Close' - 3 question(s) found - Order By Newest | ||||
Very frequently asked. Among first few questions in almost all interviews. Among Top 5 frequently asked questions. Frequently asked in Indian service companies (HCL,TCS,Infosys,Capgemini etc based on multiple feedback ) and Epam Systems | ||||
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Ans. "equals" is the method of object class which is supposed to be overridden to check object equality, whereas "==" operator evaluate to see if the object handlers on the left and right are pointing to the same object in memory. x.equals(y) means the references x and y are holding objects that are equal. x==y means that the references x and y have same object. Sample code: String x = new String("str"); String y = new String("str"); System.out.println(x == y); // prints false System.out.println(x.equals(y)); // prints true | ||||
Sample Code for equals | ||||
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Like Discuss Correct / Improve  java   string comparison   string   object class   ==   equals   object equality  operator   == vs equals   equals vs == Asked in 294 Companies basic   frequent | ||||
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What is the difference between = and == in Java ? | ||||
How is == operator different for objects and primitive types ? | ||||
What will be the output of following code Integer x = 1; Integer y = 2; System.out.println(x == y); What if you change 1 to "1" and Integer to String? | ||||
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Ans. BufferedWriter is temporary source for data storage.BufferedWriter is used to write character data to the file.Flush() is method available in B.W which ensures that all data items are written to file including last character.Close() is used to closes the character output stream. | ||||
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Like Discuss Correct / Improve  java   java io   input output   file handling   file io   output stream   bufferedwriter   flush   close | ||||
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How and when the Buffer is cleared when using Buffered Writer Classes ? | ||||
Difference between save and flush in Hibernate ? | ||||
Have you ever faced any problem because of PrintWriter buffer and autoflush mechanism ? How did you got rid of it ? | ||||
Can we disable auto flushing for PrintWriter ? | ||||
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Ans. A Closeable is an interface which is a source or destination of data that can be closed. | ||||
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Like Discuss Correct / Improve  closeable   interfaces intermediate   rare | ||||
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